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196 results on '"Gerald Badurek"'

51. Identification of nonclassical states in neutron spin precession experiments

Author: Helmut Rauch, M. Suda, Gerald Badurek, and Harald Weinfurter
Subjects: Physics, Larmor precession, Condensed matter physics, business.industry, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Neutron spin echo, Superposition principle, Formalism (philosophy of mathematics), Optics, Quantum mechanics, Wigner distribution function, Condensed Matter::Strongly Correlated Electrons, Neutron, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business
Abstract: Highly non-classical states are produced in polarized neutron spin precession experiments due to the coherent superposition of spin-up and spin-down states. These states are described within the Wigner function formalism and the measured momentum modulation in a neutron spin precession experiment is taken as a sign of such non-classical states.
Published: 2000
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52. Neutron polarimetric separation of geometric and dynamical phases

Author: Apoorva G. Wagh, Gerald Badurek, A Schricker, R.J Buchelt, and Veer Chand Rakhecha
Subjects: Physics, Condensed matter physics, Geometric phase, Relative rotation, Polarimetry, Phase (waves), General Physics and Astronomy, Neutron, Translation (geometry), Computational physics, Spin-½
Abstract: We present a neutron polarimetric experiment clearly demarcating geometric and dynamical phases. Here a relative rotation between two identical π spin flippers produces a pure geometric phase and their relative translation yields a pure dynamical phase. The experiment agrees with theory to within about 1%.
Published: 2000
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53. Wave–particle duality and quantum erasure in polarized–neutron interferometry

Author: Helmut Rauch, Berthold-Georg Englert, Gerald Badurek, and R.J. Buchelt
Subjects: Physics, Nuclear and High Energy Physics, Interferometry, Photon, Wave–particle duality, Quantum mechanics, Erasure, Neutron, Fermion, Interference (wave propagation), Instrumentation, Quantum, Computer Science::Information Theory
Abstract: An interference experiment with polarized neutrons is proposed to check the duality relation between the fringe visibility and the which-way information for massive fermions with macroscopic spatial separation of the interfering sub-beams. The connection between polarization-sensitive post-selection of sub-ensembles and the concept of quantum erasure is discussed. This neutron experiment will supplement those recently performed with photons and atoms.
Published: 2000
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54. Basic features of the upgraded S18 neutron interferometer set-up at ILL

Author: A Schricker, G. Bruckner, G. Kroupa, M. Hainbuchner, O. Bolik, M. Zawisky, Gerald Badurek, R.J. Buchelt, and Helmut Rauch
Subjects: Physics, Nuclear and High Energy Physics, business.industry, Interference (wave propagation), Neutron time-of-flight scattering, law.invention, Interferometry, Optics, Perfect crystal, law, Astronomical interferometer, Prism, business, Instrumentation, Neutron interferometer, Monochromator
Abstract: The perfect crystal interferometer instrument S18 at the Institute Laue-Langevin (ILL) in Grenoble has been upgraded to allow more advanced neutron optics experiments for fundamental, nuclear and condensed matter physics. The new supermirror guide together with the multipurpose monochromator provides considerably higher intensities in a wide wavelength region. The optimal use of neutrons is obtained by a nondispersive arrangement of the monochromator and the interferometer crystals. This also allows to obtain completely polarised beams using permanent magnetic prism deflection. An additional third analyzer axis permits novel postselection experiments concerning momentum distribution and polarisation analysis of the interfering beams. Several types of large perfect crystal interferometers are available for different applications. The system can be configured as an advanced high-resolution Bonse–Hart small angle scattering camera. The results of various test measurements concerning intensities, interference contrast, long-term stability, the accessible wavelength range and the basic features as a SANS camera will be presented. Various proposals for experiments will be discussed as well.
Published: 2000
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55. Noncommuting spinor rotation due to balanced geometrical and dynamical phases

Author: Gerald Badurek and Yuji Hasegawa
Subjects: Physics, Spinor, Classical mechanics, Rotation, Atomic and Molecular Physics, and Optics
Published: 1999
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56. Domain structure dynamics of amorphous Fe64Co21B15 and Co77B23 ribbons studied by three-dimensional neutron depolarization

Author: J.P. Sinnecker, Gerald Badurek, S. Menhart, P. Riedler, R. Grössinger, and R. Sato Turtelli
Subjects: Magnetic anisotropy, Materials science, Condensed matter physics, Ferromagnetism, Annealing (metallurgy), Thermodynamic equilibrium, General Physics and Astronomy, Neutron, Depolarization, Amorphous solid, Electromagnetic induction
Abstract: Relaxation phenomena related to domain structure dynamics in amorphous ferromagnetic Fe64Co21B15, and Co77B23 samples were studied by time-resolved three-dimensional neutron depolarization and a conventional magnetic induction technique. Different initial domain structures were induced either by applying external stresses or by stress annealing. A theoretical model was developed to describe the observed time dependence of neutron depolarization upon passage through such samples. It is shown that the domain structure approaches the equilibrium state with stable domain wall positions at a rate that depends essentially both on the sample composition and on the induced magnetic anisotropy.
Published: 1999
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57. Quantum mechanical aspects of dynamical neutron polarization

Author: T. Betz, Gerald Badurek, and E. Jericha
Subjects: Physics, Rotating magnetic field, Spin states, Spin polarization, Condensed matter physics, Field strength, Condensed Matter Physics, Polarization (waves), Electronic, Optical and Magnetic Materials, Computational physics, Magnetic field, Neutron, Electrical and Electronic Engineering, Wave function
Abstract: Dynamic Neutron Polarization (DNP) is a concept which allows to achieve complete polarization of slow neutrons, virtually without any loss of intensity. There the neutrons pass through a combination of a static and a rotating magnetic field in resonance, like in a standard NMR apparatus. Depending on their initial spin state, they end up with different kinetic energies and therefore different velocity. In a succeeding magnetic precession field this distinction causes a different total precession angle. Tuning the field strength can lead to a final state where two original anti-parallel spin states are aligned parallel and hence to polarization. The goal of this work is to describe the quantum mechanical aspects of DNP and to work out the differences to the semi-classical treatment. We show by quantum mechanical means, that the concept works and DNP is feasible, indeed. Therefore, we have to take a closer look to the behavior of neutron wave functions in magnetic fields. In the first Section we consider a monochromatic continuous beam. The more realistic case of a pulsed, polychromatic beam requires a time-dependent field configuration and will be treated in the second Section. In particular the spatial separation of the spin up- and down-states is considered, because it causes an effect of polarization damping so that one cannot achieve a fully polarized final state. This effect is not predicted by the semi-classical treatment of DNP. However, this reduction of polarization is very small and can be neglected in realistic DNP-setups.
Published: 2007
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58. Generalized magnetic field setup for dynamical neutron polarization

Author: Gerald Badurek, E. Jericha, and Ch. Hartl
Subjects: Physics, Spin polarization, Spins, Condensed matter physics, Zero field splitting, Condensed Matter Physics, Polarization (waves), Electronic, Optical and Magnetic Materials, Magnetic field, Formalism (philosophy of mathematics), Quantum electrodynamics, Neutron, Electrical and Electronic Engineering, Dynamic method
Abstract: In the dynamical neutron polarization (DNP) concept there are mainly two magnetic fields which are used for the energy splitting and the subsequent L armor rotation of the spins, resulting in the alignment of the polarization vector for two partial ensembles with initially opposite spin directions. We present a new approach to the DNP field setup problem, based upon a semi-classical spin rotation formalism, which reveals a manifold of possible field time dependencies for the case of pulsed polychromatic beams and includes and extends the hitherto known solutions. The non-unique relation between the energy splitting and the spin precession field and their “effective” counterparts is discussed.
Published: 2007
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59. Reconstruction techniques for tensorial neutron tomography

Author: R. Szeywerth, E. Jericha, Gerald Badurek, and H. Leeb
Subjects: Physics, Algebraic Reconstruction Technique, Tomographic reconstruction, Magnetic structure, Magnetic domain, business.industry, Neutron tomography, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Optics, Neutron, Tomography, Electrical and Electronic Engineering, business, Neutron interferometer
Abstract: The development of techniques to determine the magnetic structure of ferromagnetic materials is still an issue for basic research. We present in this contribution methods for tomographic reconstruction of magnetic domains in bulk material by means of polarized neutrons. The effect of magnetic fields on the neutron wave function while traversing a ferromagnetic sample is described by means of path ordered integrals. Such integrals may be determined experimentally in neutron depolarization or neutron interferometer measurements. Application of inverse Radon transformation used in standard tomography does not yield acceptable results for large rotation angles of the neutron polarization vector, due to path-ordering effects. Recently we have developed algorithms which take these effects specifically into account. The best reconstruction results were so far obtained by a modified algebraic reconstruction technique. We present the quality of reconstruction results for a simulated ferromagnetic test sample. These methods are particularly attractive since they result in a direct 3D visualization of the spatial magnetization distribution in bulk material.
Published: 2007
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60. Loss-free neutron polarization

Author: Ch. Hartl, Gerald Badurek, and E. Jericha
Subjects: Nuclear physics, Physics, Formalism (philosophy of mathematics), Monte Carlo method, Thermal, Neutron source, Neutron, Electrical and Electronic Engineering, Condensed Matter Physics, Polarization (waves), Electronic, Optical and Magnetic Materials, Computational physics
Abstract: ‘Dynamical Neutron Polarization’ contrary to all other known techniques offers the possibility to polarize a beam of thermal or cold neutrons without loosing, at least in principle, any of the incident particles. The basic theoretical concept of this unique method based upon spin rotation formalism is presented. Taking into account various technical details and aspects, we have checked its actual feasibility by extensive Monte Carlo simulations under conditions as close to reality as possible.
Published: 2007
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61. Ultra-small-angle scattering with polarized neutrons

Author: E. Jericha, Gerald Badurek, and M. Trinker
Subjects: Physics, Scattering, business.industry, Neutron scattering, Condensed Matter Physics, Small-angle neutron scattering, Neutron time-of-flight scattering, Electronic, Optical and Magnetic Materials, Optics, Neutron, Electrical and Electronic Engineering, Small-angle scattering, business, Neutron interferometer, Diffractometer
Abstract: Ultra-small-angle neutron scattering (USANS) has been established as an effective technique for the study of structures in the micrometre range in recent years. Consequentially this method has been extended to magnetic structures of corresponding size. We present the instrument arrangement and first experimental results. The instrument itself is a double crystal diffractometer in Bonse–Hart configuration which takes advantage of the narrow angular width of the perfect crystal reflection to obtain an extremely high angular resolution of the scattering vector. The neutrons are loss-free polarized by permanent magnetic prisms located between the monochromator crystal and the sample. Neutrons with opposite polarization are separated to a large extent and their different scattering behaviour may be studied in a single measurement without additional manipulation of the neutron spin. In this manner we are able to separate the magnetic and nuclear contribution to the scattering. We present first exemplifying measurements on ferromagnetic rods and wires, and on soft-magnetic ribbons. Related experiments were performed at the USANS facility of the TRIGA reactor at the Vienna University of Technology and at the combined neutron interferometer/USANS instrument S18 at the ILL, Grenoble.
Published: 2007
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62. Noncommutation of Pauli spin operators in neutron polarimetry

Author: Yuji Hasegawa, Gerald Badurek, R. Meixner, and S. Menhart
Subjects: Physics, Spin polarization, Spin states, General Physics and Astronomy, Fermion, Mathematical Operators, symbols.namesake, Pauli exclusion principle, Quantum mechanics, symbols, Condensed Matter::Strongly Correlated Electrons, Neutron, Angular momentum operator, Nucleon
Abstract: A neutron spin polarimetric experiment is described which explicitly demonstrates the noncommutation properties of Pauli spin operators. Commutation of the sequential order of two successive π spin rotators leads to different final polarization states of the transmitted neutron beam. An interpretation of the observations is also given in terms of interference between two mutually orthogonal spin states that undergo different phase shifts upon the commutation of spin rotators.
Published: 1997
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63. Violation of Heisenberg's error-disturbance uncertainty relation in neutron spin measurements

Author: Jacqueline Erhart, Stephan Sponar, Georg Sulyok, Gerald Badurek, Masanao Ozawa, and Yuji Hasegawa
Subjects: Physics, Quantum Physics, Disturbance (geology), Uncertainty principle, Relation (database), Heuristic, Mathematical analysis, FOS: Physical sciences, Atomic and Molecular Physics, and Optics, Quantum mechanics, Configuration space, Quantum information, Quantum Physics (quant-ph), Reciprocal, Spin-½
Abstract: In its original formulation, Heisenberg's uncertainty principle dealt with the relationship between the error of a quantum measurement and the thereby induced disturbance on the measured object. Meanwhile, Heisenberg's heuristic arguments have turned out to be correct only for special cases. A new universally valid relation was derived by Ozawa in 2003. Here, we demonstrate that Ozawa's predictions hold for projective neutron-spin measurements. The experimental inaccessibility of error and disturbance claimed elsewhere has been overcome using a tomographic method. By a systematic variation of experimental parameters in the entire configuration space, the physical behavior of error and disturbance for projective spin-1/2 measurements is illustrated comprehensively. The violation of Heisenberg's original relation, as well as, the validity of Ozawa's relation become manifest. In addition, our results conclude that the widespread assumption of a reciprocal relation between error and disturbance is not valid in general., 17 pages, 13 figures
Published: 2013

64. THE Am-243 NEUTRON CAPTURE MEASUREMENT AT THE n_TOF FACILITY

Author: F. Gramegna, N. Colonna, Marco T. Pigni, A. Pavlik, G. Vannini, K. Fujii, L. Tavora, M. Rosetti, Fabio Belloni, A. Plukis, L. Perrot, I. Savvidis, F. Käppeler, P. Rullhusen, S. David, Manuel Lozano, D. Cano-Ott, C. Eleftheriadis, V. Chepel, F. Voss, G. Tagliente, A. Ventura, G. Rudolf, M. Dahlfors, F. Becvar, E. Mendoza, A. Lindote, F. Calviño, Thomas Rauscher, E. Jericha, P. Vaz, H. Leeb, I. Duran, G. Cortes, P. Baumann, C. Domingo Pardo, A. Herrera-Martinez, P. Cennini, Isabel Lopes, D. Karadimos, L. Marques, Aaron Couture, J. Salgado, R. Vlastou, A. Poch, E. Berthoumieux, J. Marganiec, E. González-Romero, L. Sarchiapone, Vasilis Vlachoudis, C. Pretel, A. Mengoni, A. Ferrari, K. Wisshak, M. Meaze, Roberto Capote, P.A. Assimakopoulos, R. C. Haight, A. Goverdovski, M. Mosconi, Costas G. Papadopoulos, B. Haas, V. Ketlerov, C. Paradela, L. Audouin, S. O'Brien, F. Alvarez-Velarde, L. Ferrant, D. Karamanis, N. Patronis, M. Oshima, Matthias Heil, J. Pancin, R. Terlizzi, J. Andrzejewski, Michael Wiescher, W.I. Furman, H. Wendler, S. Isaev, Masayuki Igashira, S. Lukic, Gerald Badurek, C. Stephan, F. Gunsing, W. Dridi, F. Neves, Y. Kadi, Rene Reifarth, H. Frais-Koelbl, Cristian Massimi, P. M. Milazzo, V. Konovalov, I. Dillman, J. M. Quesada, L. Tassan-Got, R. Dolfini, Marco Calviani, C. A. Papachristodoulou, D. Villamarin, A. Carrillo de Albornoz, E. Griesmayer, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, P. Pavlopoulos, S. Walter, P. E. Koehler, Ralf Plag, A. García-Rios, C. Rubbia, G. Aerts, Isabel S. Gonçalves, S. Marrone, M. Kerveno, Corrie S. Moreau, A. J. M. Plompen, James L. Cox, M. Krtička, R. Ferreira-Marques, T. Martinez, H. Álvarez, J. L. Tain, E. Kossionides, Javier Praena, S. Andriamonje, E. Chiaveri, P. F. Mastinu, and C. Lampoudis
Subjects: Nuclear physics, Neutron capture, Materials science
Published: 2013
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65. The93Zr(n,γ) reaction up to 8 keV neutron energy

Author: L. Perrot, M. Dahlfors, E. Jericha, P. Vaz, Aaron Couture, S. Walter, A. Herrera-Martinez, N. Patronis, Ralf Plag, H. Álvarez, S. David, C. Lamboudis, J. L. Tain, W.I. Furman, Arnaud Ferrari, L. Tavora, C. A. Papachristodoulou, M. Rosetti, G. Tagliente, D. Karamanis, I. Dillmann, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, K. Wisshak, E. Kossionides, A. Ventura, F. Käppeler, Corrie S. Moreau, C. Eleftheriadis, Javier Praena, M. Kerveno, J. Andrzejewski, G. Vannini, Marco Calviani, B. Haas, V. Chepel, G. Rudolf, P. Rullhusen, A. Plukis, J. Salgado, G. Aerts, A. Poch, C. Santos, D. Karadimos, F. Neves, P. M. Milazzo, P. Baumann, C. Carrapiço, D. Villamarin, F. Gunsing, E. González-Romero, A. Pavlik, A. Mengoni, C. Pretel, W. Dridi, M. Krtička, F. Calviño, Rene Reifarth, Cristian Massimi, F. Bečvář, C. Domingo-Pardo, L. Sarchiapone, R. Ferreira-Marques, T. Martinez, A. J. M. Plompen, J. M. Quesada, F. Voss, P. Cennini, Marco T. Pigni, Matthias Heil, I. Duran, J. Marganiec, S. Andriamonje, L. Tassan-Got, G. Cortes, P. Pavlopoulos, E. Chiaveri, M. Embid-Segura, F. Alvarez-Velarde, H. Leeb, I. Savvidis, M. Mosconi, P. F. Mastinu, Y. Kadi, S. O'Brien, Gerald Badurek, R. C. Haight, D. Cano-Ott, R. Terlizzi, Roberto Capote, C. Paradela, L. Audouin, Nicola Colonna, K. Fujii, Vasilis Vlachoudis, R. Vlastou, E. Berthoumieux, Fabio Belloni, M. C. Vincente, Christoph A. Stephan, S. Lukic, A. Lindote, F. Gramegna, Isabel Lopes, Michael Wiescher, C. T. Papadopoulos, C. Rubbia, Isabel S. Gonçalves, and S. Marrone
Subjects: Physics, Nuclear and High Energy Physics, Radionuclide, Range (particle radiation), Nuclear transmutation, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Resonance, 7. Clean energy, 01 natural sciences, Neutron temperature, Nuclear physics, Time of flight, 13. Climate action, Nucleosynthesis, 0103 physical sciences, Physics::Accelerator Physics, Atomic physics, Nuclear Experiment, s-process, 010303 astronomy & astrophysics
Abstract: The (n,γ) reaction of the radioactive isotope 93Zr has been measured at the n-TOF high-resolution time-of-flight facility at CERN. Resonance parameters have been extracted in the neutron energy range up to 8 keV, yielding capture widths smaller (14%) than reported in an earlier experiment. These results are important for detailed nucleosynthesis calculations and for refined studies of waste transmutation concepts. © 2013 American Physical Society.
Published: 2013
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66. A new CVD diamond mosaic-detector for (n, α) cross-section measurements at the n_TOF experiment at CERN

Author: F. Bečvář, T. J. Wright, F. Cerutti, Mario Weigand, E. Gonzalez-Romero, Rene Reifarth, J. L. Tain, C. Lampoudis, C. Lederer, N. Kivel, Stefan Schmidt, M. Meaze, J. M. Quesada, F. Gunsing, J. Billowes, Jeri Kroll, P. Vaz, Srinivasan Ganesan, P. Gurusamy, K. Fraval, Cristian Massimi, Alberto Ventura, M. B. Gómez-Hornillos, E. Mendoza, C. Paradela, Javier Praena, R. Sarmento, Mario Barbagallo, E. Berthoumieux, M. S. Robles, A. Riego, M. Krtička, F. Calviño, M. A. Cortés-Giraldo, M. Mirea, G. Tagliente, Peter Schillebeeckx, N. Dzysiuk, Carlos Guerrero, A. Pavlik, T. Martinez, L. Audouin, Petar Žugec, Alfredo Ferrari, C. Domingo-Pardo, Roberto Losito, V. Variale, I. Duran, H. Leeb, M. Sabaté-Gilarte, M. Mastromarco, F. Käppeler, M. Diakaki, J. Perkowski, A. K. Saxena, P. M. Milazzo, J. Marganiec, A. Mallick, G. Vannini, Gerald Badurek, V. Boccone, S. Altstadt, A. Hernández-Prieto, A. J. M. Plompen, P. F. Mastinu, A. Manousos, C. Eleftheriadis, E. Jericha, G. Giubrone, E. Chiaveri, D. Cano-Ott, Alberto Mengoni, V. Bécares, Dorothea Schumann, Yacine Kadi, Rugard Dressler, C. Weiß, R. Versaci, P. E. Koehler, F. Mingrone, J. Andrzejewski, A. Tsinganis, G. Cortes, M. Kokkoris, D. Tarrío, Carlo Rubbia, Nicola Colonna, L.S. Leong, C. Langer, V. Vlachoudis, E. Griesmayer, T. Ware, C. Carrapiço, Anton Wallner, D. G. Jenkins, Laurent Tassan-Got, W. Mondalaers, Fabio Belloni, M. P. W. Chin, F. Roman, E. Leal-Cidoncha, I. Goncalves, Thomas Rauscher, M. J. Vermeulen, D. Karadimos, S. Valenta, A. R. García, M. Brugger, Marco Calviani, R. Vlastou, Damir Bosnar, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, TOF, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Ventura, A., Mengoni, A., C. Wei, E. Griesmayer, C. Guerrero, S. Altstadt, J. Andrzejewski, L. Audouin, G. Badurek, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, M. Calyiani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, N. Colonna, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, F. Gunsing, P. Gurusamy, A. Hernandez-Prieto, D. G. Jenkin, E. Jericha, Y. Kadi, F. Kappeler, D. Karadimo, N. Kivel, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Lampoudi, C. Langer, E. Leal-Cidoncha, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Mallick, A. Manouso, J. Marganiec, T. Martinez, C. Massimi, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, M. S. Roble, F. Roman, C. Rubbia, M. Sabate-Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan-Got, A. Tsingani, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudi, R. Vlastou, A. Wallner, T. Ware, M. Weigand, T. Wright, and P. Zugec
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Energies [Àrees temàtiques de la UPC], Analytical chemistry, Chemical vapor deposition, 7. Clean energy, 01 natural sciences, CVD diamond detectors, Chemical reactions, n_TOF, Detectors and Experimental Techniques, Energy resolution, Nuclear Experiment, Instrumentation, Physics, sCVD diamond detectors, (n, α) Cross-section measurements, Large Hadron Collider, ntof, Detector, Resolution (electron density), Austria, Sponsored this work, Vienna, Nuclear Detector, Enginyeria química::Química física [Àrees temàtiques de la UPC], Nuclear and High Energy Physics, Cross-section measurements, Nanotechnology, engineering.material, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Reaccions químiques, Cross section (physics), 0103 physical sciences, (n,α) Cross-section measurement, Neutron, 010306 general physics, Diode, Energies::Energia nuclear [Àrees temàtiques de la UPC], CIVIDEC Instrumentation GmbH, 010308 nuclear & particles physics, (n,α) Cross-section measurements, n-TOF, neutrons, Diamond, (n, α) cross-section measurements, engineering, High Energy Physics::Experiment, diamond detector
Abstract: At the n\_TOF experiment at CERN a dedicated single-crystal chemical vapor deposition (sCVD) Diamond Mosaic-Detector has been developed for (n,$\alpha$) cross-section measurements. The detector, characterized by an excellent time and energy resolution, consists of an array of 9 sCVD diamond diodes. The detector has been characterized and a cross-section measurement has been performed for the $^{59}$Ni(n,$\alpha$)$^{56}$Fe reaction in 2012. The characteristics of the detector, its performance and the promising preliminary results of the experiment are presented., Comment: Conference proceedings of the Vienna Conference on Instrumentation 2013
Published: 2013
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67. Publisher's Note: Measurement of resolved resonances of232Th(n,γ) at the n_TOF facility at CERN [Phys. Rev. C85, 064601 (2012)]

Author: S. Andriamonje, A. Goverdovski, F. Alvarez-Velarde, M. C. Vincente, E. Chiaveri, K. Fujii, Gerald Badurek, P. F. Mastinu, A. Herrera-Martinez, N. Patronis, R. Dolfini, M. Mosconi, Arnaud Ferrari, Isabel Lopes, M. Embid-Segura, S. O'Brien, K. Wisshak, F. Voss, J. Salgado, A. Poch, B. Haas, S. Isaev, R. Terlizzi, G. Vannini, C. Lampoudis, G. Aerts, Manuel Lozano, C. T. Papadopoulos, A. Pavlik, C. Domingo-Pardo, N. Colonna, Vasilis Vlachoudis, F. Gramegna, E. Jericha, L. Tavora, I. Duran, M. Oshima, L. Ferrant, J. Marganiec, A. Lindote, L. Perrot, Masayuki Igashira, W. Dridi, J. Andrzejewski, H. Wendler, F. Bečvář, L. Marques, Corrie S. Moreau, C. Rubbia, P. Rullhusen, A. Plukis, L. Fitzpatrick, G. Cortes, R. Vlastou, C. Stephan, F. Gunsing, E. Berthoumieux, R. C. Haight, V. Chepel, G. Rudolf, Isabel S. Gonçalves, A. Ventura, C. Paradela, D. Villamarin, S. Marrone, M. Krtička, F. Calviño, L. Audouin, S. Lukic, V. Konovalov, Roberto Capote, P.A. Assimakopoulos, C. Pretel, P. Baumann, R. Ferreira-Marques, A. J. M. Plompen, F. Neves, D. Cano-Ott, H. Álvarez, I. Savvidis, P. M. Milazzo, J. L. Tain, Michael Wiescher, F. Käppeler, M. Dahlfors, P. Pavlopoulos, Marco T. Pigni, James L. Cox, H. Leeb, M. Kerveno, Rene Reifarth, P. Vaz, Aaron Couture, J. M. Quesada, L. Tassan-Got, A. Carrillo de Albornoz, E. Kossionides, D. Karamanis, S. Walter, Ralf Plag, Carlos Guerrero, U. Abbondanno, S. David, G. Tagliente, Heinz Oberhummer, W.I. Furman, C. A. Papachristodoulou, I. Dillman, L. Sarchiapone, Matthias Heil, J. Pancin, C. Eleftheriadis, Y. Kadi, Thomas Rauscher, H. Frais-Koelbl, D. Karadimos, P. E. Koehler, E. González-Romero, M. Rosetti, E. Griesmayer, A. Mengoni, V. Ketlerov, and P. Cennini
Subjects: Physics, Nuclear and High Energy Physics, Neutron capture, Large Hadron Collider, Radiative capture, Atomic physics
Published: 2012
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68. Measurement of resolved resonances of232Th(n,γ) at the n_TOF facility at CERN

Author: G. Cortes, J. Marganiec, S. Andriamonje, G. Aerts, E. Chiaveri, P. F. Mastinu, D. Cano-Ott, Roberto Capote, L. Sarchiapone, M. C. Vincente, A. Ventura, P.A. Assimakopoulos, S. Lukic, Christoph A. Stephan, F. Gunsing, Marco T. Pigni, H. Álvarez, V. Ketlerov, A. J. M. Plompen, V. Chepel, E. Griesmayer, J. L. Tain, N. Colonna, G. Vannini, P. Cennini, G. Rudolf, I. Dillman, S. Isaev, Carlos Guerrero, C. Pretel, B. Haas, P. Baumann, U. Abbondanno, F. Voss, A. Plukis, James L. Cox, Heinz Oberhummer, Thomas Rauscher, M. Mosconi, L. Ferrant, C. T. Papadopoulos, Matthias Heil, J. Pancin, Vasilis Vlachoudis, D. Karadimos, S. Walter, S. O'Brien, M. Krtička, F. Calviño, I. Savvidis, Masayuki Igashira, Corrie S. Moreau, R. C. Haight, J. Salgado, W. Dridi, Ralf Plag, L. Fitzpatrick, R. Ferreira-Marques, R. Terlizzi, A. Poch, M. Embid-Segura, C. Paradela, E. González-Romero, F. Gramegna, Rene Reifarth, L. Audouin, F. Käppeler, L. Tavora, L. Perrot, D. Villamarin, A. Lindote, I. Duran, C. Rubbia, Y. Kadi, H. Frais-Koelbl, C. Lampoudis, M. Rosetti, A. Pavlik, A. Goverdovski, C. Domingo-Pardo, F. Alvarez-Velarde, J. M. Quesada, L. Tassan-Got, Michael Wiescher, W.I. Furman, P. Rullhusen, R. Vlastou, E. Kossionides, E. Berthoumieux, Manuel Lozano, Gerald Badurek, R. Dolfini, K. Fujii, Isabel S. Gonçalves, C. Eleftheriadis, P. Pavlopoulos, S. Marrone, S. David, M. Oshima, J. Andrzejewski, G. Tagliente, P. E. Koehler, M. Dahlfors, C. A. Papachristodoulou, P. Vaz, M. Kerveno, L. Marques, Aaron Couture, V. Konovalov, Isabel Lopes, A. Herrera-Martinez, N. Patronis, Arnaud Ferrari, Alberto Mengoni, K. Wisshak, H. Wendler, H. Leeb, D. Karamanis, F. Neves, P. M. Milazzo, F. Bečvář, A. Carrillo de Albornoz, and E. Jericha
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, Resonance, 01 natural sciences, 7. Clean energy, Spectral line, Nuclear physics, Neutron capture, Yield (chemistry), 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Spectroscopy
Abstract: The yield of the neutron capture reaction 232Th(n,γ) has been measured at the neutron time-of-flight facility n-TOF at CERN in the energy range from 1 eV to 1 MeV. The reduction of the acquired data to the capture yield for resolved resonances from 1 eV to 4 keV is described and compared to a recent evaluated data set. The resonance parameters were used to assign an orbital momentum to each resonance. A missing level estimator was used to extract the s-wave level spacing of D0=17.2±0.9 eV. © 2012 American Physical Society.
Published: 2012
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69. Neutron-induced fission cross section of 245Cm: New results from data taken at the time-of-flight facility n_TOF

Author: G. Cortes, Gerald Badurek, P. Cennini, J. Pancin, E. Chiaveri, D. Cano-Ott, C. Eleftheriadis, B. Berthier, Michael Heil, E. Kossionides, J. Salgado, Javier Praena, C. Santos, I. Duran, M. Embid-Segura, S. Walter, Roberto Capote, Yacine Kadi, A. Poch, F. Bečvář, E. Mendoza, M. C. Vincente, J. Marganiec, S. Andriamonje, M. Dahlfors, Manuel Lozano, F. Neves, Ralf Plag, M. Mosconi, V. Ketlerov, P. Vaz, L. Ferrant, Peter Schillebeeckx, Iris Dillmann, D. Villamarin, W. Dridi, P. F. Mastinu, J. Cox, Alberto Ventura, S. Galanopoulos, Aaron Couture, Marco T. Pigni, G. Vannini, C. Lederer, C. Papadopoulos, Laurent Tassan-Got, C. Stephan, C. Lampoudis, Alfredo Ferrari, R. Ferreira-Marques, S. Marrone, A. Pavlik, C. Domingo-Pardo, L. Perrot, M. Kerveno, S. David, L. Sarchiapone, M. Meaze, G. Tagliente, M. Rosetti, R. Terlizzi, E. Gonzalez-Romero, G. Aerts, Carlos Guerrero, U. Abbondanno, F. Calviño, R. C. Haight, H. Leeb, P. E. Koehler, V. Chepel, Heinz Oberhummer, I. Goncalves, S. O'Brien, A. Plukis, P. Assimakopoulos, Mario Barbagallo, I. Savvidis, L. Tavora, Thomas Rauscher, Marco Calviani, L. Audouin, D. Karadimos, Michael Wiescher, H. Álvarez, W.I. Furman, P. Baumann, K. Wisshak, V. Variale, M. Krtička, R. Sarmento, J. L. Tain, A. J. M. Plompen, A. Herrera-Martinez, N. Patronis, P. Rullhusen, G. Rudolf, A. Lindote, T. Martinez, I. Lopes, C. A. Papachristodoulou, R. Vlastou, Alberto Mengoni, B. Haas, C. Carrapiço, Rene Reifarth, M. Igashira, P. Pavlopoulos, F. Gunsing, J. M. Quesada, Cristian Massimi, C. Paradela, S. Lukic, E. Jericha, D. Karamanis, E. Berthoumieux, F. Voss, F. Gramegna, Nicola Colonna, C. Moreau, P. M. Milazzo, J. Andrzejewski, Carlo Rubbia, V. Vlachoudis, V. Konovalov, G. Giubrone, C. Pretel, K. Fujii, Fabio Belloni, F. Käppeler, A. Goverdovski, F. Alvarez-Velarde, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, European Commission (EC), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aval du cycle et Energie Nucléaire (ACEN), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), nTOF, Calviani M., Meaze M. H., Colonna N., Praena J., Abbondanno U., Aerts G., Alvarez H., Alvarez-Velarde F., Andriamonje S., Andrzejewski J., Assimakopoulos P., Audouin L., Badurek G., Barbagallo M., Baumann P., Bečvář F., Belloni F., Berthier B., Berthoumieux E., Calviño F., Cano-Ott D., Capote R., Carrapiço C., Cennini P., Chepel V., Chiaveri E., Cortes G., Couture A., Cox J., Dahlfors M., David S., Dillmann I., Domingo-Pardo C., Dridi W., Duran I., Eleftheriadis C., Embid-Segura M., Ferrant L., Ferrari A., Ferreira-Marques R., Fujii K., Furman W., Galanopoulos S., Giubrone G., Gonçalves I., Gonzalez-Romero E., Goverdovski A., Gramegna F., Guerrero C., Gunsing F., Haas B., Haight R., Heil M., Herrera-Martinez A., Igashira M., Jericha E., Käppeler F., Kadi Y., Karadimos D., Karamanis D., Ketlerov V., Kerveno M., Koehler P., Konovalov V., Kossionides E., Krtička M., Lampoudis C., Lederer C., Leeb H., Lindote A., Lopes I., Lozano M., Lukic S., Marganiec J., Marrone S., Martínez T., Massimi C., Mastinu P., Mendoza E., Mengoni A., Milazzo P. M., Moreau C., Mosconi M., Neves F., Oberhummer H., O’Brien S., Pancin J., Papachristodoulou C., Papadopoulos C., Paradela C., Patronis N., Pavlik A., Pavlopoulos P., Perrot L., Pigni M. T., Plag R., Plompen A., Plukis A., Poch A., Pretel C., Quesada J., Rauscher T., Reifarth R., Rosetti M., Rubbia C., Rudolf G., Rullhusen P., Salgado J., Santos C., Sarchiapone L., Sarmento R., Savvidis I., Schillebeeckx P., Stephan C., Tagliente G., Tain J. L., Tassan-Got L., Tavora L., Terlizzi R., Vannini G., Variale V., Vaz P., Ventura A., Villamarin D., Vincente M. C., Vlachoudis V., Vlastou R., Voss F., Walter S., Wiescher M., Wisshak K., Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Nuclear and High Energy Physics, Range (particle radiation), Isotope, 010308 nuclear & particles physics, Fission, Nuclear Theory, Absolute value, Energies::Energia nuclear::Reactors nuclears de fissió [Àrees temàtiques de la UPC], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Neutron temperature, NEUTRON INDUCED FISSION, Fissió nuclear, Nuclear physics, Time of flight, Cross section (physics), 0103 physical sciences, Fission cross sections, Neutron, 010306 general physics, Nuclear Experiment, TIME OF FLIGHT
Abstract: The neutron-induced fission cross section of 245Cm was measured at n-TOF in a wide energy range and with high resolution. The energy dependence, measured in a single measurement from 30 meV to 1 MeV neutron energy, has been determined with 5% accuracy relative to the 235U(n,f) cross section. In order to reduce the uncertainty on the absolute value, the data have been normalized at thermal energy to recent measurements performed at ILL and BR1. In the energy range of overlap, the results are in fair agreement with some previous measurements and confirm, on average, the evaluated cross section in the ENDF/B-VII.0 database, although sizable differences are observed for some important resonances below 20 eV. A similar behavior is observed relative to JENDL/AC-2008, a reactor-oriented database for actinides. The new results contribute to the overall improvement of the databases needed for the design of advanced reactor systems and may lead to refinements of fission models for the actinides. Comisión Europea FIKW-CT-2000-00107 249671
Published: 2012
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70. Measurement and resonance analysis of the 237Np neutron capture cross section

Author: M. Embid-Segura, Manuel Lozano, L. Perrot, R. Lossito, V. Chepel, Ralf Plag, Rene Reifarth, P. Baumann, I. Duran, P. Cennini, E. Kossionides, W.I. Furman, M. Mosconi, G. Aerts, A. Lindote, C. Stephan, C. A. Papachristodoulou, Javier Praena, P. Pavlopoulos, S. O'Brien, J. M. Quesada, A. Herrera-Martinez, N. Patronis, R. Terlizzi, F. Voss, F. Becvar, C. Eleftheriadis, M. C. Vicente, Alberto Mengoni, A. J. M. Plompen, P. M. Milazzo, A. Carrillo de Albornoz, G. Rudolf, L. Ferrant, M. Igashira, I. Lopes, Yacine Kadi, Nicola Colonna, D. Villamarin, P. E. Koehler, L. Fitzpatrick, J. Salgado, Marco T. Pigni, A. Poch, M. Oshima, J. L. Tain, J. Andrzejewski, Carlos Guerrero, Carlo Rubbia, Alfredo Ferrari, R. Ferreira-Marques, S. Isaev, Heinz Oberhummer, V. Vlachoudis, U. Abbondanno, L. Tavora, V. Konovalov, E. Griesmayer, J. Cox, Laurent Tassan-Got, S. David, G. Cortes, P. Rullhusen, G. Tagliente, C. Massimi, E. Jericha, R. C. Haight, Roberto Capote, V. Ketlerov, C. Carrapiço, P.A. Assimakopoulos, M. Kerveno, F. Neves, L. Audouin, F. Käppeler, G. Vannini, E. Gonzalez-Romero, Michael Wiescher, I. Goncalves, Thomas Rauscher, D. Karamanis, I. Dillmann, C. Moreau, D. Karadimos, Michael Heil, S. Walter, C. T. Papadopoulos, F. Gramegna, A. Plukis, A. Goverdovski, C. Santos, F. Alvarez-Velarde, Gerald Badurek, W. Dridi, R. Dolfini, M. Rosetti, S. Marrone, E. Mendoza, B. Haas, J. Marganiec, S. Andriamonje, R. Vlastou, P. F. Mastinu, E. Berthoumieux, I. Savvidis, M. Calviani, H. Frais-Koelbl, C. Paradela, S. Lukic, L. Marques, M. Krtička, C. Pretel, T. Martinez, K. Fujii, Fabio Belloni, F. Calviño, H. Leeb, L. Sarchiapone, M. Dahlfors, P. Vaz, Alberto Ventura, Aaron Couture, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, F. Gunsing, J. Pancin, E. Chiaveri, D. Cano-Ott, K. Wisshak, H. Wendler, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aval du cycle et Energie Nucléaire (ACEN), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), TOF, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, European Union (UE), Ministerio de Educación y Ciencia (MEC). España, Guerrero C., Cano-Ott D., Mendoza E., Abbondanno U., Aerts G., Alvarez-Velarde F., Andriamonje S., Andrzejewski J., Assimakopoulos P., Audouin L., Badurek G., Baumann P., Becvar F., Belloni F., Berthoumieux E., Calvino F., Calviani M., Capote R., Carrapico C., Carrillo de Albornoz A., Cennini P., Chepel V., Chiaveri E., Colonna N., Cortes G., Couture A., Cox J., Dahlfors M., David S., Dillmann I., Dolfini R., Domingo-Pardo C., Dridi W., Duran I., Eleftheriadis C., Embid-Segura M., Ferrant L., Ferrari A., Ferreira-Marques R., Fitzpatrick L., Frais-Koelbl H., Fujii K., Furman W., Goncalves I., Gonzalez-Romero E., Goverdovski A., Gramegna F., Griesmayer E., Gunsing F., Haas B., Haight R., Heil M., Herrera-Martinez A., Igashira M., Isaev S., Jericha E., Kaeppeler F., Kadi Y., Karadimos D., Karamanis D., Ketlerov V., Kerveno M., Koehler P., Konovalov V., Kossionides E., Krticka M., Lampoudis C., Leeb H., Lindote A., Lopes I., Lossito R., Lozano M., Lukic S., Marganiec J., Marques L., Marrone S., Martinez T., Massimi C., Mastinu P., Mengoni A., Milazzo P. M., Moreau C., Mosconi M., Neves F., Oberhummer H., O'Brien S., Oshima M., Pancin J., Papachristodoulou C., Papadopoulos C., Paradela C., Patronis N., Pavlik A., Pavlopoulos P., Perrot L., Pigni M. T., Plag R., Plompen A., Plukis A., Poch A., Praena J., Pretel C., Quesada J., Rauscher T., Reifarth R., Rosetti M., Rubbia C., Rudolf G., Rullhusen P., Salgado J., Santos C., Sarchiapone L., Savvidis I., Stephan C., Tagliente G., Tain J. L., Tassan-Got L., Tavora L., Terlizzi R., Vannini G., Vaz P., Ventura A., Villamarin D., Vicente M. C., Vlachoudis V., Vlastou R., Voss F., Walter S., Wendler H., Wiescher M., Wisshak K., Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, CAPTURE CROSS-SECTION, Detector, Nuclear data, BARIUM-FLORIDE CALORIMETER, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Resonance (particle physics), Calorimeter, Nuclear physics, Cross section (physics), 0103 physical sciences, Range (statistics), Neutron cross section, Nuclear Physics - Experiment, GAMMA SPECTROSCOPY, 010306 general physics, EMERGING NUCLEAR TECHNOLOGIES
Abstract: The neutron capture cross section of 237Np was measured between 0.7 and 500 eV at the CERN n-TOF facility using the 4π BaF2 Total Absorption Calorimeter. The experimental capture yield was extracted minimizing all the systematic uncertainties and was analyzed together with the most reliable transmission data available using the sammy code. The result is a complete set of individual as well as average resonance parameters [D0=0.56(2) eV, Γγ=40.9(18) meV, 104S0=0.98(6), R ′=9.8(6) fm]. The capture cross section obtained in this work is in overall agreement with the evaluations and the data of Weston and Todd, thus showing sizable differences with respect to previous data from Scherbakov and large discrepancies with data Kobayashi. The results indicate that a new evaluation combining the present capture data with reliable transmission data would allow reaching an accuracy better than 4%, in line with the uncertainty requirements of the nuclear data community for the design and operation of current and future nuclear devices. Unión Europea NTOF-NDXADS IP-EUROTRANS CIEMAT-ENRESA Plan Nacional de Física de Partículas (España) FPA2005-06918-C03-01 Programa Consolider-Ingenio 2010 (España)
Published: 2012
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71. Neutron-induced fission cross section measurement of233U,241Am and243Am in the energy range 0.5 MeV ⩽En⩽ 20 MeV at n_TOF at CERN

Author: G. Cortes, J. Pancin, C. Lederer, R. Vlastou, H. Leeb, S. David, L. Perrot, P. Cennini, F. Calvino, Anton Wallner, Corrie S. Moreau, V. Chepel, Roberto Capote, P. Baumann, Y. Kadi, G. Tagliente, P.A. Assimakopoulos, M. Kerveno, C. Eleftheriadis, A. Goverdovski, F. Alvarez-Velarde, H. Frais-Koelbl, Thomas Rauscher, M. Dahlfors, F. Gunsing, Gerald Badurek, R. Dolfini, G. Aerts, M. Mosconi, P. Vaz, G. Vannini, J. Marganiec, S. Andriamonje, Marco Calviani, Cristian Massimi, P. Pavlopoulos, Aaron Couture, J. Salgado, A. J. M. Plompen, F. Belloni, C. Stephan, S. O'Brien, Mario Barbagallo, Carlos Guerrero, A. Poch, Marco T. Pigni, D. Karadimos, I. Dillmann, G. Rudolf, F. Cerutti, D. Cano-Ott, C. Pretel, E. Chiaveri, E. Jericha, L. Marques, I. Lopes, Michael Heil, A. Pavlik, Heinz Oberhummer, C. Santos, P. F. Mastinu, R. Terlizzi, S. Walter, C. Domingo-Pardo, L. Ferrant, K. Wisshak, A. Lindote, James L. Cox, E. González-Romero, L. Fitzpatrick, L. Tavora, K. Fujii, R. C. Haight, Masayuki Igashira, C. Paradela, H. Wendler, L. Audouin, M. Embid-Segura, D. Villamarin, P. E. Koehler, P. Rullhusen, V. Ketlerov, Michael Wiescher, L. Sarchiapone, ntof, F. Bečvář, M. Meaze, Manuel Lozano, Ralf Plag, H. Álvarez, M. Oshima, M. Krtička, J. L. Tain, C Lampoudis, J. Andrzejewski, M. Rosetti, F. Voss, W.I. Furman, C. T. Papadopoulos, E. Kossionides, R. Ferreira-Marques, T. Martinez, I. Duran, C. A. Papachristodoulou, F. Neves, P. M. Milazzo, C. Rubbia, V. Konovalov, Javier Praena, Isabel S. Gonçalves, A. Plukis, S. Marrone, A. Carrillo de Albornoz, F. Käppeler, E. Griesmayer, S. Lukic, Nicola Colonna, A. Herrera-Martinez, N. Patronis, Arnaud Ferrari, Vasilis Vlachoudis, Alberto Mengoni, A. Ventura, F. Gramegna, I. Savvidis, B. Haas, M. C. Vincente, W. Dridi, Rene Reifarth, J. M. Quesada, L. Tassan-Got, S. Isaev, U. Abbondanno, E. Berthoumieux, C. Carrapiço, D. Karamanis, F Belloni, P M Milazzo, M Calviani, N Colonna, P Mastinu, U Abbondanno, G Aert, H Álvarez, F Álvarez-Velarde, S Andriamonje, J Andrzejewski, P Assimakopoulo, L Audouin, G Badurek, M Barbagallo, P Baumann, F Bečvář, E Berthoumieux, F Calviño, F Cerutti, D Cano-Ott, R Capote, C Carrapiço, A Carrillo de Albornoz, P Cennini, V Chepel, E Chiaveri, G Corte, A Couture, J Cox, M Dahlfor, S David, I Dillmann, R Dolfini, C Domingo-Pardo, W Dridi, I Duran, C Eleftheriadi, M Embid-Segura, L Ferrant, A Ferrari, R Ferreira-Marque, L Fitzpatrick, H Frais-Koelbl, K Fujii, W Furman, I Goncalve, E González-Romero, A Goverdovski, F Gramegna, E Griesmayer, C Guerrero, F Gunsing, B Haa, R Haight, M Heil, A Herrera-Martinez, M Igashira, S Isaev, E Jericha, F Käppeler, Y Kadi, D Karadimo, D Karamani, V Ketlerov, M Kerveno, P Koehler, V Konovalov, E Kossionide, M Krtička, C Lampoudi, C Lederer, H Leeb, A Lindote, I Lope, M Lozano, S Lukic, J Marganiec, L Marque, S Marrone, T Martínez, C Massimi, M H Meaze, A Mengoni, C Moreau, M Mosconi, F Neve, H Oberhummer, S O'Brien, M Oshima, J Pancin, C Papachristodoulou, C Papadopoulo, C Paradela, N Patroni, A Pavlik, P Pavlopoulo, L Perrot, M T Pigni, R Plag, A Plompen, A Pluki, A Poch, J Praena, C Pretel, J Quesada, T Rauscher, R Reifarth, M Rosetti, C Rubbia, G Rudolf, P Rullhusen, J Salgado, C Santo, L Sarchiapone, I Savvidi, C Stephan, G Tagliente, J L Tain, L Tassan-Got, L Tavora, R Terlizzi, G Vannini, P Vaz, A Ventura, D Villamarin, M C Vincente, V Vlachoudi, R Vlastou, F Vo, A Wallner, S Walter, H Wendler, M Wiescher, and K Wisshak
Subjects: Fission, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, 01 natural sciences, 7. Clean energy, Nuclear physics, Cross section (physics), 0103 physical sciences, Neutron cross section, Neutron, 010306 general physics, Nuclear Experiment, Mathematical Physics, EMERGING NUCLEAR TECHNOLOGIES, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Neutron radiation, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, NEUTRON INDUCED FISSION, Time of flight, TIME-OF-FLIGHT, Ionization chamber, Physics::Accelerator Physics, Atomic physics
Abstract: Neutron-induced fission cross section measurements of U-233, Am-243 and Am-241 relative to U-235 have been carried out at the neutron time-of-flight facility n_TOF at CERN. A fast ionization chamber has been employed. All samples were located in the same detector; therefore the studied elements and the reference U-235 target are subject to the same neutron beam.
Published: 2012

72. Apparent anyonic behaviour of the neutron wavefunction in the time domain

Author: Y.D. Zhang, Johann Summhammer, Gerald Badurek, and G. Krenn
Subjects: Physics, Spin states, Quantum mechanics, Quantum electrodynamics, General Physics and Astronomy, Motion (geometry), Condensed Matter::Strongly Correlated Electrons, Neutron, Wave function, Symmetry (physics), Heisenberg picture, Fock space, Spin-½
Abstract: A new perturbative treatment of the motion of the neutron spin in an oscillating magnetic field is given in the Heisenberg picture in the Fock space of spin states. Special cases are discussed where, in terms of temporal symmetry, the periodicity of the wavefunction exhibits either fermionic, bosonic or anyonic behavior.
Published: 1994
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73. Spin evolution of a neutral particle in an oscillating magnetic field

Author: Johann Summhammer, Helmut Rauch, Y.D. Zhang, and Gerald Badurek
Subjects: Physics, Larmor precession, Spin polarization, Geometric phase, Quantum mechanics, General Physics and Astronomy, Equations of motion, Neutron, Neutral particle, WKB approximation, Magnetic field
Abstract: We study the motion of the neutron spin in an oscillating magnetic field within the frame of the WKB approximation. We calculate the neutron wavefunction and the orbit of the polarization vector on the unit sphere for the case where the Larmor precession frequency is much higher than the oscillation frequency of the magnetic field. Furthermore, we also present some other analytic methods to solve the spin equation of motion in an oscillating field. Finally we show that the geometric phase shift due to the oscillating field component vanishes.
Published: 1994
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74. AUSTRON and its notable new features

Author: E. Jericha, M. Regler, Helmut Rauch, and Gerald Badurek
Subjects: Physics, business.industry, Nuclear engineering, General Chemistry, Resonator, Narrow band, Optics, Perfect crystal, Physics::Accelerator Physics, General Materials Science, Spallation, Neutron, Neutron reflectometry, Nuclear Experiment, business, Project group, Beam (structure)
Abstract: The 10 Hz/0.5 MW AUSTRON neutron spallation source is dedicated for high-resolution structural and dynamical investigations of condensed matter and for new fundamental research with neutrons. New magnetic focusing and bunching systems are under development, which create additional intensity-gain factors of 10–20. Clean-room conditions including vibration, temperature and humidity control will improve the standard of neutron optical and neutron reflectometry experiments considerably. Narrow band neutron perfect crystal resonators and storage systems are foreseen for a novel beam tailoring. A dedicated new ultra-cold neutron station will open a new horizon for experiments in the sub-neV region. Recently, the project secured additional support of the Austrian Governmental Board for Research and Technological Development, which recommended the forced continuation of the project, the installation of a professional project group and the cooperation with the European Spallation Source (ESS) project and with the neighboring countries.
Published: 2002
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75. Loss-free polarization of pulsed neutron beams

Author: S. Müller and Gerald Badurek
Subjects: Physics, Larmor precession, Spin states, Spin polarization, Neutron magnetic moment, Magnetic moment, General Materials Science, Neutron, General Chemistry, Atomic physics, Polarization (waves), Magnetic field
Abstract: We study the feasibility and efficiency of the so-called “dynamical polarization” of neutrons under realistic conditions. This loss-free technique exploits the spin-dependent energy shift of neutrons traversing a NMR-like magnetic field arrangement in combination with Larmor precession of their magnetic moments to end up in a situation where all particles finally are in the same spin state. We present possible field configurations for the application of this dynamical polarization method to pulsed polychromatic beams and investigate their stability under realistic experimental conditions.
Published: 2002
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76. 96Zr(n,γ) measurement at the n_TOF facility at CERN

Author: Rene Reifarth, C. T. Papadopoulos, J. Marganiec, J. M. Quesada, S. Andriamonje, C. Rubbia, P. Cennini, L. Tassan-Got, M. C. Vincente, F. Calviño, H. Leeb, E. Chiaveri, Isabel S. Gonçalves, G. Cortes, Pierfrancesco Mastinu, Christoph A. Stephan, K. Wisshak, G. Aerts, S. Marrone, F. Gunsing, F. Alvarez-Velarde, Gerald Badurek, S. Lukic, Corrie S. Moreau, M. Kerveno, Cristian Massimi, A. Mengoni, Roberto Capote, M. Mosconi, M. Krtička, S. David, F. Gramegna, P. Pavlopoulos, Marco Calviani, A. Ventura, E. Jericha, M. Dahlfors, G. Tagliente, R. Ferreira-Marques, T. Martinez, G. Vannini, E. Kossionides, P. Vaz, R. Vlastou, C. Pretel, S. O'Brien, A. Lindote, E. Berthoumieux, E. Gonzalez-Romero, K. Fujii, J. Salgado, A. Poch, B. Haas, H. Álvarez, L. Perrot, C. Lamboudis, J. L. Tain, Aaron Couture, F. Käppeler, A. Plukis, I. Savvidis, A. Herrera-Martinez, N. Patronis, Fabio Belloni, C. Carrapiço, F. Voss, V. Chepel, G. Rudolf, R. Terlizzi, Arnaud Ferrari, J. Pancin, C. Eleftheriadis, A. Pavlik, P. Baumann, Nicola Colonna, C. Santos, W. Dridi, R. C. Haight, C. Domingo-Pardo, F. Bečvář, C. Paradela, L. Tavora, Vasilis Vlachoudis, Y. Kadi, D. Karamanis, I. Dillmann, Martin Heil, L. Audouin, D. Karadimos, Michael Wiescher, J. Andrzejewski, D. Villamarin, L. Sarchiapone, Marco T. Pigni, P. Rullhusen, M. Rosetti, F. Neves, P. M. Milazzo, I. Duran, M. Embid-Segura, Isabel Lopes, Javier Praena, S. Walter, Ralf Plag, D. Cano-Ott, W.I. Furman, A. J. M. Plompen, C. A. Papachristodoulou, Carlos Guerrero, U. Abbondanno, and Heinz Oberhummer
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, 0103 physical sciences, Radiative capture, Neutron cross section, Atomic physics, s-process, 010303 astronomy & astrophysics, 01 natural sciences, Spallation Neutron Source
Abstract: The (n,γ) cross section of 96Zr has been investigated at the CERN n-TOF spallation neutron source. High-resolution time-of-flight measurements using an enriched ZrO2 sample allowed us to analyze 15 resonances below 40 keV with improved accuracy. On average, the capture widths were found to be 25% smaller than reported in earlier experiments. If complemented with the contribution by direct radiative capture, the derived Maxwellian averaged cross sections are consistent with activation data at kT=25 keV. The present results confirm the astrophysical implications for the s-process branching at 95Zr. © 2011 American Physical Society.
Published: 2011
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77. Measurement of the236U(n,f) cross section from 170 meV to 2 MeV at the CERNn_TOFfacility

Author: J. Marganiec, Rene Reifarth, S. Andriamonje, A. Herrera-Martinez, N. Patronis, Alberto Mengoni, I. Goncalves, M. Igashira, P. Cennini, G. Vannini, J. Salgado, Thomas Rauscher, P. Pavlopoulos, Alfredo Ferrari, R. Ferreira-Marques, A. Poch, M. Oshima, J. M. Quesada, R. Vlastou, D. Karadimos, P. F. Mastinu, J. Andrzejewski, C. Paradela, C. Carrapiço, F. Käppeler, C. Lampoudis, S. Lukic, A. Pavlik, E. Jericha, Fabio Belloni, Carlo Rubbia, E. Kossionides, V. Vlachoudis, W. Dridi, R. C. Haight, C. Domingo-Pardo, Javier Praena, V. Ketlerov, M. Mosconi, H. Frais-Koelbl, C. Pretel, C. Papachristodoulou, S. Marrone, C. Papadopoulos, G. Cortes, V. Konovalov, Carlos Guerrero, I. Duran, D. Tarrío, M. Barbagallo, C. Stephan, M. Krtička, H. Álvarez, F. Calviño, J. L. Tain, L. Marques, L. Audouin, S. David, M. Rosetti, Heinz Oberhummer, Michael Heil, L. Sarchiapone, T. Martinez, M. C. Vicente, P. M. Milazzo, G. Tagliente, M. Kerveno, A. Carrillo de Albornoz, Roberto Capote, L. Perrot, Michael Wiescher, D. Karamanis, I. Dillmann, S. O'Brien, F. Voss, R. Terlizzi, D. Villamarin, E. Gonzalez-Romero, F. Neves, Marco T. Pigni, P. Assimakopoulos, F. Becvar, Marco Calviani, Ralf Plag, A. Plukis, E. Mendoza, M. Diakaki, Nicola Colonna, L. Tavora, J. Cox, C. Eleftheriadis, Laurent Tassan-Got, F. Gramegna, W.I. Furman, Yacine Kadi, M. Dahlfors, A. Lindote, E. Griesmayer, P. Vaz, P. E. Koehler, Alberto Ventura, Aaron Couture, P. Rullhusen, C. Moreau, V. Chepel, J. Pancin, E. Chiaveri, D. Cano-Ott, P. Baumann, S. Isaev, E. Berthoumieux, I. Savvidis, G. Aerts, F. Gunsing, A. Goverdovski, Cristian Massimi, F. Alvarez-Velarde, K. Fuji, Gerald Badurek, R. Dolfini, C. Lederer, K. Wisshak, S. Walter, H. Wendler, H. Leeb, Manuel Lozano, L. Ferrant, R. Sarmento, A. J. M. Plompen, G. Rudolf, I. Lopes, and B. Haas
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Nuclear Theory, Resonance, Nuclear data, 7. Clean energy, 01 natural sciences, Uranium-236, Nuclear physics, 0103 physical sciences, Neutron cross section, Uranium-235, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract: The neutron-induced fission cross section of {sup 236}U was measured at the neutron Time-of-Flight (n-TOF) facility at CERN relative to the standard {sup 235}U(n,f) cross section for neutron energies ranging from above thermal to several MeV. The measurement, covering the full range simultaneously, was performed with a fast ionization chamber, taking advantage of the high resolution of the n-TOF spectrometer. The n-TOF results confirm that the first resonance at 5.45 eV is largely overestimated in some nuclear data libraries. The resonance triplet around 1.2 keV was measured with high resolution and resonance parameters were determined with good accuracy. Resonances at high energy have also been observed and characterized and different values for the cross section are provided for the region between 10 keV and the fission threshold. The present work indicates various shortcomings of the current nuclear data libraries in the subthreshold region and provides the basis for an accurate re-evaluation of the {sup 236}U(n,f) cross section, which is of great relevance for the development of emerging or innovative nuclear reactor technologies.
Published: 2011
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78. Neutron capture onZr94: Resonance parameters and Maxwellian-averaged cross sections

Author: Christoph A. Stephan, B. Haas, J. Marganiec, S. Andriamonje, F. Gunsing, G. Aerts, G. Cortes, Cristian Massimi, E. Chiaveri, C. Eleftheriadis, P. F. Mastinu, L. Perrot, R. Gallino, Thomas Rauscher, F. Alvarez-Velarde, C. Carrapiço, D. Karadimos, M. Rosetti, W. Dridi, A. Mengoni, N. Colonna, Roberto Capote, Gerald Badurek, Rene Reifarth, P. Cennini, A. J. M. Plompen, M. Dahlfors, Sara Bisterzo, P. Vaz, M. Embid-Segura, S. Lukic, E. Gonzalez-Romero, J. Salgado, A. Poch, A. Herrera-Martinez, N. Patronis, Aaron Couture, H. Leeb, I. Savvidis, J. M. Quesada, A. Plukis, Arnaud Ferrari, L. Tassan-Got, E. Kossionides, G. Vannini, R. C. Haight, Manuel Lozano, F. Gramegna, Marco Calviani, C. Paradela, James L. Cox, A. Pavlik, C. Domingo-Pardo, M. Mosconi, Martin Heil, K. Wisshak, Javier Praena, V. Chepel, G. Rudolf, C. T. Papadopoulos, A. Lindote, L. Audouin, M. Krtička, F. Calviño, R. Vlastou, F. Neves, P. M. Milazzo, C. Rubbia, Michael Wiescher, P. Baumann, F. Voss, S. O'Brien, E. Berthoumieux, Corrie S. Moreau, R. Ferreira-Marques, T. Martinez, A. Ventura, C. Santos, D. Villamarin, Isabel S. Gonçalves, Vasilis Vlachoudis, I. Duran, S. Marrone, D. Cano-Ott, Marco T. Pigni, R. Terlizzi, M. Kerveno, J. Andrzejewski, F. Bečvář, E. Jericha, S. David, G. Tagliente, P. Pavlopoulos, L. Tavora, Isabel Lopes, H. Álvarez, C. Lamboudis, J. L. Tain, L. Sarchiapone, K. Fujii, P. Rullhusen, Fabio Belloni, C. Pretel, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, W.I. Furman, C. A. Papachristodoulou, S. Walter, Ralf Plag, F. Käppeler, J. Pancin, D. Karamanis, I. Dillmann, Y. Kadi, and M. C. Vincente
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, 7. Clean energy, 01 natural sciences, Neutron temperature, Nuclear physics, Neutron capture, 0103 physical sciences, Neutron cross section, Neutron source, Isotopes of zirconium, Neutron, Nuclear Experiment, s-process, 010303 astronomy & astrophysics
Abstract: The neutron capture cross sections of the Zr isotopes play an important role in nucleosynthesis studies. The s-process reaction flow between the Fe seed and the heavier isotopes passes through the neutron magic nucleus {sup 90}Zr and through {sup 91,92,93,94}Zr, but only part of the flow extends to {sup 96}Zr because of the branching point at {sup 95}Zr. Apart from their effect on the s-process flow, the comparably small isotopic (n,{gamma}) cross sections make Zr also an interesting structural material for nuclear reactors. The {sup 94}Zr (n,{gamma}) cross section has been measured with high resolution at the spallation neutron source n{sub T}OF at CERN and resonance parameters are reported up to 60 keV neutron energy.
Published: 2011
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79. Neutron-induced fission cross section ofnatPb andBi209from threshold to 1 GeV: An improved parametrization

Author: D. Tarrío, A. J. M. Plompen, I. Goncalves, G. Rudolf, I. Lopes, S. David, G. Tagliente, C. Lederer, Thomas Rauscher, D. Karadimos, M. Embid-Segura, Roberto Capote, B. Haas, Manuel Lozano, F. Neves, J. Marganiec, L. Ferrant, S. Andriamonje, D. Karamanis, I. Dillmann, J. Salgado, A. Poch, G. Aerts, V. Ketlerov, Alfredo Ferrari, R. Ferreira-Marques, A. Goverdovski, F. Alvarez-Velarde, C. Papachristodoulou, P. F. Mastinu, F. Gunsing, C. Papadopoulos, S. Isaev, Gerald Badurek, D. Trubert, Cristian Massimi, R. Dolfini, L. Sarchiapone, B. Berthier, F. Gramegna, E. Griesmayer, L. Tavora, Michael Heil, G. Vannini, Ralf Plag, A. Carrillo de Albornoz, E. Kossionides, P. Rullhusen, P. E. Koehler, Javier Praena, D. Villamarin, H. Leeb, Marco T. Pigni, Carlos Guerrero, R. Vlastou, U. Abbondanno, Heinz Oberhummer, M. Rosetti, P. M. Milazzo, I. Duran, E. Gonzalez-Romero, A. Plukis, C. Santos, E. Jericha, J. Cox, W.I. Furman, C. Paradela, H. Frais-Koelbl, S. Lukic, A. Lindote, A. Herrera-Martinez, N. Patronis, Laurent Tassan-Got, F. Bečvář, M. Krtička, F. Calviño, Marco Calviani, E. Mendoza, Roberto Losito, M. Oshima, Alberto Mengoni, C. Moreau, T. Martinez, J. Andrzejewski, F. Voss, M. Igashira, C. Le Naour, Carlo Rubbia, V. Vlachoudis, K. Wisshak, L. Fitzpatrick, E. Berthoumieux, R. Sarmento, S. O'Brien, Nicola Colonna, V. Konovalov, H. Wendler, K. Fujii, Rene Reifarth, R. C. Haight, P. Pavlopoulos, J. M. Quesada, L. Audouin, Fabio Belloni, Michael Wiescher, S. Walter, C. Carrapiço, C. Eleftheriadis, M. Kerveno, I. Savvidis, L. Perrot, Yacine Kadi, P. Assimakopoulos, C. Pretel, V. Chepel, P. Baumann, W. Dridi, S. Marrone, J. L. Tain, J. Pancin, E. Chiaveri, D. Cano-Ott, P. Cennini, M. Mosconi, C. Stephan, M. Dahlfors, R. Terlizzi, P. Vaz, Alberto Ventura, Aaron Couture, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, L. Marques, F. Käppeler, and G. Cortes
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Isotopes of uranium, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Fission, Nuclear Theory, Threshold energy, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Uranium-235, Neutron detection, Neutron source, Neutron, Nuclear Experiment, 010306 general physics
Abstract: Neutron-induced fission cross sections for {sup nat}Pb and {sup 209}Bi were measured with a white-spectrum neutron source at the CERN Neutron Time-of-Flight (n{sub T}OF) facility. The experiment, using neutrons from threshold up to 1 GeV, provides the first results for these nuclei above 200 MeV. The cross sections were measured relative to {sup 235}U and {sup 238}U in a dedicated fission chamber with parallel plate avalanche counter detectors. Results are compared with previous experimental data. Upgraded parametrizations of the cross sections are presented, from threshold energy up to 1 GeV. The proposed new sets of fitting parameters improve former results along the whole energy range.
Published: 2011
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80. Au197(n,γ) cross section in the unresolved resonance region

Author: I. Goncalves, M. Embid-Segura, A. J. M. Plompen, Thomas Rauscher, C. Lampoudis, J. Salgado, A. Poch, G. Rudolf, I. Lopes, A. Pavlik, G. Vannini, C. Domingo-Pardo, A. Goverdovski, D. Karadimos, F. Alvarez-Velarde, L. Marques, G. Aerts, W.I. Furman, Manuel Lozano, J. Cox, E. Griesmayer, Laurent Tassan-Got, Gerald Badurek, A. Lindote, L. Tavora, L. Perrot, R. Dolfini, P. Rullhusen, P. E. Koehler, L. Sarchiapone, M. Dahlfors, P. Vaz, F. Käppeler, A. Herrera-Martinez, N. Patronis, Alfredo Ferrari, R. Ferreira-Marques, M. Rosetti, S. David, G. Cortes, Alberto Ventura, Aaron Couture, E. Kossionides, G. Tagliente, Carlos Guerrero, D. Tarrío, L. Ferrant, J. Pancin, Heinz Oberhummer, L. Fitzpatrick, M. Oshima, E. Chiaveri, Marco Calviani, Roberto Capote, D. Cano-Ott, M. Igashira, Javier Praena, P.A. Assimakopoulos, C. Lederer, F. Neves, C. Moreau, V. Chepel, J. Andrzejewski, P. Baumann, C. Santos, Carlo Rubbia, V. Vlachoudis, V. Ketlerov, F. Voss, C. Papachristodoulou, R. Sarmento, R. Vlastou, Ralf Plag, S. Walter, E. Mendoza, E. Jericha, Nicola Colonna, H. Frais-Koelbl, C. Pretel, I. Duran, V. Konovalov, I. Savvidis, Massimo Barbagallo, Anton Wallner, Michael Heil, P. M. Milazzo, C. Paradela, A. Carrillo de Albornoz, S. Lukic, D. Karamanis, I. Dillmann, Roberto Losito, K. Fujii, Fabio Belloni, F. Gramegna, S. Isaev, U. Abbondanno, E. Berthoumieux, C. Carrapiço, E. Gonzalez-Romero, B. Haas, A. Plukis, J. Marganiec, S. Andriamonje, P. F. Mastinu, Rene Reifarth, P. Pavlopoulos, J. M. Quesada, M. Krtička, F. Calviño, T. Martinez, R. C. Haight, L. Audouin, Michael Wiescher, D. Villamarin, Marco T. Pigni, C. Eleftheriadis, Yacine Kadi, P. Cennini, M. Mosconi, C. Stephan, S. O'Brien, R. Terlizzi, F. Bečvář, K. Wisshak, C. T. Papadopoulos, W. Dridi, S. Marrone, M. Kerveno, H. Wendler, Alberto Mengoni, H. Álvarez, J. L. Tain, F. Gunsing, Cristian Massimi, and H. Leeb
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Resonance, Nuclear data, 01 natural sciences, 7. Clean energy, Neutron spectroscopy, Nuclear physics, Cross section (physics), Neutron capture, 0103 physical sciences, Neutron, 010306 general physics, Energy (signal processing)
Abstract: The cross section of the reaction {sup 197}Au(n,{gamma}) was measured with the time-of-flight technique at the n{_}TOF (neutron time-of-flight) facility in the unresolved resonance region between 5 and 400 keV using a pair of C{sub 6}D{sub 6} (where D denotes {sup 2}H) liquid scintillators for the detection of prompt capture {gamma} rays. The results with a total uncertainty of 3.9%-6.7% for a resolution of 20 bins per energy decade show fair agreement with the Evaluated Nuclear Data File Version B-VII.0 (ENDF/B-VII.0), which contains the standard evaluation. The Maxwellian-averaged cross section (MACS) at 30 keV is in excellent agreement with the one according to the ENDF/B-VII.0 evaluation and 4.7% higher than the MACS measured independently by activation technique. Structures in the cross section, which had also been reported earlier, have been interpreted as being due to clusters of resonances.
Published: 2011
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81. Neutron-induced fission cross-section of 233U in the energy range 0.5 < En < 20 MeV

Author: M. Krtička, Masayuki Igashira, L. Tavora, C. Eleftheriadis, R. Ferreira-Marques, T. Martinez, Ralf Plag, Thomas Rauscher, R. Vlastou, E. Berthoumieux, D. Karadimos, S. David, G. Tagliente, Carlos Guerrero, A. Plukis, Heinz Oberhummer, G. Cortes, P. Rullhusen, I. Savvidis, Marco Calviani, J. Andrzejewski, M. C. Vincente, I. Duran, M. Rosetti, F. Voss, Christoph A. Stephan, A. Herrera-Martinez, N. Patronis, W.I. Furman, R. C. Haight, F. Gramegna, P. Pavlopoulos, Roberto Capote, E. Kossionides, J. Marganiec, J. Salgado, Arnaud Ferrari, U. Abbondanno, S. Andriamonje, A. Poch, Alberto Mengoni, A. J. M. Plompen, K. Fujii, Javier Praena, E. Chiaveri, C. A. Papachristodoulou, G. Aerts, P. F. Mastinu, G. Vannini, G. Rudolf, I. Lopes, C. Paradela, P. E. Koehler, L. Sarchiapone, M. Meaze, M. Dahlfors, F. Käppeler, H. Álvarez, P. Vaz, C. Lamboudis, J. L. Tain, F. Belloni, D. Cano-Ott, P. Cennini, Aaron Couture, D. Villamarin, James L. Cox, J. Pancin, Michael Heil, Manuel Lozano, A. Pavlik, C. Domingo-Pardo, C. T. Papadopoulos, V. Chepel, C. Rubbia, S. Lukic, Y. Kadi, Isabel S. Gonçalves, A. Goverdovski, C. Pretel, S. Marrone, F. Alvarez-Velarde, K. Wisshak, M. Kerveno, M. Mosconi, Corrie S. Moreau, M. Embid-Segura, Gerald Badurek, P. Baumann, S. O'Brien, L. Perrot, S. Walter, A. Lindote, D. Karamanis, Michael Wiescher, R. Terlizzi, Nicola Colonna, Vasilis Vlachoudis, Marco T. Pigni, I. Dillmann, F. Gunsing, Cristian Massimi, C. Carrapiço, E. Gonzalez-Romero, F. Calviño, H. Leeb, Rene Reifarth, J. M. Quesada, L. Tassan-Got, B. Haas, C. Santos, F. Bečvář, W. Dridi, A. Ventura, L. Audouin, F. Neves, P. M. Milazzo, E. Jericha, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), nTOF, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Range (particle radiation), Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, Fission, Physics::Instrumentation and Detectors, Hadron, Flux, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Ionization chamber, Nuclear fusion, Neutron, 010306 general physics, Nuclear Experiment
Abstract: The neutron-induced fission cross-section of 233U has been measured at the CERN n_TOF facility relative to the standard fission cross-section of 235U between 0.5 and 20MeV. The experiment was performed with a fast ionization chamber for the detection of the fission fragments and to discriminate against $ \alpha$ -particles from the natural radioactivity of the samples. The high instantaneous flux and the low background of the n_TOF facility result in data with uncertainties of $ \approx$ 3% , which were found in good agreement with previous experiments. The high quality of the present results allows to improve the evaluation of the 233U (n,f) cross-section and, consequently, the design of energy systems based on the Th/U cycle.
Published: 2011
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82. Study of Photon Strength Function of Actinides: the Case of 235U, 238Np and 241Pu

Author: M. Mosconi, A. Goverdovski, S. O'Brien, F. Alvarez-Velarde, I. Dillman, Gerald Badurek, R. Terlizzi, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, Marco Calviani, Christoph A. Stephan, S. Walter, D. Karamanis, R. Dolfini, Ralf Plag, J. Salgado, W.I. Furman, M. Kerveno, L. Tavora, C. A. Papachristodoulou, A. Poch, M. C. Vicente, E. Kossionides, J. Pancin, P. Rullhusen, N. Colonna, Thomas Rauscher, S. Isaev, A. Herrera-Martinez, N. Patronis, Javier Praena, M. Dahlfors, F. Neves, P. M. Milazzo, D. Karadimos, P. Vaz, C. Eleftheriadis, I. Duran, I. Savvidis, Rene Reifarth, D. Cano-Ott, E. Gonzalez-Romero, G. Aerts, Y. Kadi, Aaron Couture, P. Pavlopoulos, A. Mengoni, H. Álvarez, S. David, H. Frais-Koelbl, J. L. Tain, V. Ketlerov, C. Lampoudis, G. Tagliente, A. Plukis, A. Pavlik, Manuel Lozano, C. Domingo-Pardo, A. Carrillo de Albornoz, L. Ferrant, Martin Heil, J. M. Quesada, J. Marganiec, R. C. Haight, C. T. Papadopoulos, S. Andriamonje, L. Tassan-Got, C. Paradela, L. Sarchiapone, M. Meaze, R. Vlastou, E. Jericha, C. Rubbia, T. Martiez, C. Pretel, E. Berthoumieux, E. Chiaveri, M. Rosetti, P. F. Mastinu, Isabel S. Gonçalves, L. Audouin, S. Marrone, P. E. Koehler, E. Mendoza, Michael Wiescher, K. Fujii, M. Krtička, B. Haas, D. Villamarin, R. Ferreira-Marques, Marco T. Pigni, Anthony Ferrari, L. Marques, E. Griesmayer, Fabio Belloni, L. Perrot, F. Käppeler, V. Chepel, G. Rudolf, P. Baumann, W. Dridi, Masayuki Igashira, A. Ventura, K. Wisshak, Isabel Lopes, Corrie S. Moreau, A. J. M. Plompen, H. Wendler, S. Lukic, James L. Cox, F. Calviño, F. Voss, H. Leeb, F. Becvar, Vasilis Vlachoudis, F. Gramegna, F. Gunsing, Cristian Massimi, G. Cortes, Roberto Capote, P.A. Assimakopoulos, G. Vannini, M. Oshima, J. Andrzejewski, V. Konovalov, A. Lindote, P. Cennini, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, Guerrero C., Alvarez-Velarde F., Cano-Ott D., Martiez T., Mendoza E., Villamarin D., Colonna N., H. Meaze M., Marrone S., Tagliente G., Terlizzi R., Belloni F., Abbondanno U., Fujii K., M. Milazzo P., Moreau C., Aerts G., Berthoumieux E., Dridi W., Gunsing F., Pancin J., Perrot L., Plukis A., Alvarez H., Duran I., Paradela C., Andriamonje S., Calviani M., Chiaveri E., Gonzalez-Romero E., Kadi Y., C. Vicente M., Vlachoudis V., Andrzejewski J., Marganiec J., Assimakopoulos P., Karadimos D., Karamanis D., Papachristodoulou C., Patronis N., Audouin L., David S., Ferrant L., Isaev S., Stephan C., Tassan-Got L., Badurek G., Jericha E., Leeb H., Oberhummer H., T. Pigni M., Baumann P., Kerveno M., Lukic S., Rudolf G., Becvar F., Krticka M., Calvino F., Capote R., Carrillo De Albornoz A., Marques L., Salgado J., Tavora L., Vaz P., Cennini P., Dahlfors M., Ferrari A., Gramegna F., Herrera-Martinez A., Mastinu P., Praena J., Sarchiapone L., Wendler H., Chepel V., Ferreira-Marques R., Goncalves I., Lindote A., Lopes I., Neves F., Cortes G., Poch A., Pretel C., Couture A., Cox J., Obrien S., Wiescher M., Dillman I., Kappeler F., Mosconi M., Plag R., Voss F., Walter S., Wisshak K., Dolfini R., Rubbia C., Domingo-Pardo C., L. Tain J., Eleftheriadis C., Savvidis I., Frais-Koelbl H., Griesmayer E., Furman W., Konovalov V., Goverdovski A., Ketlerov V., Haas B., Haight R., Reifarth R., Heil M., Igashira M., Koehler P., Kossionides E., Lampoudis C., Lozano M., Quesada J., Massimi C., Vannini G., Mengoni A., Oshima M., Papadopoulos C., Vlastou R., Pavlik A., Pavlopoulos P., Plompen A., Rullhusen P., Rauscher T., Rosetti M., Ventura A., Département d'Electronique, des Détecteurs et d'Informatique pour la Physique (ex SEDI) (DEDIP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aval du cycle et Energie Nucléaire (ACEN), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), TOF, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Work (thermodynamics), Photon, 010308 nuclear & particles physics, General Physics and Astronomy, radiative capture cross section, Actinide, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], NEUTRON INDUCED REACTIONS, Electromagnetisme, 01 natural sciences, Spectral line, Nuclear physics, Neutron capture, Electromagnetism, Excited state, 0103 physical sciences, Photon Strength Function, Atomic physics, 010306 general physics, Absorption (electromagnetic radiation), Nuclear Experiment, Energy (signal processing)
Abstract: The decay from excited levels in medium and heavy nuclei can be described in a statistical approach by means of Photon Strength Functions and Level Density distributions. The study of electromagnetic cascades following neutron capture based on the use of high e ciency detectors has been shown to be well suited for probing the properties of the Photon Strength Function of heavy (high level density) and/or radioactive (high background) nuclei. In this work we have investigated for the rst time the validity of the recommended PSF of actinides, in particular 235U, 238Np and 241Pu. Our study includes the search for resonance structures in the PSF below Sn and draws conclusions regarding their existence and their characteristics in terms of energy, width and electromagnetic nature.
Published: 2011
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83. Quantum Zeno effect with neutron spin

Author: Helmut Rauch, Mikio Namiki, Gerald Badurek, and Saverio Pascazio
Subjects: Physics, Quantum discord, Open quantum system, Quantum dynamics, Quantum mechanics, Quantum process, Quantum system, General Physics and Astronomy, Wave function collapse, Quantum dissipation, Quantum Zeno effect
Abstract: The meaning and occurrence of quantum Zeno effects is discussed by making use of a simple experimental proposal involving neutron spins. The role of quantum measurements and “collapse of the wave function” is investigated and clarified. It is argued that in some cases a quantum Zeno phenomenon is a natural consequence of the evolution of a quantum system. A detailed experimental scheme is given for an experimental verification.
Published: 1993
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84. Nondispersive phase of the Aharonov-Bohm effect

Author: Achim Kollmar, Harald Weinfurter, Gerald Badurek, Roland Gähler, Anton Zeilinger, and Stefan Wehinger
Subjects: Physics, Scalar (mathematics), Phase (waves), General Physics and Astronomy, Quantum Physics, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Coherence length, symbols.namesake, Wavelength, Quantum mechanics, Quantum electrodynamics, symbols, Neutron, Limit (mathematics), Aharonov–Bohm effect, Spin-½
Abstract: An essential signature of the topological nature of all Aharonov-Bohm type phases is that they are nondispersive, i.e., independent of the velocity (wavelength) of the interfering particles. This implies that an Aharonov-Bohm phase shift can greatly exceed the usual limit given by the coherence length of the interfering beams. We report the results of a polarized neutron experiment demonstrating this property for a spin-rotation analog of the scalar Aharonov-Bohm effect.
Published: 1993
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85. Astrophysical Implications of the $^{139}$La$(n,\gamma)$ and $^{151}$Sm$(n,\gamma)$ Cross Sections Measured at $n_{\rm TOF}$

Author: E. Griesmayer, A. J. M. Plompen, P. Cennini, S. Walter, J. Salgado, A. Poch, N. Colonna, S. David, G. Cortes, G. Tagliente, E. Jericha, Ralf Plag, James L. Cox, L. Sarchiapone, Rene Reifarth, Masayuki Igashira, F. Voss, L. Ferrant, M. Dahlfors, F. Becvar, Andrea Venturi, I. Savvidis, M. Mosconi, Corrie S. Moreau, J. Pancin, C. Rubbia, L. Fitzpatrick, G. Aerts, P. Vaz, A. Plukis, C. Stephan, F. Gunsing, P. E. Koehler, S. O'Brien, Isabel S. Gonçalves, M. Oshima, Vasilis Vlachoudis, H. Alvarez-Pol, M. Embid-Segura, F. Gramegna, Carlos Guerrero, Aaron Couture, Roberto Capote, J. Andrzejewski, U. Abbondanno, P.A. Assimakopoulos, Heinz Oberhummer, M. Krtička, D. Villamarin, M. C. Vincente, A. Herrera-Martinez, Y. Kadi, H. Frais-Koelbl, R. Terlizzi, Costas G. Papadopoulos, Roberto Gallino, R. Ferreira Marques, Michael Heil, C. Lamboudis, J. L. Tain, G. Vannini, J. M. Quesada, L. Tassan-Got, M. Rosetti, Isabel Lopes, Alberto Mengoni, W.I. Furman, I. Duran, Robert C. Haight, C. A. Papachristodoulou, E. Kossionides, Stefano Marrone, A. Pavlik, C. Domingo-Pardo, V. Konovalov, D. Cano-Ott, M. Kerveno, Manuel Lozano, S. Andriamonje, S. Lukic, P. Pavlopoulos, E. Chiaveri, P. F. Mastinu, F. Neves, P. M. Milazzo, S. Isaev, Marco Pignatari, V. Ketlerov, J. Marganiec, C. Paradela, L. Audouin, Wiescher Michael, C. Eleftheriadis, F. Calviño, H. Leeb, Thomas Rauscher, D. Karadimos, A. Ferrari, K. Wisshak, R. Vlastou, E. Berthoumieux, E. González-Romero, B. Haas, H. Wendler, Iris Dillmann, W. Dridi, C. Carrapiço, D. Karamanis, N. Patronis, A. Lindote, A. Goverdovski, F. Alvarez-Velarde, Gerald Badurek, R. Dolfini, F. Käppeler, L. Perrot, V. Chepel, G. Rudolf, P. Baumann, C. Pretel, K. Fujii, L. Tavora, and P. Rullhusen
Published: 2010
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86. Neutron cross sections at n_TOF

Author: M. Oshima, J. Andrzejewski, J. Pancin, A. Pavlik, S. Lukic, G. Cortes, B. Haas, Y. Kadi, I. Duran, Iris Dillmann, Costas G. Papadopoulos, H. Frais-Koelbl, V. Konovalov, M. Dahlfors, L. Perrot, C. Eleftheriadis, P. Vaz, K. Fujii, C. Carrapiço, Aaron Couture, F. Voss, J. Salgado, A. Poch, F. Becvar, I. Savvidis, P. Cennini, Thomas Rauscher, Roberto Capote, P.A. Assimakopoulos, W. Dridi, A. Goverdovski, Rene Reifarth, Isabel Lopes, F. Calviño, H. Leeb, Nicola Colonna, M. Embid-Segura, L. Ferrant, E. Griesmayer, G. Aerts, A. Plukis, F. Alvarez-Velarde, Vasilis Vlachoudis, H. Alvarez-Pol, L. Sarchiapone, D. Karadimos, F. Gramegna, Wiescher Michael, L. Fitzpatrick, Manuel Lozano, D. Karamanis, E. González-Romero, G. Vannini, K. Wisshak, Sara Bisterzo, R. Vlastou, Gerald Badurek, N. Patronis, J. M. Quesada, S. Andriamonje, L. Tassan-Got, E. Berthoumieux, A. Herrera-Martinez, R. Dolfini, E. Jericha, D. Villamarin, E. Chiaveri, M. Rosetti, M. C. Vincente, Arnaud Ferrari, R. Ferreira Marques, P. F. Mastinu, H. Wendler, S. David, M. Mosconi, Alberto Mengoni, C. Stephan, F. Gunsing, G. Tagliente, D. Cano-Ott, S. Isaev, S. O'Brien, V. Ketlerov, M. Krtička, P. E. Koehler, V. Chepel, G. Rudolf, F. Käppeler, Roberto Gallino, César Domingo Pardo, R. Terlizzi, C. Paradela, F. Neves, P. M. Milazzo, L. Audouin, P. Pavlopoulos, L. Tavora, J. Marganiec, P. Rullhusen, P. Baumann, C. Pretel, Masayuki Igashira, E. Kossionides, A. Lindote, Michael Heil, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, A. J. M. Plompen, S. Walter, Ralf Plag, James L. Cox, W.I. Furman, C. A. Papachristodoulou, Andrea Venturi, Corrie S. Moreau, M. Kerveno, C. Rubbia, Isabel S. Gonçalves, S. Marrone, C. Lamboudis, J. L. Tain, and Robert C. Haight
Subjects: Nuclear physics, Astrophysics and Astronomy, Materials science, Neutron
Published: 2010
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87. Neutron-induced fission cross section ofU234andNp237measured at the CERN Neutron Time-of-Flight (n_TOF) facility

Author: J. Pancin, E. Chiaveri, D. Cano-Ott, V. Chepel, P. Baumann, C. Moreau, L. Perrot, B. Berthier, C. Carrapiço, G. Aerts, M. Dahlfors, L. Tavora, W.I. Furman, P. Vaz, Michael Heil, C. Le Naour, E. Gonzalez-Romero, E. Kossionides, Alberto Ventura, Aaron Couture, Javier Praena, M. Embid-Segura, A. Lindote, C. A. Papachristodoulou, S. David, D. Karamanis, Manuel Lozano, P. E. Koehler, W. Dridi, A. Plukis, L. Ferrant, C. Lampoudis, A. Pavlik, P. Rullhusen, G. Tagliente, S. Walter, C. Domingo-Pardo, C. Santos, Ralf Plag, Marco Calviani, F. Gramegna, S. Marrone, F. Bečvář, P. Cennini, H. Álvarez, Carlos Guerrero, U. Abbondanno, I. Savvidis, J. L. Tain, Iris Dillmann, Alfredo Ferrari, R. Ferreira-Marques, E. Jericha, M. Mosconi, F. Alvarez-Velarde, Heinz Oberhummer, R. Vlastou, J. Marganiec, S. Andriamonje, J. Salgado, M. Kerveno, Gerald Badurek, C. Papadopoulos, C. Stephan, R. C. Haight, A. Poch, I. Goncalves, K. Fujii, M. C. Vincente, R. Terlizzi, Thomas Rauscher, P. F. Mastinu, P. Assimakopoulos, D. Karadimos, S. O'Brien, I. Duran, L. Audouin, Rene Reifarth, A. Herrera-Martinez, N. Patronis, S. Isaev, M. Krtička, F. Calviño, T. Martinez, P. Pavlopoulos, Alberto Mengoni, L. Sarchiapone, J. M. Quesada, Michael Wiescher, F. Käppeler, J. Cox, M. Igashira, E. Berthoumieux, Laurent Tassan-Got, C. Eleftheriadis, C. Pretel, Yacine Kadi, D. Villamarin, Marco T. Pigni, F. Voss, Nicola Colonna, H. Leeb, A. J. M. Plompen, C. Paradela, G. Rudolf, I. Lopes, S. Lukic, B. Haas, G. Vannini, F. Gunsing, P. M. Milazzo, D. Trubert, Cristian Massimi, M. Oshima, J. Andrzejewski, Carlo Rubbia, G. Cortes, D. Tarrío, V. Vlachoudis, Roberto Capote, F. Neves, and K. Wisshak
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Isotopes of uranium, 010308 nuclear & particles physics, Fission, Hadron, 01 natural sciences, Nuclear physics, Time of flight, Cross section (physics), 0103 physical sciences, Neutron, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: A high-resolution measurement of the neutron-induced fission cross section of U234 and Np237 has been performed at the CERN Neutron Time-of-Flight facility. The cross sections have been determined in a wide energy range from 1 eV to 1 GeV using the evaluated U235 cross section as reference. In these measurements the energy determination for the U234 resonances could be improved, whereas previous discrepancies for the Np237 resonances were confirmed. New cross-section data are provided for high neutron energies that go beyond the limits of prior evaluations, obtaining important differences in the case of Np237. © 2010 The American Physical Society.
Published: 2010
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88. Neutron physics of the Re/Os clock. III. Resonance analyses and stellar (n,γ) cross sections ofOs186,187,188

Author: D. Karamanis, I. Dillmann, V. Chepel, M. Kerveno, G. Rudolf, D. Villamarin, F. Gramegna, B. Haas, L. Tavora, M. Dahlfors, P. Pavlopoulos, R. Vlastou, E. Berthoumieux, P. Vaz, P. Baumann, E. Gonzalez-Romero, Marco Calviani, A. Lindote, J. Salgado, A. Poch, F. Bečvář, P. Rullhusen, W. Dridi, M. Oshima, A. Plukis, M. Embid-Segura, G. Cortes, F. Gunsing, Aaron Couture, Rene Reifarth, Sara Bisterzo, K. Fujii, J. Andrzejewski, L. Ferrant, J. Marganiec, M. C. Vincente, J. M. Quesada, L. Tassan-Got, A. Herrera-Martinez, N. Patronis, A. Goverdovski, F. Alvarez-Velarde, S. Andriamonje, E. Chiaveri, G. Aerts, Cristian Massimi, C. Eleftheriadis, L. Fitzpatrick, A. Pavlik, P. F. Mastinu, Gerald Badurek, Arnaud Ferrari, P. Cennini, Fabio Belloni, C. Domingo-Pardo, R. C. Haight, Christoph A. Stephan, R. Dolfini, C. T. Papadopoulos, S. Lukic, C. Paradela, Roberto Capote, M. Mosconi, L. Sarchiapone, L. Audouin, Thomas Rauscher, A. Ventura, P.A. Assimakopoulos, S. O'Brien, C. Rubbia, J. Pancin, V. Konovalov, R. Terlizzi, E. Griesmayer, M. Krtička, G. Vannini, H. Leeb, C. Pretel, Manuel Lozano, Isabel S. Gonçalves, F. Calviño, Y. Kadi, Michael Wiescher, F. Voss, H. Frais-Koelbl, D. Karadimos, L. Marques, S. Marrone, S. David, G. Tagliente, E. Jericha, R. Ferreira-Marques, Nicola Colonna, K. Wisshak, Vasilis Vlachoudis, H. Alvarez-Pol, S. Isaev, C. Lamboudis, J. L. Tain, P. E. Koehler, H. Wendler, L. Perrot, F. Käppeler, M. Rosetti, I. Duran, I. Savvidis, A. Mengoni, V. Ketlerov, A. Carrillo de Albornoz, W.I. Furman, C. A. Papachristodoulou, Carlos Guerrero, U. Abbondanno, F. Neves, Heinz Oberhummer, P. M. Milazzo, S. Walter, Ralf Plag, R. Gallino, Michael Heil, D. Cano-Ott, E. Kossionides, Corrie S. Moreau, Javier Praena, A. J. M. Plompen, I. Lopes, James L. Cox, and Masayuki Igashira
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Resonance, 01 natural sciences, 7. Clean energy, Nuclear physics, Neutron capture, 13. Climate action, Nucleosynthesis, 0103 physical sciences, Neutron, Nucleon, s-process, 010303 astronomy & astrophysics, Stellar evolution
Abstract: Neutron resonance analyses have been performed for the capture cross sections of Os-186, Os-187, and Os-188 measured at the n_TOF facility at CERN. Resonance parameters have been extracted up to 5, 3, and 8 keV, respectively, using the SAMMY code for a full R-matrix fit of the capture yields. From these results average resonance parameters were derived by a statistical analysis to provide a comprehensive experimental basis for modeling of the stellar neutron capture rates of these isotopes in terms of the Hauser-Feshbach statistical model. Consistent calculations for the capture and inelastic reaction channels are crucial for the evaluation of stellar enhancement factors to correct the Maxwellian averaged cross sections obtained from experimental data for the effect of thermally populated excited states. These factors have been calculated for the full temperature range of current scenarios of s-process nucleosynthesis using the combined information of the experimental data in the region of resolved resonances and in the continuum. The consequences of this analysis for the s-process component of the Os-187 abundance and the related impact on the evaluation of the time duration of galactic nucleosynthesis via the Re/Os cosmochronometer are discussed.
Published: 2010
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89. TheZr92(n,γ) reaction and its implications for stellar nucleosynthesis

Author: D. Villamarin, J. Andrzejewski, Marco T. Pigni, Rene Reifarth, Carlo Rubbia, V. Vlachoudis, E. Jericha, J. Marganiec, S. Andriamonje, I. Savvidis, P. Pavlopoulos, L. Tavora, J. M. Quesada, E. Kossionides, F. Bečvář, P. F. Mastinu, M. Calviani, J. Pancin, P. Rullhusen, E. Chiaveri, D. Cano-Ott, Javier Praena, F. Gunsing, F. Alvarez-Velarde, S. David, G. Tagliente, M. C. Vincente, M. Kerveno, Gerald Badurek, Alfredo Ferrari, R. Ferreira-Marques, G. Cortes, L. Sarchiapone, Sara Bisterzo, C. Eleftheriadis, P. Cennini, A. Herrera-Martinez, N. Patronis, P. M. Milazzo, M. Krtička, F. Calviño, J. Cox, R. Gallino, Yacine Kadi, Alberto Mengoni, T. Martinez, R. C. Haight, D. Karamanis, U. Abbondanno, Laurent Tassan-Got, Michael Heil, M. Mosconi, M. Igashira, L. Perrot, L. Audouin, C. Stephan, S. O'Brien, J. Salgado, A. Poch, C. Santos, B. Haas, C. T. Papadopoulos, Michael Wiescher, R. Terlizzi, R. Vlastou, C. Pretel, E. Berthoumieux, E. Gonzalez-Romero, H. Leeb, A. Plukis, W. Dridi, F. Gramegna, Roberto Capote, Ralf Plag, I. Goncalves, S. Walter, I. Duran, F. Neves, Thomas Rauscher, K. Wisshak, C. Moreau, F. Käppeler, C. Carrapiço, S. Marrone, C. Massimi, G. Vannini, V. Chepel, C. Paradela, K. Fujii, S. Lukic, P. Baumann, H. Álvarez, C. Lamboudis, J. L. Tain, D. Karadimos, H. Wendler, Fabio Belloni, F. Voss, Carlos Guerrero, Heinz Oberhummer, Nicola Colonna, W.I. Furman, A. Lindote, C. A. Papachristodoulou, A. J. M. Plompen, M. Rosetti, G. Rudolf, I. Lopes, G. Aerts, I. Dillmann, A. Pavlik, C. Domingo-Pardo, M. Dahlfors, P. Vaz, Alberto Ventura, Aaron Couture, M. Embid-Segura, and Manuel Lozano
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, 7. Clean energy, 01 natural sciences, Neutron temperature, Nuclear physics, Neutron capture, Stellar nucleosynthesis, Nucleosynthesis, 0103 physical sciences, Isotopes of zirconium, Neutron, Nuclear Experiment, s-process, 010303 astronomy & astrophysics
Abstract: Because the relatively small neutron capture cross sections of the zirconium isotopes are difficult to measure, the results of previous measurements are often not adequate for a number of problems in astrophysics and nuclear technology. Therefore, the Zr-92(n,gamma) cross section has been remeasured at the CERN n_TOF facility, providing a set of improved parameters for 44 resonances in the neutron energy range up to 40 keV. With this information the cross-section uncertainties in the keV region could be reduced to 5% as required for s-process nucleosynthesis studies and technological applications.
Published: 2010
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90. Au197(n,γ) cross section in the resonance region

Author: L. Tavora, S. David, A. Herrera-Martinez, P. Rullhusen, G. Tagliente, G. Aerts, Alberto Mengoni, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, M. Igashira, J. Cox, M. Dahlfors, Georgios Perdikakis, P. Vaz, Laurent Tassan-Got, E. Kossionides, F. Bečvář, Alberto Ventura, Aaron Couture, A. J. M. Plompen, E. Mendoza, G. Rudolf, I. Lopes, P. Cennini, A. Poch, Javier Praena, M. Krtička, F. Calviño, T. Martinez, L. Perrot, M. Mosconi, D. Karamanis, I. Dillmann, C. Stephan, S. O'Brien, L. Ferrant, R. Terlizzi, J. Pancin, E. Chiaveri, V. Chepel, D. Cano-Ott, Carlos Guerrero, G. Vannini, I. Savvidis, C. Lederer, C. Massimi, Heinz Oberhummer, P. Baumann, R. Sarmento, Alfredo Ferrari, R. Ferreira-Marques, F. Käppeler, M. Rosetti, P. E. Koehler, H. Leeb, F. Gramegna, Ralf Plag, G. Cortes, Michael Heil, F. Alvarez-Velarde, F. Voss, I. Duran, Manuel Lozano, Gerald Badurek, M. Calviani, L. Sarchiapone, C. Carrapiço, I. Goncalves, W.I. Furman, F. Gunsing, Roberto Capote, P.A. Assimakopoulos, C. Moreau, Thomas Rauscher, F. Neves, A. Lindote, E. Jericha, D. Karadimos, K. Fujii, K. Wisshak, R. Vlastou, Nicola Colonna, Fabio Belloni, S. Walter, C. Pretel, B. Haas, C. Paradela, S. Lukic, U. Abbondanno, Rene Reifarth, P. Pavlopoulos, E. Berthoumieux, J. M. Quesada, J. Andrzejewski, Carlo Rubbia, V. Vlachoudis, R. C. Haight, P. M. Milazzo, L. Audouin, Michael Wiescher, J. Marganiec, S. Andriamonje, C. Eleftheriadis, P. F. Mastinu, E. Gonzalez-Romero, A. Plukis, Yacine Kadi, C. T. Papadopoulos, D. Villamarin, Marco T. Pigni, W. Dridi, S. Galanopoulos, S. Marrone, M. Kerveno, H. Álvarez, and J. L. Tain
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Resolution (electron density), Gamma ray, Resonance, 01 natural sciences, 7. Clean energy, Spectral line, Neutron spectroscopy, Cross section (physics), 0103 physical sciences, Atomic physics, 010306 general physics, Absorption (electromagnetic radiation)
Abstract: The (n,γ) cross section of Au197 has been measured at n-TOF in the resolved resonance region, up to 5keV, with the aim of improving the accuracy in an energy range where it is not yet considered standard. The measurements were performed with two different experimental setup and detection techniques, the total energy method based on C6D6 detectors, and the total absorption calorimetry based on a 4π BaF2 array. By comparing the data collected with the two techniques, two accurate sets of neutron-capture yields have been obtained, which could be the basis for a new evaluation leading to an extended cross-section standard. Overall good agreement is found between the n-TOF results and evaluated cross sections, with some significant exceptions for small resonances. A few resonances not included in the existing databases have also been observed. © 2010 The American Physical Society.
Published: 2010
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91. Engineering of triply entangled states in a single-neutron system

Author: Gerald Badurek, K. Durstberger-Rennhofer, Stephan Sponar, Yuji Hasegawa, Helmut Rauch, and Rudolf Loidl
Subjects: Physics, Quantum Physics, Degrees of freedom (physics and chemistry), FOS: Physical sciences, Elementary particle, Quantum entanglement, State (functional analysis), 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, Quantum mechanics, 0103 physical sciences, Quantum Physics (quant-ph), 010306 general physics, Spin (physics), Nucleon, Quantum contextuality, Quantum
Abstract: We implemented a triply entangled Greenberger-Horne-Zeilinger(GHZ)-like state and coherently manipulated the spin, path, and energy degrees of freedom in a single neutron system. The GHZ-like state was analyzed with an inequality derived by Mermin: we determined the four expectation values and finally obtained M = 2.558 +/- 0.004 > 2, which exhibits a clear violation of the noncontextual assumption and confirms quantum contextuality., 4 pages, 2figures
Published: 2010
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92. Astrophysics at n-TOF facility at CERN

Author: G. Vannini, L. Perrot, Alfredo Ferrari, R. Ferreira-Marques, J. Salgado, A. Poch, P. E. Koehler, I. Goncalves, L. Tavora, Ralf Plag, Thomas Rauscher, M. Embid-Segura, E. Jericha, R. Vlastou, I. Duran, Sara Bisterzo, M. Kerveno, M. Krtička, F. Calviño, A. Herrera-Martinez, N. Patronis, C. Santos, E. Kossionides, Manuel Lozano, D. Karadimos, C. Pretel, W.I. Furman, V. Chepel, P. Rullhusen, J. Cox, T. Martinez, Javier Praena, F. Bečvář, Rene Reifarth, P. Baumann, I. Dillman, G. Aerts, Masayuki Igashira, Laurent Tassan-Got, A. Lindote, S. David, K. Fujii, Marco Calviani, P. Pavlopoulos, G. Cortes, G. Tagliente, P. Cennini, J. M. Quesada, S. Walter, A. J. M. Plompen, R. Gallino, C. Carrapiço, C Papadopoulos, E. Berthoumieux, Alberto Mengoni, G. Rudolf, I. Lopes, M. Mosconi, E. Gonzalez-Romero, Fabio Belloni, B. Haas, P. M. Milazzo, Michael Heil, F. Alvarez-Velarde, C. Stephan, L. Sarchiapone, Roberto Capote, R. Terlizzi, Gerald Badurek, A. Plukis, F. Neves, W. Dridi, Carlos Guerrero, D. Karamanis, S. Marrone, F. Gramegna, H. Álvarez, Heinz Oberhummer, J. L. Tain, J. Marganiec, S. Andriamonje, I. Savvidis, J. Andrzejewski, Carlo Rubbia, V. Vlachoudis, P. F. Mastinu, M. C. Vincente, C. Papachristodoulou, U. Abbondanno, J. Pancin, E. Chiaveri, D. Cano-Ott, R. C. Haight, M. Dahlfors, L. Audouin, Michael Wiescher, P. Vaz, D. Villamarin, Marco T. Pigni, Alberto Ventura, Aaron Couture, A. Pavlik, C. Domingo-Pardo, C. Eleftheriadis, C. Paradela, S. Lukic, Yacine Kadi, F. Käppeler, F. Voss, Nicola Colonna, H. Leeb, K. Wisshak, H. Wendler, F. Gunsing, Cristian Massimi, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, G Tagliente, U Abbondanno, G Aert, H Alvarez, F Alvarez-Velarde, S Andriamonje, J Andrzejewski, L Audouin, G Badurek, P Baumann, F Bečvář, F Belloni, E Berthoumieux, S Bisterzo, F Calviño, M Calviani, D Cano-Ott, R Capote, C Carrapiço, P Cennini, V Chepel, E Chiaveri, N Colonna, G Corte, A Couture, J Cox, M Dahlfor, S David, I Dillman, C Domingo-Pardo, W Dridi, I Duran, C Eleftheriadi, M Embid-Segura, A Ferrari, R Ferreira-Marque, K Fujii, W Furman, R Gallino, I Goncalve, E Gonzalez-Romero, F Gramegna, C Guerrero, F Gunsing, B Haa, R Haight, M Heil, A Herrera-Martinez, M Igashira, E Jericha, F Käppeler, Y Kadi, D Karadimo, D Karamani, M Kerveno, P Koehler, E Kossionide, M Krtička, H Leeb, A Lindote, I Lope, M Lozano, S Lukic, J Marganiec, S Marrone, T Martinez, C Massimi, P Mastinu, A Mengoni, P M Milazzo, M Mosconi, F Neve, H Oberhummer, J Pancin, C Papachristodoulou, C Papadopoulo, C Paradela, N Patroni, A Pavlik, P Pavlopoulo, L Perrot, M T Pigni, R Plag, A Plompen, A Pluki, A Poch, J Praena, C Pretel, J Quesada, T Rauscher, R Reifarth, C Rubbia, G Rudolf, P Rullhusen, J Salgado, C Santo, L Sarchiapone, I Savvidi, C Stephan, J L Tain, L Tassan-Got, L Tavora, R Terlizzi, G Vannini, P Vaz, A Ventura, D Villamarin, M C Vincente, V Vlachoudi, R Vlastou, F Vo, S Walter, H Wendler, M Wiescher, and K Wisshak
Subjects: s proce, Nuclear reaction, History, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Nuclear physics, Astrophysics, Education, CERN, Neutron cross section, Nuclear astrophysics, Neutron, Spallation, n_TOF, Nuclear Experiment, Physics, Neutrons, Energies::Energia nuclear [Àrees temàtiques de la UPC], Física [Àrees temàtiques de la UPC], nucleosynthesis, Computer Science Applications, Neutron source, Physics::Accelerator Physics, Física nuclear, s-process, Nucleosynthesis, Spallation Neutron Source
Abstract: The neutron time of flight (n_TOF) facility at CERN is a spallation neutron source with white neutron energy spectrum (from thermal to several GeV), covering the full energy range of interest for nuclear astrophysics, in particular for measurements of the neutron capture cross section required in s-process nucleosynthesis. This contribution presents an overview on the astrophysical program carried on at the n_TOF facility, the main results and their implications.
Published: 2010

93. New Aspects of Geometric Phases in Experiments with polarized Neutrons

Author: K. Durstberger-Rennhofer, Gerald Badurek, Jürgen Klepp, Stephan Sponar, Rudolf Loidl, Stefan Filipp, Matthias Lettner, Reinhold A. Bertlmann, Helmut Rauch, and Yuji Hasegawa
Subjects: Statistics and Probability, Physics, Quantum Physics, General Physics and Astronomy, FOS: Physical sciences, Statistical and Nonlinear Physics, Polarimeter, Quantum phases, Radiation, 01 natural sciences, 010305 fluids & plasmas, Magnetic field, Interferometry, symbols.namesake, Geometric phase, Modeling and Simulation, Quantum mechanics, 0103 physical sciences, symbols, Neutron, 010306 general physics, Hamiltonian (quantum mechanics), Quantum Physics (quant-ph), Mathematical Physics
Abstract: Geometric phase phenomena in single neutrons have been observed in polarimeter and interferometer experiments. Interacting with static and time dependent magnetic fields, the state vectors acquire a geometric phase tied to the evolution within spin subspace. In a polarimeter experiment the non-additivity of quantum phases for mixed spin input states is observed. In a Si perfect-crystal interferometer experiment appearance of geometric phases, induced by interaction with an oscillating magnetic field, is verified. The total system is characterized by an entangled state, consisting of neutron and radiation fields, governed by a Jaynes-Cummings Hamiltonian. In addition, the influence of the geometric phase on a Bell measurement, expressed by the Clauser-Horne-Shimony-Holt (CHSH) inequality, is studied. It is demonstrated that the effect of geometric phase can be balanced by an appropriate change of Bell angles., Comment: 17 pages, 9 figures
Published: 2010
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94. Neutron cross-sections for next generation reactors: New data from n_TOF

Author: C. Eleftheriadis, Carlos Guerrero, S. David, L. Tavora, G. Cortes, Alfredo Ferrari, R. Ferreira-Marques, Heinz Oberhummer, G. Tagliente, Yacine Kadi, P. Rullhusen, A. Herrera-Martinez, N. Patronis, L. Perrot, K. Wisshak, D. Villamarin, W.I. Furman, Masayuki Igashira, A. J. M. Plompen, J. Marganiec, S. Andriamonje, V. Chepel, S. Walter, Ralf Plag, S. Lukic, Marco T. Pigni, G. Rudolf, I. Lopes, F. Neves, C. A. Papachristodoulou, P. M. Milazzo, P. Cennini, M. Oshima, H. Wendler, Roberto Capote, E. Kossionides, P. Baumann, P.A. Assimakopoulos, J. Andrzejewski, James L. Cox, J. Salgado, G. Aerts, E. Chiaveri, Carlo Rubbia, P. F. Mastinu, D. Cano-Ott, V. Vlachoudis, M. Mosconi, F. Voss, A. Poch, L. Sarchiapone, I. Duran, F. Becvar, E. Griesmayer, H. Leeb, I. Dillman, C. Stephan, S. O'Brien, A. Carrillo de Albornoz, R. Terlizzi, M. C. Vicente, Marco Calviani, V. Konovalov, F. Käppeler, Nicola Colonna, G. Vannini, Corrie S. Moreau, R. C. Haight, P. E. Koehler, D. Karamanis, E. Jericha, S. Isaev, U. Abbondanno, C. Paradela, F. Gunsing, L. Audouin, E. Gonzalez-Romero, R. Vlastou, Michael Wiescher, A. Plukis, Cristian Massimi, E. Berthoumieux, F. Gramegna, M. Krtička, F. Calviño, T. Martinez, A. Lindote, Rene Reifarth, I. Savvidis, J. M. Quesada, L. Tassan-Got, A. Goverdovski, F. Alvarez-Velarde, Gerald Badurek, R. Dolfini, L. Ferrant, A. Ventura, P. Pavlopoulos, C. Lampoudis, H. Álvarez, A. Pavlik, J. L. Tain, C. Domingo-Pardo, Martin Heil, H. Frais-Koelbl, Manuel Lozano, J. Pancin, B. Haas, M. Dahlfors, P. Vaz, Aaron Couture, C. T. Papadopoulos, W. Dridi, L. Marques, Isabel S. Gonçalves, S. Marrone, M. Kerveno, K. Fujii, Alberto Mengoni, V. Ketlerov, C. Pretel, M. Rosetti, Thomas Rauscher, D. Karadimos, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), TOF, N. Colonna, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, F. Belloni, B. Berthier, E. Berthoumieux, M. Calviani, F. Calviño, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant,†, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. González-Romero, A. Goverdovski, F. Gramegna, E Griesmayer, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Käppeler, Y. Kadi, D. Karadimos, D. Karamanis, V. Ketlerov, M. Kerveno, P. Koehler, V. Konovalov, E. Kossionides, M. Krtička, C. Lampoudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Fission, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Sensitivity and Specificity, Nuclear physics, Data acquisition, Neutron flux, Nuclear Reactors, 0103 physical sciences, Nuclear astrophysics, Neutron, 010306 general physics, Nuclear Experiment, Physics, Neutrons, Radiation, Large Hadron Collider, 010308 nuclear & particles physics, Reproducibility of Results, Equipment Design, Neutron Capture Therapy, NUCLEAR FISSION, Equipment Failure Analysis, 13. Climate action, Nuclear fission, Spallation Neutron Source
Abstract: 7th International Topical Meeting on Industrial Radiation and Radioisotope Measurement Application. Czech Tech univ, Prague, CZECH REPUBLIC. JUN 22-27, 2008, In 2002, an innovative neutron time-of-flight facility started operation at CERN: n_TOF. The main characteristics that make the new facility unique are the high instantaneous neutron flux, high resolution and wide energy range. Combined with state-of-the-art detectors and data acquisition system, these features have allowed to collect high accuracy neutron cross-section data on a variety of isotopes, many of which radioactive, of interest for Nuclear Astrophysics and for applications to advanced reactor technologies. A review of the most important results on capture and fission reactions obtained so far at n_TOF is presented, together with plans for new measurements related to nuclear industry.
Published: 2010
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95. High-accuracyU233(n,f)cross-section measurement at the white-neutron source n_TOF from near-thermal to1MeV neutron energy

Author: B. Berthier, G. Aerts, Michael Heil, A. Lindote, S. David, F. Neves, C. Pretel, G. Tagliente, P. M. Milazzo, C. Santos, K. Fujii, A. Herrera-Martinez, N. Patronis, Fabio Belloni, Arnaud Ferrari, F. Bečvář, L. Perrot, L. Ferrant, M. Dahlfors, P. Cennini, C. Eleftheriadis, Alberto Mengoni, P. Vaz, M. Embid-Segura, E. Kossionides, V. Chepel, G. Vannini, J. Pancin, E. Jericha, G. Rudolf, Thomas Rauscher, Javier Praena, M. Kerveno, J. Salgado, D. Villamarin, P. Baumann, Rene Reifarth, Aaron Couture, D. Karadimos, A. Poch, M. Mosconi, Y. Kadi, Marco T. Pigni, A. J. M. Plompen, Manuel Lozano, D. Cano-Ott, S. O'Brien, C. Lampoudis, A. Pavlik, G. Cortes, A. Goverdovski, F. Alvarez-Velarde, C. Domingo-Pardo, R. Terlizzi, V. Ketlerov, J. M. Quesada, Roberto Capote, Gerald Badurek, P.A. Assimakopoulos, L. Tassan-Got, Marco Calviani, L. Tavora, P. E. Koehler, Masayuki Igashira, M. Rosetti, B. Haas, P. Pavlopoulos, P. Rullhusen, I. Savvidis, I. Lopes, E. Gonzalez-Romero, L. Sarchiapone, W. Dridi, H. Álvarez, J. L. Tain, A. Ventura, C. T. Papadopoulos, M. C. Vincente, I. Duran, A. Plukis, C. Rubbia, Christoph A. Stephan, Isabel S. Gonçalves, S. Marrone, F. Käppeler, James L. Cox, M. Krtička, F. Calviño, R. Vlastou, E. Berthoumieux, R. Ferreira-Marques, T. Martinez, J. Marganiec, S. Andriamonje, Carlos Guerrero, E. Chiaveri, U. Abbondanno, P. F. Mastinu, Heinz Oberhummer, R. C. Haight, C. Paradela, D. Karamanis, I. Dillmann, L. Audouin, Corrie S. Moreau, Michael Wiescher, C. Carrapiço, W.I. Furman, C. A. Papachristodoulou, S. Walter, Ralf Plag, S. Lukic, F. Gunsing, Cristian Massimi, F. Voss, Nicola Colonna, Vasilis Vlachoudis, F. Gramegna, K. Wisshak, J. Andrzejewski, V. Konovalov, and H. Leeb
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Neutron radiation, 7. Clean energy, 01 natural sciences, Neutron temperature, Nuclear physics, Cross section (physics), Neutron flux, 0103 physical sciences, Uranium-235, Neutron source, Neutron, Nuclear Experiment, 010306 general physics
Abstract: The U-233(n, f) cross section has been measured at the white neutron source n_TOF in a wide energy range with a dedicated fission ionization chamber. We report here the results from similar to 30 meV to 1 MeV neutron energy. The U-233(n, f) cross section has been determined relative to a reference sample of U-235(n, f) measured simultaneously with the same detector. The very high instantaneous neutron flux and the intrinsically low background of the n_TOF installation result in an accuracy around 3 range, while the energy resolution of the neutron beam allows for an accurate description of the fission cross section by means of R-matrix analysis over a wide energy range. The results are, in general, in good agreement with the most recent high-accuracy measurement of this fission cross section, over the more limited range of the previous measurements, and indicated that even the latest evaluations underestimate the cross section in the epithermal region. The present high-quality data provide the basis for a more precise evaluation of the U-233 fission cross section and for improving the reliability of databases needed for the design of new energy systems based on the Th/U cycle.
Published: 2009
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96. Geometric Phase in Entangled Systems: A Single-Neutron Interferometer Experiment

Author: Jürgen Klepp, Rudolf Loidl, K. Durstberger-Rennhofer, Gerald Badurek, S. Filipp, Yuji Hasegawa, Stephan Sponar, Reinhold A. Bertlmann, and Helmut Rauch
Subjects: Physics, Quantum Physics, FOS: Physical sciences, CHSH inequality, Quantum entanglement, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, Interferometry, Correlation function, Geometric phase, Quantum mechanics, Quantum electrodynamics, 0103 physical sciences, Quantum Physics (quant-ph), 010306 general physics, Quantum, Neutron interferometer, Spin-½
Abstract: The influence of the geometric phase on a Bell measurement, as proposed by Bertlmann et al. in [Phys. Rev. A 69, 032112 (2004)], and expressed by the Clauser-Horne-Shimony-Holt (CHSH) inequality, has been observed for a spin-path entangled neutron state in an interferometric setup. It is experimentally demonstrated that the effect of geometric phase can be balanced by a change in Bell angles. The geometric phase is acquired during a time dependent interaction with two radio-frequency (rf) fields. Two schemes, polar and azimuthal adjustment of the Bell angles, are realized and analyzed in detail. The former scheme, yields a sinusoidal oscillation of the correlation function S, dependent on the geometric phase, such that it varies in the range between 2 and 2\sqrt{2} and, therefore, always exceeds the boundary value 2 between quantum mechanic and noncontextual theories. The latter scheme results in a constant, maximal violation of the Bell-like-CHSH inequality, where S remains 2\sqrt2 for all settings of the geometric phase., 10 pages 9 figures
Published: 2009

97. Violation of Bell-like Inequality for spin-energy entanglement in neutron polarimetry

Author: Gerald Badurek, Yuji Hasegawa, C. Zeiner, Stephan Sponar, and Jürgen Klepp
Subjects: Physics, Quantum Physics, Inequality, media_common.quotation_subject, Polarimetry, General Physics and Astronomy, CHSH inequality, FOS: Physical sciences, Quantum entanglement, 01 natural sciences, Physics::History of Physics, Standard deviation, 010305 fluids & plasmas, Bell's theorem, Quantum mechanics, 0103 physical sciences, Neutron, High Energy Physics::Experiment, Bell test experiments, 010306 general physics, Quantum Physics (quant-ph), media_common
Abstract: Violation of a Bell-like inequality for a spin-energy entangled neutron state has been confirmed in a polarimetric experiment. The proposed inequality, in Clauser-Horne-Shimony-Holt (CHSH) formalism, relies on correlations between the spin and energy degree of freedom in a single-neutron system. The entangled states are generated utilizing a suitable combination of two radio-frequency fields in a neutron polarimeter setup. The correlation function S is determined to be 2.333+/-0.005, which violates the Bell-like CHSH inequality by more than 66 standard deviations., 4 pages 2 figures
Published: 2009

98. Neutron Capture Measurements at the ṉTOF Facility

Author: W.I. Furman, C. A. Papachristodoulou, F. Alvarez-Velarde, S. Andriamonje, G. Vannini, S. Walter, Ralf Plag, Carlos Guerrero, Gerald Badurek, U. Abbondanno, Heinz Oberhummer, S. David, C. Stephan, F. Gunsing, P. F. Mastinu, G. Tagliente, Cristian Massimi, S. Lukic, D. Cano-Ott, F. Gramegna, R. Vlastou, E. Berthoumieux, J. Andrzejewski, C. Paradela, H. Leeb, Isabel Lopes, N. Colonna, V. Chepel, L. Audouin, I. Savvidis, K. Wisshak, F. Voss, E. Kossionides, G. Rudolf, J. Salgado, G. Cortes, C. Carrapiço, Javier Praena, Michael Wiescher, C. Santos, A. Poch, J. Marganiec, A. Plukis, M. C. Vincente, L. Tavora, G. Aerts, Vasilis Vlachoudis, P. Baumann, P. E. Koehler, F. Bečvář, L. Ferrant, Roberto Capote, M. Krtička, F. Calviño, P.A. Assimakopoulos, F. Neves, P. M. Milazzo, R. Ferreira-Marques, T. Martinez, A. Lindote, L. Sarchiapone, M. Embid-Segura, L. Perrot, A. Herrera-Martinez, D. Karamanis, F. Käppeler, N. Patronis, James L. Cox, Arnaud Ferrari, Manuel Lozano, Matthias Heil, J. Pancin, D. Villamarin, I. Duran, E. Jericha, P. Cennini, Y. Kadi, M. Mosconi, I. Dillman, S. O'Brien, Marco Calviani, R. Terlizzi, P. Pavlopoulos, W. Dridi, A. Ventura, Rene Reifarth, J. M. Quesada, L. Tassan-Got, M. Dahlfors, P. Vaz, Aaron Couture, A. Pavlik, C. Domingo-Pardo, H. Álvarez, C. Lamboudis, J. L. Tain, C. Rubbia, Isabel S. Gonçalves, S. Marrone, M. Kerveno, K. Fujii, A. Mengoni, C. Pretel, C. Eleftheriadis, D. Karadimos, and E. González-Romero
Subjects: Nuclear physics, Physics, Neutron capture, Neutron flux, Nuclear Theory, Neutron cross section, Nuclear astrophysics, Physics::Accelerator Physics, Neutron source, Neutron, Neutron scattering, Neutron radiation, Nuclear Experiment
Abstract: Nuclear astrophysics, advanced nuclear technology and nuclear structure physics present many cases that require neutron capture reaction data with high precision. In particular, refined data are needed for stellar nucleosynthesis, for nuclear waste transmutation studies, and for the design of generation IV reactors. The measurements take profit of the pulsed neutron beam of the n_TOF facility at CERN, which is generated by proton‐induced spallation reactions on a massive lead target. The low repetition rate of the proton beam, the high instantaneous neutron flux, and the favourable background conditions in the experimental area make this facility unique for high resolution time‐of‐flight measurements of neutron induced reaction cross sections. The n_TOF collaboration is presently operating two different experimental set‐ups. The first consists of two low‐neutron sensitivity C6D6 detectors with the analysis relying on the Pulse Height Weighting technique. In addition, a Total Absorption Calorimeter, consis...
Published: 2009
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99. Fission cross-section measurements on [sup 233]U and minor actinides at the CERN ṉTOF facility

Author: J. M. Quesada, L. Tassan-Got, V. Chepel, S. Andriamonje, B. Haas, J. Salgado, W. Dridi, G. Rudolf, Corrie S. Moreau, A. Poch, E. Chiaveri, P. F. Mastinu, A. Ventura, G. Cortes, P. Baumann, L. Tavora, R. Vlastou, L. Ferrant, J. Andrzejewski, N. Colonna, D. Cano-Ott, E. Berthoumieux, P. Rullhusen, A. J. M. Plompen, V. Ketlerov, C. Santos, W.I. Furman, D. Villamarin, D. Karamanis, I. Dillmann, N. Patronis, A. Plukis, Roberto Capote, P.A. Assimakopoulos, L. Perrot, L. Sarchiapone, Masayuki Igashira, G. Aerts, V. Konovalov, F. Bečvář, Marco T. Pigni, J. Marganiec, F. Neves, K. Fujii, P. M. Milazzo, S. David, I. Savvidis, James L. Cox, Marco Calviani, Manuel Lozano, A. Herrera-Martinez, C. A. Papachristodoulou, G. Vannini, G. Tagliente, M. Krtička, F. Calviño, P. Cennini, A. Lindote, R. Ferreira-Marques, T. Martinez, F. Voss, Matthias Heil, J. Pancin, Fabio Belloni, C. Carrapiço, A. Goverdovski, I. Duran, F. Alvarez-Velarde, P. Pavlopoulos, M. Mosconi, E. Jericha, Gerald Badurek, M. C. Vincente, S. O'Brien, C. Eleftheriadis, Y. Kadi, R. C. Haight, Thomas Rauscher, Carlos Guerrero, U. Abbondanno, R. Terlizzi, E. Kossionides, C. Paradela, L. Audouin, C. Pretel, D. Karadimos, P. E. Koehler, Javier Praena, Heinz Oberhummer, E. González-Romero, M. Embid‐Sesura, Vasilis Vlachoudis, Michael Wiescher, S. Walter, Ralf Plag, F. Gramegna, H. Álvarez, Isabel Lopes, J. L. Tain, S. Lukic, C. Rubbia, Isabel S. Gonçalves, S. Marrone, M. Kerveno, Alberto Mengoni, F. Käppeler, Costas G. Papadopoulos, M. Dahlfors, P. Vaz, Aaron Couture, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, C. Stephan, F. Gunsing, Cristian Massimi, H. Leeb, A. Ferrari, K. Wisshak, and Rene Reifarth
Subjects: Nuclear physics, Chemistry, Isotopes of samarium, Xenon-135, Nuclear Theory, Radiochemistry, Neutron cross section, Neutron source, Neutron, Fission product yield, Nuclear Experiment, Long-lived fission product, Fast fission
Abstract: Neutron‐induced fission cross‐sections of minor actinides have been measured at the white neutron source n_TOF at CERN, Geneva. The studied isotopes include 233U, interesting for Th/U based nuclear fuel cycles, 241,243Am and 245Cm, relevant for transmutation and waste reduction studies in new generation fast reactors (Gen‐IV) or Accelerator Driven Systems. The measurements take advantage of the unique features of the n_TOF facility, namely the wide energy range, the high instantaneous neutron flux and the low background. Results for the involved isotopes are reported from ∼30 meV to around 1 MeV neutron enegy. The measurements have been performed with a dedicated Fission Ionization Chamber (FIC), relative to the standard cross‐section of the 235U fission reaction, measured simultaneously with the same detector. Results are here reported.
Published: 2009
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100. The n_TOF Total Absorption Calorimeter for neutron capture measurements at CERN

Author: F. Gunsing, Cristian Massimi, S. David, G. Tagliente, R. C. Haight, J. Salgado, A. Poch, L. Tavora, A. J. M. Plompen, Rene Reifarth, S. Walter, P. M. Milazzo, L. Audouin, G. Vannini, A. Herrera-Martinez, C. Paradela, S. Lukic, A. Pavlik, G. Rudolf, I. Lopes, Michael Wiescher, F. Käppeler, C. T. Papadopoulos, P. Pavlopoulos, C. Domingo-Pardo, J. Marganiec, S. Andriamonje, P. Rullhusen, P. E. Koehler, D. Villamarin, Ralf Plag, Michael Heil, J. M. Quesada, Marco T. Pigni, I. Savvidis, J. Andrzejewski, N. Patronis, P. Cennini, Carlo Rubbia, B. Haas, P. F. Mastinu, V. Vlachoudis, F. Alvarez-Velarde, F. Gramegna, Iris Dillmann, S. Marrone, G. Cortes, C. Santos, M. Mosconi, C. Carrapiço, C. Stephan, S. O'Brien, Manuel Lozano, F. Bečvář, W. Dridi, R. Terlizzi, E. Mendoza, F. Voss, C. Eleftheriadis, C. Lampoudis, E. Berthoumieux, T. Martinez, Roberto Capote, Yacine Kadi, P.A. Assimakopoulos, H. Álvarez, Nicola Colonna, M. Krtička, F. Neves, E. Jericha, F. Calviño, J. L. Tain, Carlos Guerrero, Alfredo Ferrari, M. Dahlfors, R. Ferreira-Marques, U. Abbondanno, P. Vaz, Heinz Oberhummer, M. Kerveno, Alberto Ventura, Aaron Couture, E. Gonzalez-Romero, W.I. Furman, A. Plukis, Alberto Mengoni, J. Pancin, J. Cox, E. Chiaveri, D. Cano-Ott, Laurent Tassan-Got, A. Lindote, C. A. Papachristodoulou, L. Ferrant, M. C. Vicente, G. Aerts, K. Wisshak, C. Pretel, H. Leeb, K. Fujii, E. Kossionides, Javier Praena, I. Goncalves, Thomas Rauscher, D. Karadimos, L. Sarchiapone, R. Vlastou, Marco Calviani, V. Chepel, Masayuki Igashira, I. Duran, P. Baumann, L. Perrot, C. Moreau, Gerald Badurek, C. Guerrero, U. Abbondanno, G. Aert, H. Alvarez, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulo, L. Audouin, G. Badurek, P. Baumann, F. Becvar, E. Berthoumieux, F. Calvino, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapico, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Corte, A. Couture, J. Cox, M. Dahlfor, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadi, L. Ferrant, A. Ferrari, R. Ferreira-Marque, K. Fujii, W. Furman, I. Goncalve, E. Gonzalez-Romero, F. Gramegna, F. Gunsing, B. Haa, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Kappeler, Y. Kadi, D. Karadimo, M. Kerveno, P. Koehler, E. Kossionide, M. Krticka, C. Lampoudi, H. Leeb, A. Lindote, I. Lope, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martinez, C. Massimi, P. Mastinu, E. Mendoza, A. Mengoni, P.M. Milazzo, C. Moreau, M. Mosconi, F. Neve, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulo, C. Paradela, N. Patroni, A. Pavlik, P. Pavlopoulo, L. Perrot, M.T. Pigni, R. Plag, A. Plompen, A. Pluki, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santo, L. Sarchiapone, I. Savvidi, C. Stephan, G. Tagliente, J.L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M.C. Vicente, V. Vlachoudi, R. Vlastou, F. Vo, S. Walter, M. Wiescher, K. Wisshak, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), European Organization for Nuclear Research (CERN), Pôle Universitaire Léonard de Vinci (PôLE UNIVERSITAIRE LéONARD DE VINCI), Pôle Universitaire Léonard de Vinci (PULV), and nTOF
Subjects: Nuclear and High Energy Physics, Nuclear transmutation, Physics::Instrumentation and Detectors, GAMMA RAY CALORIMETER, neutron cross-sections, Total Absorption, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], time-of-flight, 7. Clean energy, 01 natural sciences, Nuclear physics, Stellar nucleosynthesis, Nucleosynthesis, 0103 physical sciences, Neutron, n_TOF, 010306 general physics, Absorption (electromagnetic radiation), total absorption, Nuclear Experiment, Instrumentation, isotopes, cross-section measurements, Physics, Time-of-Flight, detector, 010308 nuclear & particles physics, baf2 detector, transmutation, BaF2 detector, Calorimeter, Time of flight, Neutron capture, stomatognathic diseases, n_tof, beam, of-flight facility, NEUTRON CAPTURE, neutron capture, Neutron cross-sections
Abstract: The n_TOF Collaboration has built and commissioned a high-performance detector for (n, gamma) measurements called the Total Absorption Calorimeter (TAC). The TAC was especially designed for measuring neutron capture cross-sections of low-mass and/or radioactive samples with the accuracy required for nuclear technology and stellar nucleosynthesis. We present a detailed description of the TAC and discuss its overall performance in terms of energy and time resolution, background discrimination, detection efficiency and neutron sensitivity. (C) 2009 Elsevier B.V. All rights reserved. Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment
Published: 2009
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