Author: "F. Azaiez" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"F. Azaiez"' showing total 302 results

Start Over Author "F. Azaiez"

302 results on '"F. Azaiez"'

51. Neutronh11/2band structures of109,111Pdobserved in heavy-ion induced fission

Author: H. Sergolle, N. Schulz, R. Lucas, Josette Duprat, F. Hoellinger, I. Deloncle, F. Azaiez, T. Kutsarova, M. G. Porquet, Ts. Venkova, B. J. P. Gall, C. Gautherin, E. Gueorguieva, S. Bouneau, A. Minkova, Ch. Bourgeois, and Anna Wilson
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Fission, Neutron, Heavy ion
Published: 1998
Full Text: View/download PDF

52. Study of subshell closure atN = 40 by Coulomb excitation

Author: M. Lewitowicz, F. de Oliveira, A. Gillibert, C. Bourgeois, J. M. Daugas, J. C. Angélique, A.C. Mueller, F. Pougheon, C. Borcea, O. Sorlin, M. G. Saint-Laurent, C. Donzaud, Josette Duprat, J. Kiener, M. Belleguic, J. S. Winfield, Yu. Sobolev, Yu. E. Penionzhkevich, S. Leenhardt, N. A. Orr, M. G. Porquet, D. Guillemaud-Mueller, F. Azaiez, S. Grévy, I. Deloncle, and F. Marie
Subjects: Nuclear physics, Physics, High energy, Fragmentation (mass spectrometry), Spectrometer, Coulomb excitation, Atomic physics, Excitation, Beam (structure)
Abstract: A Coulomb excitation experiment has been performed in order to study the subshell closure atN = 40 for neutron-rich nuclei. This subshell effect is thought to be enhanced when largeN/Z ratios are encountered. Therefore, theZ = 2868Ni is of particular interest in order to test this behaviour. Some experimental information is already available for68Ni at low excitation energy: a 0+ 2 isomer, a 2+ state and a long-lived 5- state. The high energy of the 2+ state suggests the shell closure though its reduced transition probabilityB(E2) has never been mesured. The nuclei68Ni,70,72Zn,76Ge have been produced in the fragmentation of a86Kr beam at 60 MeV/A. The selection of these secondary beams has been performed by LISE3 spectrometer at GANIL. Performances of the detector system “Château de Cristal” and preliminary results on reduced transition probabilitiesB(E2) are presented and discussed.
Published: 1998
Full Text: View/download PDF

53. Coulomb Excitation of Radioactive Beams at GANIL

Author: O. Sorlin, F. Azaiez, 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), and Robert, Suzanne
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, 0103 physical sciences, Coulomb excitation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, 01 natural sciences
Published: 1998
Full Text: View/download PDF

54. High-spin structures of 124−131Te: Competition of proton- and neutron-pair breakings

Author: Alain Astier, D. Curien, O. Dorvaux, Ch. Theisen, B.J.P. Gall, G. Duchêne, O. Stezowski, I. Deloncle, N. Redon, Marie-Geneviève Porquet, G. Barreau, M. Houry, F. Azaiez, Ts. Venkova, R. Lucas, Marc Rousseau, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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 Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-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, Nuclear Theory, Isotope, Fission, Yrast, FOS: Physical sciences, Parity (physics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Coincidence, Nuclear Theory (nucl-th), Nuclear physics, Nuclear fusion, Neutron, Nuclear Experiment (nucl-ex), Nuclear Experiment, Excitation
Abstract: The 124-131Te nuclei have been produced as fission fragments in two fusion reactions induced by heavy-ions (12C + 238U at 90 MeV bombarding energy and 18O + 208Pb at 85 MeV) and studied with the Euroball array. Their high-spin level schemes have been extended to higher excitation energy from the triple gamma-ray coincidence data. The gamma-gamma angular correlations have been analyzed in order to assign spin and parity values to many observed states. Moreover the half-lives of isomeric states have been measured from the delayed coincidences between the fission-fragment detector SAPhIR and Euroball, as well as from the timing information of the Ge detectors. The behaviors of the yrast structures identified in the present work are first discussed in comparison with the general features known in the mass region, particularly the breakings of neutron pairs occupying the nuh11/2 orbit identified in the neighboring Sn nuclei. The experimental level schemes are then compared to shell-model calculations performed in this work. The analysis of the wave functions shows the effects of the proton-pair breaking along the yrast lines of the heavy Te isotopes., accepted for publication in Eur. Phys. J. A
Published: 2014
Full Text: View/download PDF

55. Quantitative analysis of two-neutron correlations in the12C(18O,16O)14C reaction

Author: J. A. Scarpaci, S. Tropea, Daniele Carbone, A. Gargano, F. Azaiez, Roberto Linares, C. Agodi, V. N. Garcia, Manuela Cavallaro, S. Franchoo, A. Foti, S. M. Lenzi, J. Lubian, D. Nicolosi, Francesco Cappuzzello, M. De Napoli, M. Niikura, and M. Bondì
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Coupling (probability), Finite range, 01 natural sciences, 7. Clean energy, Optical potential, Spectral line, 0103 physical sciences, Cluster (physics), Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Energy (signal processing)
Abstract: The ${}^{12}$C(${}^{18}$O,${}^{16}$O)${}^{14}$C and ${}^{12,13}$C(${}^{18}$O,${}^{17}$O)${}^{13,14}$C reactions are studied at 84 MeV. Mass distributions and energy spectra of the ejectiles are measured, indicating the selectivity of these reactions to populate two- and one-neutron configurations in the states of the residual nucleus, respectively. The measured absolute cross-section angular distributions are analyzed by exact finite range coupled reaction channel calculations based on a parameter free double-folding optical potential. The form factors for the (${}^{18}$O,${}^{16}$O) reaction are extracted within an extreme cluster and independent particles scheme with shell-model-derived coupling strengths. The results show that the measured cross sections are accurately described for the first time without the need for any arbitrary scaling factor. The (${}^{18}$O,${}^{16}$O) reaction is thus found to be a powerful tool for quantitative spectroscopic studies of pair configurations in nuclear states.
Published: 2013
Full Text: View/download PDF

56. Single-particle Strength in Neutron-rich 69Cu

Author: I. Matea, B. Le Crom, C. Petrone, L. Lefebvre, C. Borcea, P. Morfouace, D. R. Napoli, I. Stefan, S. Franchoo, R. Borcea, N. de Sereville, D. Mengoni, M. Assié, A. Mutschler, F. Rotaru, L. Grassi, M. Stanoiu, F. Hammache, Jérôme Guillot, Daisuke Suzuki, F. Azaiez, Institut de Physique Nucléaire d'Orsay (IPNO), and 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)
Subjects: Physics, 010308 nuclear & particles physics, General Physics and Astronomy, Cu-69, transferred angular momenta, Orsay tandem, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Particle, Neutron, 010306 general physics, Nuclear Experiment
Abstract: International audience; The nuclear structure of 69Cu has been investigated by means of the (d,3He) transfer reaction at the Orsay tandem in direct kinematics using a deuteron beam at Ed = 27 MeV and a target of 70Zn isotopically enriched to 95.4%. The 3He of interest from the transfer reaction were detected with the split-pole spectrometer at different angles in the laboratory frame in order to perform angular distributions and assign the angular momentum for each populated state in 69Cu. In this paper, the transferred angular momenta of the populated states will be presented.
Published: 2013
Full Text: View/download PDF

57. High-spin structures of3688Kr52and3789Rb52: Evolution from collective to single-particle behavior

Author: I. Deloncle, D. Curien, A. Astier, Ts. Venkova, Marie-Geneviève Porquet, O. Dorvaux, B.J.P. Gall, O. Stezowski, M. Rousseau, G. Duchêne, N. Redon, and F. Azaiez
Subjects: Physics, Nuclear and High Energy Physics, Angular momentum, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Yrast, Nuclear Theory, SHELL model, Parity (physics), 01 natural sciences, Coincidence, 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Nuclear theory, Excitation
Abstract: The high-spin states of the two neutron-rich nuclei ${}^{88}$Kr${}_{52}$ and ${}^{89}$Rb${}_{52}$ have been studied from the ${}^{18}$O+${}^{208}$Pb fusion-fission reaction. Their level schemes were built from triple $\ensuremath{\gamma}$-ray coincidence data, and $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}$ angular correlations were analyzed in order to assign spin and parity values to most of the observed states. The two level schemes evolve from collective structures to single-particle excitations as a function of the excitation energy. Comparison with results of shell-model calculations gives the specific proton and neutron configurations which are involved to generate the angular momentum along the yrast lines.
Published: 2013
Full Text: View/download PDF

58. High-spin structures of55136Cs81

Author: O. Stezowski, D. Curien, R. Lucas, Marc Rousseau, A. Astier, O. Dorvaux, P. C. Srivastava, N. Redon, F. Azaiez, Marie-Geneviève Porquet, B.J.P. Gall, Ch. Theisen, G. Duchêne, M. Houry, and I. Deloncle
Subjects: Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, 0103 physical sciences, SHELL model, Atomic physics, Nuclear Experiment, 010306 general physics, 01 natural sciences, Excitation, Energy (signal processing), Spin-½
Abstract: Odd-odd ${}^{136}$Cs nuclei have been produced in the ${}^{18}\mathrm{O}+{}^{208}$Pb and ${}^{12}\mathrm{C}+{}^{238}$U fusion-fission reactions and their $\ensuremath{\gamma}$ rays studied with the Euroball array. The high-spin level scheme was built up to $\ensuremath{\sim}$4.7 MeV excitation energy and spin $I\ensuremath{\sim}16\ensuremath{\hbar}$ from the triple $\ensuremath{\gamma}$-ray coincidence data. The configurations of the three structures observed above $\ensuremath{\sim}$2 MeV excitation energy are first discussed by analogy with the proton excitations identified in the semimagic ${}^{137}$Cs${}_{82}$ nucleus, which involve the three high-$j$ orbits lying above the $Z=50$ gap, $\ensuremath{\pi}{g}_{7/2}$, $\ensuremath{\pi}{d}_{5/2}$, and $\ensuremath{\pi}{h}_{11/2}$. This is confirmed by the results of shell-model calculations performed in this work.
Published: 2013
Full Text: View/download PDF

59. Dipole bands in the oblate-shaped195Pb

Author: M. Kaci, H. Sergolle, Marco Meyer, C. W. Beausang, F. Azaiez, N. Redon, N. Poffé, A. G. Smith, A. Korichi, R. Wadsworth, J.F. Sharpey-Schafer, Malcolm J. Joyce, Josette Duprat, M. Aïche, B. J. P. Gall, K. Hauschild, M. G. Porquet, R. Duffait, N. Perrin, G. Bastin, F. Hannachi, R. M. Clark, E. S. Paul, I. Deloncle, C. Bourgeois, J. Simpson, Y. Le Coz, and C. Schück
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Dipole, Spectrometer, Oblate spheroid, Nuclear fusion, Neutron, Atomic physics
Abstract: The nucleus195Pb has been populated with the184W+16O reaction at 113 MeV. Two dipole γ-ray cascades have been observed using the EUROGAM spectrometer. A comprehensive level scheme related to these structures has been established. Multiparticle configurations are attributed to these high-spin structures from detailed comparison with the neighbouring nuclei,193Hg,194Pb and195Tl. Band crossings due to i13/2 neutron pair breaking are observed in195Pb at about the same frequencies as in the isotone193Hg.
Published: 1996
Full Text: View/download PDF

60. Collective and quasiparticle excitations in superdeformedHg190

Author: A. Korichi, D. T. Nisius, T. Lauritsen, Takashi Nakatsukasa, M. Bergström, Laurent Ducroux, T. L. Khoo, A. Lopez-Martens, Anna Wilson, J. N. Wilson, M. P. Carpenter, M. G. Porquet, B. Crowell, B. J. P. Gall, D. J. Blumenthal, F. Azaiez, Iftikhar Ahmad, N. Redon, J.F. Sharpey-Schafer, R. V. F. Janssens, József Tímár, A. Astier, Matthias Meyer, E. S. Paul, and F. Hannachi
Subjects: Physics, Nuclear and High Energy Physics, Yrast, Excited state, Phase (waves), Quasiparticle, Neutron, Moment of inertia, Atomic physics, Random phase approximation, Excitation
Abstract: Superdeformed (SD) states of {sup 190}Hg have been studied with the Eurogam Phase 2 {gamma}-ray spectrometer using the {sup 160}Gd({sup 34}S,4{ital n}) reaction. Two new excited SD bands have been found and identified as belonging to this nucleus, bringing the total number of SD bands in {sup 190}Hg to 4. One of the new bands has a dynamic moment of inertia that is very similar to that of the yrast SD band of {sup 190}Hg and most other SD bands in the {ital A}{approximately}190 region. In contrast, the other band has a dynamic moment of inertia which is mainly constant as a function of rotational frequency and exhibits a dramatic increase at the lowest frequencies. The observed dynamic moments of inertia are compared with the results of random phase approximation calculations based on the cranked shell model. Finally, the known excited SD band has been extended towards lower frequencies and new transitions have been found linking this band to the yrast SD band. The extracted {ital B}({ital E}1) values of the new linking transitions give further support for the possible octupole vibrational character of this band. {copyright} {ital 1996 The American Physical Society.}
Published: 1996
Full Text: View/download PDF

61. Configurations of superdeformed bands inPb193

Author: S. Bouneau, F. Hannachi, Meot, C. Schück, F. Azaiez, N. Redon, N. Poffé, Matthias Meyer, Stephane Perries, Anna Wilson, M. G. Porquet, A. Lopez-Martens, C. Bourgeois, R. Collatz, Le Coz Y, A. Astier, J.F. Sharpey-Schafer, H. Sergolle, A. Korichi, Laurent Ducroux, R. Lucas, B. J. P. Gall, Hibbert I I, R. Wadsworth, Deloncle I I, and R. Duffait
Subjects: Physics, Nuclear and High Energy Physics, Dipole, Branching fraction, Moment of inertia, Atomic physics, Quasi particles, Rotational frequency
Abstract: The six superdeformed bands in {sup 193}Pb have been studied with the EUROGAM 2 {gamma}-ray spectrometer using the {sup 168}Er({sup 30}Si,5{ital n}){sup 193}Pb reaction. The results are discussed in terms of cranked-Hartree-Fock-Bogolioubov-Lipkin-Nogami calculations. From the @FF {sup (2)} moment of inertia behavior as function of the rotational frequency and the {ital M}1 and {ital E}2 decay competition of the superdeformed states, the bands are interpreted as three pairs of signature partners based on quasineutron excitations. Dipole transitions linking two signature partner superdeformed bands have been observed and, for the first time in lead isotopes, the branching ratio {ital B}({ital M}1)/{ital B}({ital E}2)=0.15{plus_minus}0.04 {mu}{sup 2}{sub {ital N}}/{ital e}{sup 2}b{sup 2} has been extracted. {copyright} {ital 1996 The American Physical Society.}
Published: 1996
Full Text: View/download PDF

62. Thei132proton intruder orbital in the superdeformedTl193nucleus: Effective magnetic moment and blocking of proton pairing

Author: J. Duprat, H. Sergolle, F. Azaiez, N. Redon, S. Pilotte, M. G. Porquet, Laurent Ducroux, C. Bourgeois, J.F. Sharpey-Schafer, M. Bergstrom, Y. Le Coz, N. Perrin, E. S. Paul, C. Schück, Marco Meyer, Ramon Wyss, Anna Wilson, S. Bouneau, F. Hannachi, M. A. Riley, B. J. P. Gall, Alain Astier, M. Kaci, János Timár, A. Lopez-Martens, I. Deloncle, and A. Korichi
Subjects: Physics, Nuclear and High Energy Physics, symbols.namesake, Pauli exclusion principle, Magnetic moment, Proton, Yrast, Pairing, symbols, Saturation (graph theory), Moment of inertia, Atomic physics, Omega
Abstract: From the observed competition between $M1$ and $E2$ $\ensuremath{\gamma}$ transitions deexciting the states of the two signature partner yrast superdeformed bands in $^{193}\mathrm{Tl}$, the ${i}_{\frac{13}{2}}$ ($\ensuremath{\Omega}=\frac{5}{2}$) intruder proton orbital is found to have $\frac{({g}_{K}\ensuremath{-}{g}_{R})K}{{Q}_{0}}=0.138\ifmmode\pm\else\textpm\fi{}0.008$. A model dependent value of ${g}_{s}^{\mathrm{eff}}=(0.7\ifmmode\pm\else\textpm\fi{}0.2){g}_{s}^{\mathrm{free}}$ is deduced. A saturation of the ${\mathcal{T}}^{2}$ moments of inertia, at rotational frequency $\ensuremath{\hbar}\ensuremath{\omega}g0.32$ MeV, is observed for the two bands. This feature is discussed in terms of exhausted quasineutron alignment in the presence of substantially reduced quasiproton alignment due to Pauli blocking.
Published: 1996
Full Text: View/download PDF

63. Towards the determination of superdeformation in 42Ca

Author: Dave Cullen, K {Hadynska-Klek}, P J {Napiorkowski}, A {Maj}, F {Azaiez}, M {Kicinska-Habior}, J J {Valiente-Dobon}, Angelis, G., T {Abraham}, Anil Kumar, G., Q, B., D {Bazzacco}, M {Bellato}, D {Bortolato}, P {Bednarczyk}, G {Benzoni}, L {Berti}, B {Birkenbach}, B {Bruyneel}, S {Brambilla}, F {Camera}, J {Chavas}, M {Ciemala}, P {Cocconi}, P {Coleman-Smith}, A {Colombo}, A {Corsi}, F C L {Crespi}, D M {Cullen}, A {Czermak}, P {Desesquelles}, B {Dulny}, J {Eberth}, E {Farnea}, B {Fornal}, S {Franchoo}, A {Gadea}, A {Giaz}, A {Gottardo}, X {Grave}, J {Grebosz}, M {Gulmini}, T {Habermann}, R {Isocrate}, J {Iwanicki}, G {Jaworski}, A {Jungclaus}, N {Karkour}, M {Kmiecik}, D {Karpinski}, M {Kisielinski}, N {Kondratyev}, A {Korichi}, M {Komorowska}, M {Kowalczyk}, W {Korten}, M {Krzysiek}, G {Lehaut}, S {Leoni}, A {Lopez-Martens}, S {Lunardi}, G {Maron}, K {Mazurek}, R {Menegazzo}, D {Mengoni}, E {Merchan}, W {Meczynski}, C {Michelagnoli}, J {Mierzejewski}, B {Million}, P {Molini}, S {Myalski}, D R {Napoli}, R {Nicolini}, M {Niikura}, A {Obertelli}, S F {Ozmen}, M {Palacz}, A {Pullia}, G {Rampazzo}, F {Recchia}, N {Redon}, P {Reiter}, D {Rosso}, K {Rusek}, E {Sahin}, D, M., A, P., J {Srebrny}, I {Stefan}, O {Stezowski}, J {Styczen}, C h {Theisen}, N {Toniolo}, C A {Ur}, V {Vandone}, R {Wadsworth}, B {Wasilewska}, A {Wiens}, K {Wrzosek-Lipska}, M {Zielinska}, and M {Zieblinski}
Subjects: Coulomb excitation, Electromagnetic structure, Ground-state band, Low-lying state, Quadrupole deformations, Super-deformation, Superdeformed band, Physical properties, Physics, Calcium, Superdeformed band, Physical properties, Ground-state band, Coulomb excitation, Physics, Electromagnetic structure, Low-lying state, Quadrupole deformations, Super-deformation
Published: 2013

64. Neutron decay of the Giant Pairing Vibration in15C

Author: Luciano Pandola, F. Azaiez, A. Foti, Francesco Cappuzzello, Diana Carbone, J. A. Scarpaci, M. Assié, Manuela Cavallaro, N. de Séréville, V. Soukeras, O. Sgouros, C. Agodi, 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 de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and 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)
Subjects: History, Neutron emission, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Neutron scattering, 7. Clean energy, 01 natural sciences, Numen, Charge Exchange, Nuclear Matrix, Education, Nuclear physics, Charge Exchange, Numen, 0103 physical sciences, Neutron detection, Nuclear Matrix, Neutron, Nuclear Experiment, 010306 general physics, Physics, Spectrometer, 010308 nuclear & particles physics, Nuclear structure, Computer Science Applications, Vibration, Pairing, High Energy Physics::Experiment, Atomic physics
Abstract: International audience; The neutron decay of the resonant states of light neutron-rich nuclei is an important and poorly explored property, useful to extract valuable nuclear structure information. The neutron decay of the (15)C resonances populated via the two-neutron transfer reaction (13)C((18)O,(16)O n) at 84 MeV incident energy is studied using an innovative technique which couples the MAGNEX magnetic spectrometer and the EDEN neutron detector array. The data show that the recently observed (15)C Giant Pairing Vibration at 13.7 MeV mainly decays via two-neutron emission.
Published: 2016
Full Text: View/download PDF

65. Relative spins and excitation energies of superdeformed bands inHg190: Further evidence for octupole vibration

Author: T. Lauritsen, M. P. Carpenter, B. Crowell, Takashi Nakatsukasa, A. Korichi, D. T. Nisius, T. L. Khoo, R. V. F. Janssens, D. J. Blumenthal, Alain Astier, E. S. Paul, B. J. P. Gall, I. Ahmad, Anna Wilson, F. Hannachi, A. Lopez-Martens, L. du Croux, M. G. Porquet, Marco Meyer, N. Redon, F. Azaiez, J. Timár, and J.F. Sharpey-Schafer
Subjects: Physics, Nuclear and High Energy Physics, Spins, Spectrometer, 010308 nuclear & particles physics, Phase (waves), 01 natural sciences, Vibration, Dipole, Excited state, 0103 physical sciences, Atomic physics, 010306 general physics, Spin (physics), Excitation
Abstract: An experiment using the Eurogam phase II \ensuremath{\gamma}-ray spectrometer confirms the existence of an excited superdeformed (SD) band in $^{190}\mathrm{Hg}$ and its very unusual decay into the lowest SD band over 3--4 transitions. The energies of the transitions linking the two SD bands have been firmly established, and their angular distributions are consistent with a dipole character. Comparisons with calculations using random-phase approximation indicate that the excited SD band can be interpreted as an octupole-vibrational structure.
Published: 1995
Full Text: View/download PDF

66. A search for the isovector monopole resonance in 208Pb

Author: S. Fortier, G. M. Crawley, J. Guillot, Sijtze Brandenburg, T. Suomijärvi, H. Laurent, Joseph E. Finck, F. Azaiez, H. Langevin-Joliot, J. Stasko, S. Gales, Y. Blumenfeld, I. Lhenry, D. Beaumel, and J.M. Maison
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Isovector, Magnetic monopole, Resonance (particle physics)
Published: 1995
Full Text: View/download PDF

67. M1 transitions between superdeformed states in194, 195Tl: The fingerprint of thei13/2proton intruder orbital

Author: N. Poffé, F. Azaiez, A. Kaci, N. Redon, S.J. Gale, H. Sergolle, G. Bastin, M. G. Porquet, C. Schück, A. Korichi, Josette Duprat, R. Duffait, F. Hannachi, Y. Le Coz, Malcolm J. Joyce, N. Perrin, C. Bourgeois, J.F. Sharpey-Schafer, R. Wadsworth, Marco Meyer, W. H. Kelly, C. W. Beausang, I. M. Hibbert, J. Simpson, M. Aïche, I. Deloncle, R. M. Clark, and B. J. P. Gall
Subjects: Physics, Dipole, Spins, Nuclear Theory, Quadrupole, Strong coupling, Neutron, Atomic physics, Nuclear Experiment, Condensed Matter Physics, Mathematical Physics, Atomic and Molecular Physics, and Optics
Abstract: Recent data from the EUROGAM array have revealed dipole transitions linking signature partner superdeformed bands in 194Tl and 195Tl nuclei. Measurements of the decay branching ratios, taken together with the average quadrupole moment of the neighboring superdeformed nuclei, enable the absolute M1 strengths to be determined. From these data and using the strong coupling model, we find that two SD bands in 195Tl are due to the 81st proton being in the [642]5/2+ orbital and four from the six SD bands in 194Tl correspond to a configuration where the intrinsic spins of the single proton and single neutron are aligned.
Published: 1995
Full Text: View/download PDF

68. High-spin structures of fiveN=82isotopes:54136Xe,55137Cs,56138Ba,57139La, and58140Ce

Author: M. Rousseau, Ts. Venkova, M. Houry, O. Stezowski, Ch. Theisen, A. Astier, R. Lucas, Marie-Geneviève Porquet, D. Curien, B. J. P. Gall, O. Dorvaux, D. Verney, G. Duchêne, I. Deloncle, F. Azaiez, G. Barreau, and N. Redon
Subjects: Physics, Nuclear and High Energy Physics, Proton, Isotope, 010308 nuclear & particles physics, Yrast, 01 natural sciences, Excited state, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Spin (physics), Energy (signal processing), Excitation
Abstract: Five $N=82$ isotones have been produced in two fusion-fission reactions and their $\ensuremath{\gamma}$ rays studied with the Euroball array. The high-spin states of ${}^{139}$La have been identified, while the high-spin yrast and near-to-yrast structures of the four others have been greatly extended. From angular correlation analysis, spin values have been assigned to some states of ${}^{136}$Xe and ${}^{137}$Cs. Several cascades involving $\ensuremath{\gamma}$ rays of ${}^{139}$La have been found to be delayed; they deexcite an isomeric state with ${T}_{1/2}=315(35)$ ns located at 1800 keV excitation energy. The excited states of these five $N=82$ isotones are expected to be due to various proton excitations involving the three high-$j$ subshells located above the $Z=50$ shell closure. This is confirmed by the results of shell-model calculations performed in this work. In addition, high-spin states corresponding to the excitation of the neutron core have been unambiguously identified in ${}^{136}$Xe, ${}^{137}$Cs, and ${}^{138}$Ba.
Published: 2012
Full Text: View/download PDF

69. First direct lifetime measurement of the 21+state in72,74Zn: New evidence for a shape transition betweenN=40andN=42close toZ=28

Author: W. Rother, D. Pantelica, F. Ibrahim, S. Grévy, S. Myalski, L. Perrot, Georgi P. Georgiev, M. Hackstein, C. Fransen, G. de Angelis, G. Burgunder, M. Kmiecik, L. Coquard, I. Stefan, Emyr Clement, I. Matea, Zs. Dombrádi, C. Borcea, A. Buta, A. Dijon, F. de Oliveira Santos, S. Franchoo, Mohsen Harakeh, Predrag Ujić, J. A. Scarpaci, F. Negoita, L. Gaudefroy, P. Bednarczyk, F. Rotaru, B. Mouginot, L. Caceres, A. Dewald, A. Bürger, M. Assié, A. Maj, Th. Pissulla, J. C. Thomas, C. Mihai, C. Stodel, M. Niikura, E. Fiori, G. Friessner, O. Möller, F. Azaiez, O. Kamalou, D. Verney, and R. Lozeva
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, Fragmentation (mass spectrometry), 010308 nuclear & particles physics, Scattering, Excited state, 0103 physical sciences, Atomic physics, Inelastic scattering, 010306 general physics, 01 natural sciences, 7. Clean energy
Abstract: We report here the first direct lifetime measurement of the 2(1)(+) state in Zn-72,Zn-74. The neutron-rich beam was produced by in-flight fragmentation of Ge-76 at the Grand Accelerateur National d'Ions Lourds and separated with the LISE spectrometer. The 2(1)(+) state was excited by inelastic scattering and knock-out reaction on a CD2 target and its lifetime was measured by the recoil-distance Doppler-shift method with the Koln plunger device combined with the EXOGAM detectors. The lifetimes of the 2(1)(+) states in Zn-72,Zn-74 were determined to be 17.9(18) and 27.0(24) ps, which correspond to reduced transition probabilities B(E2; 2(1)(+)-> 0(+)) = 385(39) and 370(33) e(2) fm(4), respectively. These values support the idea of a systematic maximum of collectivity at N = 42 for Zn, Ge, and Se nuclei. In addition, the available systematics in the neighboring nuclei point toward a transition from a spherical oscillator at N = 40 to complete gamma-softness at N = 42.
Published: 2012
Full Text: View/download PDF

70. High-spin states with seniorityv=4, 5, and 6 in119–126Sn

Author: M. Houry, Ch. Theisen, O. Dorvaux, G. Duchêne, O. Stezowski, A. Astier, N. Redon, D. Curien, G. Barreau, Marie-Geneviève Porquet, B. J. P. Gall, D. Verney, I. Deloncle, M. Rousseau, R. Lucas, and F. Azaiez
Subjects: Physics, Nuclear and High Energy Physics, Angular momentum, Spin states, 010308 nuclear & particles physics, Fission, Nuclear Theory, SHELL model, 01 natural sciences, Ion, Nuclear physics, 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Energy (signal processing), Excitation
Abstract: The ${}^{119--126}$Sn nuclei have been produced as fission fragments in two reactions induced by heavy ions: ${}^{12}\text{C}+{}^{238}\text{U}$ at a bombarding energy of 90 MeV and ${}^{18}\text{O}+{}^{208}\text{Pb}$ at 85 MeV. Their level schemes have been built from $\ensuremath{\gamma}$ rays detected using the Euroball array. High-spin states located above the long-lived isomeric states of the even- and odd-$A$ ${}^{120--126}$Sn nuclei have been identified. Moreover, isomeric states lying around 4.5 MeV have been established in ${}^{120,122,124,126}$Sn from the delayed coincidences between the fission fragment detector SAPhIR and the Euroball array. The states located above 3 MeV excitation energy are ascribed to several broken pairs of neutrons occupying the $\ensuremath{\nu}{h}_{11/2}$ orbit. The maximum value of angular momentum available in such a high-$j$ shell, i.e., for midoccupation and the breaking of the three neutron pairs, has been identified. This process is observed for the first time in spherical nuclei.
Published: 2012
Full Text: View/download PDF

71. Shape coexistence at N=20 and N=28 : study of 0+2 states in $^{34}$Si and $^{44}$S

Author: F. Azaiez, F. de Oliveira, R. Chevrier, B. Bastin, J. M. Daugas, F. Rotaru, O. Sorlin, J. C. Angélique, D. Lebhertz, I. Stefan, Zs. Dombrádi, S. M. Lukyanov, R. Borcea, L. Caceres, A. Buta, L. Gaudefroy, C. Stodel, F. Negoita, N. L. Achouri, S. Grévy, C. Force, Y. E. Penionzhkevich, S. Calinescu, Dóra Sohler, C. Petrone, J. C. Thomas, Alfredo Poves, J. Mrazek, C. Borcea, F. Nowacki, M. Stanoiu, 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), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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), 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Sivaramakrishnan Muralithar, 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), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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 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), and Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Condensed matter physics, Island of inversion, Chemistry, Magic (programming), Nuclear structure, Theoretical models, 020206 networking & telecommunications, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 23.35.+g, 23.40.-s, 23.20.Lv, 25.70.Mn, 27.30.+t, 27.40.+z, 29.30.Kv, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Atomic physics, Ground state, Spectroscopy
Abstract: Expérience GANIL/LISE3/EXOGAM; International audience; It is well known that the nuclear shell structure changes for the most exotic nuclei. One of the consequences ofthis phenomenon is the modification of the "classical" magic numbers, as experimentally observed at N = 20 and N = 28.Nevertheless, the mechanisms responsible for such changes are still under discussion and more experimental information isneeded to better constrain the theoretical models. In these proceedings, we report on the discovery and the experimental studyby precise spectroscopy experiments of the 0+2 state in 34Si and 44S. The 34Si is located between the magic spherical 36S andthe deformed 32Mg, member of the so-called island of inversion, whereas 44S is located between the magic spherical 48Caand the deformed 42Si. Therefore, the structure of these nuclei, and in particular the phenomenon of shape coexistence, isof crucial importance to understand how the intruder configurations progressively dominate the ground state structure of themost exotic nuclei at both N = 20 and N = 28.
Published: 2012
Full Text: View/download PDF

72. Spectroscopy of26F

Author: F. Azaiez, C. N. Timis, D. Guillemaud-Mueller, M. Stanoiu, G. Sletten, B. A. Brown, P. Roussel-Chomaz, J. Mrazek, Zs. Podolyák, F. Ibrahim, M. G. Porquet, Zs. Fülöp, S. M. Lukyanov, Ch. Bourgeois, Z. Elekes, A. Krasznahorkay, F. Negoita, H. Savajols, M. G. Saint-Laurent, O. Sorlin, S. Grévy, Zs. Dombrádi, János Timár, M. Lewitowicz, Andras Kerek, Yu. E. Penionzhkevich, C. Borcea, Dóra Sohler, 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), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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)-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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-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 de Sciences Nucléaires et de Sciences de la Matière (CSNSM)
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, SHELL model, 13.75.Cs, 13.85.-t, 23.20.Lv, 21.60.Cs, Parity (physics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, medicine.anatomical_structure, Excited state, 0103 physical sciences, medicine, Atomic physics, 010306 general physics, Spectroscopy, Ground state, Nuclear Experiment, Nucleus
Abstract: The structure of the weakly-bound $^{26}_{\;\;9}$F$_{17}$ odd-odd nucleus, produced from $^{27,28}$Na nuclei, has been investigated at GANIL by means of the in-beam $\gamma$-ray spectroscopy technique. A single $\gamma$-line is observed at 657(7) keV in $^{26}_{9}$F which has been ascribed to the decay of the excited J=$2^+$ state to the J=1$^+$ ground state. The possible presence of intruder negative parity states in $^{26}$F is also discussed., Comment: 3 pages, 1 figure, accepted for publication in Physical Review C
Published: 2012
Full Text: View/download PDF

73. Reaction dynamics and nuclear structure of moderately neutron-rich Ne isotopes by heavy-ion reactions

Author: F. Azaiez, N. Marginean, E. Vigezzi, B. Million, G. Pollarolo, R. Orlandi, S. Franchoo, B. Guiot, P. Mason, F. Recchia, G. Montagnoli, S. Bottoni, D. Bazzacco, A. Maj, A. M. Stefanini, E. Sahin, N. Blasi, A. Saltarelli, K. Zuber, F. Camera, E. Farnea, S. Szilner, A. Bracco, E. Fioretto, F. C. L. Crespi, S. Leoni, A. Gadea, C. A. Ur, J. J. Valiente-Dobón, F. Zocca, A. Corsi, J. Wrzesiński, R. Nicolini, G. Benzoni, S. Lunardi, D. Montanari, G. de Angelis, D. R. Napoli, I. Stefan, O. Wieland, Zs. Dombrádi, S. Aydin, D. Mengoni, L. Corradi, Fernando Scarlassara, S. M. Lenzi, Institut de Physique Nucléaire d'Orsay (IPNO), and 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)
Subjects: Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Nuclear Theory, Nuclear structure, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, medicine.anatomical_structure, Reaction dynamics, nuclear reaction, spectrometers, DWBA, 0103 physical sciences, medicine, Neutron, Heavy ion, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment, Nucleus
Abstract: The heavy-ion reaction 22Ne+208Pb at 128 MeV beam energy has been studied using the PRISMA-CLARA experimental setup at Legnaro National Laboratories. Elastic, inelastic, and one-nucleon transfer differential cross sections are measured and global agreement is obtained with semiclassical and distorted-wave Born approximation (DWBA) calculations. In particular, the angular distribution of the 2+ state of 22Ne is analyzed by DWBA and a similar calculation is performed for the unstable 24Ne nucleus, using existing data from the reaction 24Ne+208Pb at 182 MeV (measured at SPIRAL with the VAMOS-EXOGAM setup). In both cases the DWBA model gives a good reproduction of the experiment, pointing to a strong reduction of the β2(C) charge deformation parameter in 24Ne. This follows the trend predicted for the evolution of the quadrupole deformation along the Ne isotopic chain.
Published: 2012
Full Text: View/download PDF

74. Cross sections for one-neutron knock-out from $^{37}$Ca at intermediate energy

Author: G. Benzoni, Zsolt Dombrádi, C. N. Timis, W. Korten, A. Navin, F. Azaiez, D. Verney, S. J. Williams, F. Rotaru, A. Al-Khatib, H. Hübel, M. G. Saint-Laurent, P. Bringel, A. Bürger, Ch. Bourgeois, G. Sletten, P. Roussel Chomaz, O. Sorlin, C Theisen, I. Stefan, R. Borcea, F. Ibrahim, B. Bastin, Zsolt Fülöp, S. Franchoo, J. C. Dalouzy, Alejandro Algora, M. Stanoiu, C. Engelhardt, J. Mrazek, Z. Dlouhý, Dóra Sohler, Andreas Görgen, E. Clément, A. Drouart, S. Grévy, 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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, Valence (chemistry), 010308 nuclear & particles physics, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Momentum, Cross section (physics), Excited state, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment, 25.60.Gc, 23.20.Lv, 27.30.+t, Energy (signal processing), Excitation
Abstract: The cross section for the knock-out of a deeply bound valence neutron from ${}^{37}$Ca at an incident beam energy of $60A\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}$ has been measured along with momentum distributions of the residual nuclei and $\ensuremath{\gamma}$ rays from the de-excitation of the first excited state in ${}^{36}$Ca. As for other cases of deeply bound nucleons studied using knock-out reactions, the reduction of the measured cross section compared to theoretical predictions is stronger than those observed for near-magic stable nuclei. Both the momentum distributions and the excitation energy of the first excited state in ${}^{36}$Ca indicate a sizable $N=16$ gap.
Published: 2012
Full Text: View/download PDF

75. Publisher's Note: In-beam spectroscopic studies of the 44S nucleus [Phys. Rev. C 85, 024311 (2012)]

Author: J. C. Angélique, Z. Elekes, O. Sorlin, I. Stefan, S. Iacob, L. Gaudefroy, A. Drouard, F. Nowacki, Zs. Dombrádi, B. Bastin, L. Caceres, P. Roussel-Chomaz, B. Laurent, Robert Chapman, J. C. Dalouzy, F. Azaiez, Ch. Bourgeois, Dóra Sohler, F. Negoita, D. Baiborodin, N. L. Achouri, M. Stanoiu, E. Liénard, M. G. Saint-Laurent, X. Liang, N. A. Orr, Zs. Podolyák, A. Poves, L. Nalpas, A. Buta, S. Franchoo, M. Lazar, S. Grévy, Y. E. Penionzhkevich, Z. Dlouhy, F. Pougheon, J. Mrazek, A. Bürger, R. Borcea, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), 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)
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, SHELL model, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, medicine.anatomical_structure, 21.60.Cs, 23.20.Lv, 27.40.+z, 99.10.Fg, 0103 physical sciences, medicine, 010306 general physics, Nucleus, Beam (structure)
Abstract: This paper was published online on 15 February 2012 with errors in Figs. 2 and 4. The figures has been replaced as of 28 February 2012. The figures are correct in the printed version of the journal.
Published: 2012
Full Text: View/download PDF

76. In-beam spectroscopic studies of $^{44}$S nucleus

Author: Dóra Sohler, Z. Elekes, L. Nalpas, Z. Dlouhy, P. Roussel-Chomaz, M. Stanoiu, Frédéric Nowacki, N. L. Achouri, X. Liang, N. A. Orr, A. Bürger, Zs. Podolyák, F. Pougheon, J. C. Angélique, Alfredo Poves, F. Negoita, R. Borcea, A. Drouard, S. Grévy, M. G. Saint-Laurent, E. Liénard, L. Caceres, F. Azaiez, O. Sorlin, I. Stefan, J. Mrazek, S. Iacob, Zs. Dombrádi, Ch. Bourgeois, A. Buta, S. Franchoo, B. Bastin, D. Baiborodin, L. Gaudefroy, R. Chapman, Yu. E. Penionzhkevich, J. C. Dalouzy, B. Laurent, M. Lazar, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), UAM. Departamento de Física Teórica, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), and 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)
Subjects: Physics, Nuclear and High Energy Physics, 21.60.Cs, 23.20.Lv, 27.40.+z, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, SHELL model, Foundation (engineering), FOS: Physical sciences, Física, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Beam (structure)
Abstract: The structure of the $^{44}$S nucleus has been studied at GANIL through the one proton knock-out reaction from a $^{45}$Cl secondary beam at 42 A$\cdot$MeV. The $\gamma$ rays following the de-excitation of $^{44}$S were detected in flight using the 70 BaF${_2}$ detectors of the Ch\^{a}teau de Cristal array. An exhaustive $\gamma\gamma$-coincidence analysis allowed an unambiguous construction of the level scheme up to an excitation energy of 3301 keV. The existence of the spherical 2$^+_2$ state is confirmed and three new $\gamma$-ray transitions connecting the prolate deformed 2$^+_1$ level were observed. Comparison of the experimental results to shell model calculations further supports a prolate and spherical shape coexistence with a large mixing of states built on the ground state band in $^{44}$S., Comment: 6 pages, 5 figures, accepted for publication in Physical Review C
Published: 2012
Full Text: View/download PDF

77. AGATA-Advanced GAmma Tracking Array

Author: A. Colombo, Y. Mariette, A. Johnson, W. Korten, A. Brondi, T. Faul, J. Robin, R. Depalo, M. Slee, J. Gre¸bosz, H. C. Boston, H. Harroch, B. Rossé, M. Filliger, M. Gulmini, A. Korichi, S. Brambilla, J.R. Cresswell, C. Parisel, P. Edelbruck, F. Ameil, F. Camera, C. Oziol, Matthew Richard Dimmock, G. Salvato, F. Morbiducci, J. Ropert, M. Borsato, E. Legay, Marco Bellato, C. Santos, Gheorghe Pascovici, L. Charles, J. Pancin, G. Casati, P. G. Bizzeti, T. Stanios, S. Lhenoret, Diego Barrientos, P.M. Jones, Andreas Görgen, V. Chambert, S. Aydin, K. Hauschild, B. Hervieu, R. Nicolini, J. Simpson, H. J. Wollersheim, L. Lavergne, Pär-Anders Söderström, G. S. Simpson, G. Jaworski, F. Filmer, R. Griffiths, P.S. Morrall, M. Petcu, G. Lo Bianco, D. Linget, A. Givechev, D. C. Oxley, M. Kogimtzis, F. Salomon, J. Jolie, D. Wells, S. Moon, C. Aufranc, A. Corsi, T. Descombes, N. Goel, J. Thornhill, N. Warr, Serkan Akkoyun, B. Birkenbach, F. Dorangeville, Joël Chavas, P. Medina, Roberto Isocrate, C. Weber, E. Merchan, Bo Cederwall, I. Kojouharov, Enrique Sanchis, A. Lopez-Martens, Oliver Wieland, F. Le Blanc, D. Seddon, S. C. Letts, D. Bazzacco, J. Leske, B. Bruyneel, Alberto Pullia, L. Nelson, G. La Rana, B. Travers, I. Burrows, G. Maron, S. Coelli, J. J. Valiente-Dobón, F. Saillant, Piotr Bednarczyk, V.L. Ngo, J. Mierzejewski, Norbert Pietralla, R.S. Kempley, N. Kurz, M. Rebeschini, S. Fantinel, D. L. Balabanski, A. J. Boston, F. Tomasi, R. Berthier, M. D. Salsac, B. Dulny, C. Stahl, N. Dosme, C. Fanin, R. Baumann, S. Pietri, A. Astier, M. Nicoletto, J. van der Marel, A. Bracco, Björn Jonson, D. Mengoni, D. Bloor, Luna Pellegri, F. Lefebvre, D. Pugnére, J. Egea, S. Cabaret, D. Curien, M. Reese, C. Commeaux, Dirk Rudolph, A. Giannatiempo, F. Recchia, L. Ramina, A. Lermitage, C. A. Ur, R. M. Lieder, I.P. Brawn, R. Menegazzo, R. Raine, Krasimir Mitev, D. R. Napoli, G. Suliman, M. Kebbiri, Y. Drouen, Susan Rigby, W. Me¸czyński, R. Wadsworth, F. Didierjean, P. Desesquelles, Ch. Veyssiere, S. Leoni, Vicente González, P. Gros, Y. Le Noa, M. Castoldi, O. Möller, R. Orlandi, Thomas Beck, M. Şenyiğit, A. Jungclaus, L. Gibelin, Mohammed Kaci, Zs. Podolyák, J. Gerl, S. Erturk, W. Gast, B. Melon, V. Mendéz, R. Peghin, P. Molini, M. N. Erduran, D. Conventi, Pankaj S. Joshi, E. Clément, F.A. Beck, A. Austin, A. Cortesi, J. Palin, P. Cocconi, L. J. Harkness, F. C. L. Crespi, Dirk Weisshaar, P. Sona, A. Czermak, D. Lersch, N. Blasi, Anton Khaplanov, O. Stezowski, B. Rubio, R. Venturelli, M.-H. Sigward, E. Viscione, José Salt, C. S. Özben, Giancarlo Ripamonti, P. Spolaore, Johan Nyberg, S. M. Lenzi, L. Legeard, N. Redon, C. Rossi Alvarez, C. He, R. Chapman, P. Le Pouhalec, C. Diarra, Herbert Hess, T. Engert, A. Kaşkaş, Stanislav Tashenov, S. Klupp, C. Michelagnoli, Elif Ince, A. Algora, J. F. Smith, M. Ozille, Alessandro Zucchiatti, Angelo Geraci, A. Olariu, M. Labiche, N. Karkour, Stefano Riboldi, P. Bourgault, C. M. Petrache, M. Palacz, M. El Chambit, J.-L. Cercus, M. Zie¸bliński, Alex Wiens, R. Beunard, X. Lafay, T. Habermann, M. Karolak, L. Costa, Y. Aubert, Begoña Quintana, A P Robinson, V. F. E. Pucknell, D. Rosso, A. Capsoni, Emanuele Vardaci, L. Mihailescu, M. Tripon, E. Farnea, Ch. Theisen, Enrico Calore, G. Duchêne, N. V. Zamfir, X. Grave, S. Lunardi, I.H. Lazarus, José Blasco, D. Montanari, J.A. Sampson, P. H. Regan, N. Marginean, M. Pignanelli, L. Arnold, G. Benzoni, R. Krücken, G. de Angelis, D.P. Scraggs, I. Piqueras, D. M. Cullen, A. Obertelli, A. Bürger, D. Bortolato, G. Rainovski, A.R. Mather, P. Reiter, C. Unsworth, G. Baulieu, P. J. Coleman-Smith, C. Boiano, M. Richer, Sébastien Perrier, Agnese Giaz, Reynold J. Cooper, V. Vandone, S. Tanguy, C. Domingo-Pardo, A. Bouty, A. N. Grint, A. Maj, A. Gottardo, L. Berti, E. Pachoud, R. Marginean, E. A. Stefanova, A. Triossi, M. Nespolo, D. Bucurescu, R. Moro, H.T.M. Ha, D. S. Judson, J. L. Tain, A. Perego, Francesco Lelli, P. Detistov, B.Y. Ky, J. Ljungvall, B. Sowicki, M. Schlarb, F. Azaiez, P. Pariset, Ertan Şahin, R. Gernhäuser, M. Turcato, John Paul Strachan, B. Million, A. Atac, F. Carrio, D. Delbourg, F. Veronese, Th. Kröll, B. Cahan, A. Hernandez-Prieto, M. A. Bentley, K.M.M. Tun-Lanoë, B. Alikhani, P. Boutachkov, S. Leboutelier, Maria Doncel, A. M. Bizzeti-Sona, R. Touzery, A. Nannini, A. Lotode, P. J. Nolan, G. Rampazzo, F. Zocca, H. Schaffner, J. Eberth, A. Gadea, N. Toniolo, T. Hüyük, Q.T. Doan, P. Petkov, S. Broussard, S. Badoer, M. Rigato, Philip M Walker, J. Pouthas, Ch. Finck, L. Milechina, M. Norman, E. Pierre, J. Roccaz, S.J. Colosimo, Lázaro Guevara, Glyn Wittwer, Millan, Vicente Gonzalez -- 0000-0001-6014-2586, Rainovski, Georgi -- 0000-0002-1729-0249, Jaworski, Grzegorz -- 0000-0003-2241-0329, KORTEN, Wolfram -- 0000-0002-3940-0816, Domingo-Pardo, Cesar -- 0000-0002-2915-5466, Triossi, Andrea -- 0000-0001-5140-9154, Huyuk, Tayfun -- 0000-0003-0597-9767, Ince, Elif -- 0000-0003-4821-5441, Algora, Alejandro -- 0000-0002-5199-1794, Calore, Enrico -- 0000-0002-2301-3838, Rubio, Berta -- 0000-0002-9149-4151, THEISEN, Christophe -- 0000-0002-8509-1022, Rudolph, Dirk -- 0000-0003-1199-3055, Gadea, Andres -- 0000-0002-4233-1970, santos, cayetano -- 0000-0003-0727-1914, nannini, adriana -- 0000-0003-0659-7648, Depalo, Rosanna -- 0000-0003-3943-7982, Suliman, gabriel -- 0000-0001-8475-1992, Blasco, Jose-Maria -- 0000-0002-7663-9092, Petrache, Costel -- 0000-0001-8419-1390, Pietralla, Norbert -- 0000-0002-4797-3032, Cederwall, Bo -- 0000-0003-1771-2656, Zucchiatti, Alessandro -- 0000-0002-3647-596X, Mendez Munoz, Victor -- 0000-0002-9044-1189, Kruecken, Reiner -- 0000-0002-2755-8042, Napoli, Daniel Ricardo -- 0000-0002-8154-6958, Tain, Jose L. -- 0000-0002-3263-6965, SANCHIS, ENRIQUE -- 0000-0002-9689-9131, Zieblinski, Miroslaw -- 0000-0002-8693-7317, Hauschild, Karl -- 0000-0003-2862-2445, Montanari, Daniele -- 0000-0002-1980-7686, senyigit, menekse -- 0000-0002-2408-4419, La Rana, Giovanni -- 0000-0003-2814-4113, Menegazzo, Roberto -- 0000-0002-3060-5276, Soderstrom, Par-Anders -- 0000-0002-9504-2814, Unsworth, Carl -- 0000-0002-4100-7466, Camera, Franco -- 0000-0003-1731-4834, Gorgen, Andreas -- 0000-0003-1916-9941, Hernandez Prieto, Alvaro -- 0000-0002-0340-0240, Recchia, Francesco -- 0000-0002-8428-0112, de France, Gilles -- 0000-0002-7439-1759, GOTTARDO, Andrea -- 0000-0002-0390-5767, Perrier, Sebastien -- 0000-0001-5055-9046, Sowicki, Bogdan -- 0000-0002-7208-0690, Robinson, Andrew -- 0000-0002-2510-1321, Sahin, Eda -- 0000-0003-0683-5140, Pullia, Alberto -- 0000-0002-6393-747X, Lelli, Francesco -- 0000-0003-1900-9171, Clement, Emmanuel -- 0000-0003-1887-717X, benzoni, giovanna -- 0000-0002-7938-0338, Jonson, Bjorn -- 0000-0002-9697-9115, Bednarczyk, Piotr -- 0000-0002-5699-5292, Jones, Pete -- 0000-0001-7480-6603, Nicoletto, Marino -- 0000-0001-9301-0782, Ripamonti, Giancarlo -- 0000-0002-9406-021X, Bentley, Michael -- 0000-0001-8401-3455, Pellegri, Luna -- 0000-0002-3227-3332, Barrientos, Diego -- 0000-0001-9693-2942, GIAZ, Agnese -- 0000-0002-2550-450X, [Boston, A. J. -- Boston, H. C. -- Colosimo, S. -- Cooper, R. J. -- Cresswell, J. R. -- Dimmock, M. R. -- Filmer, F. -- Grint, A. N. -- Harkness, L. J. -- Judson, D. S. -- Mather, A. R. -- Moon, S. -- Nelson, L. -- Nolan, P. J. -- Norman, M. -- Oxley, D. C. -- Rigby, S. -- Sampson, J. -- Scraggs, D. P. -- Seddon, D. -- Slee, M. -- Stanios, T. -- Thornhill, J. -- Unsworth, C. -- Wells, D.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Akkoyun, S. -- Atac, A. -- Kaskas, A. -- Senyigit, M.] Ankara Univ, Fac Sci, Dept Phys, TR-06100 Ankara, Turkey -- [Algora, A. -- Barrientos, D. -- Domingo-Pardo, C. -- Egea, J. -- Gadea, A. -- Hueyuek, T. -- Kaci, M. -- Mendez, V. -- Rubio, B. -- Salt, J. -- Tain, J. L.] Univ Valencia, CSIC, IFIC, E-46980 Paterna, Spain -- [Alikhani, B. -- Boutachkov, P. -- Givechev, A. -- Goel, N. -- Leske, J. -- Merchan, E. -- Moeller, O. -- Pietralla, N. -- Reese, M. -- Stahl, C.] Tech Univ Darmstadt, IKP, D-64289 Darmstadt, Germany -- [Ameil, F. -- Beck, T. -- Boutachkov, P. -- Domingo-Pardo, C. -- Engert, T. -- Gerl, J. -- Goel, N. -- Habermann, T. -- Kojouharov, I. -- Kurz, N. -- Merchan, E. -- Pietri, S. -- Schaffner, H. -- Tashenov, S. -- Wollersheim, H. J.] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany -- [de Angelis, G. -- Badoer, S. -- Berti, L. -- Calore, E. -- Cocconi, P. -- Conventi, D. -- Costa, L. -- Fantinel, S. -- Gadea, A. -- Gottardo, A. -- Gulmini, M. -- He, C. -- Ince, E. -- Kroell, Th. -- Lelli, F. -- Maron, G. -- Molini, P. -- Napoli, D. R. -- Rigato, M. -- Rosso, D. -- Sahin, E. -- Spolaore, P. -- Toniolo, N. -- Valiente-Dobon, J. J.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, IT-35020 Padua, Italy -- [Arnold, L. -- Baumann, R. -- Beck, F. A. -- El Chambit, M. -- Charles, L. -- Curien, D. -- Didierjean, F. -- Duchene, G. -- Faul, T. -- Filliger, M. -- Finck, Ch. -- Medina, P. -- Pachoud, E. -- Parisel, C. -- Piqueras, I. -- Richer, M. -- Robin, J. -- Santos, C. -- Sigward, M. -H. -- Weber, C.] Univ Strasbourg, IPHC, F-67037 Strasbourg, France -- [Arnold, L. -- Baumann, R. -- Beck, F. A. -- El Chambit, M. -- Charles, L. -- Curien, D. -- Didierjean, F. -- Duchene, G. -- Faul, T. -- Filliger, M. -- Finck, Ch. -- Medina, P. -- Pachoud, E. -- Parisel, C. -- Piqueras, I. -- Richer, M. -- Robin, J. -- Santos, C. -- Sigward, M. -H. -- Weber, C.] CNRS, UMR 7178, F-67037 Strasbourg, France -- [Astier, A. -- Cabaret, S. -- Desesquelles, P. -- Dosme, N. -- Gibelin, L. -- Ha, H. T. M. -- Hauschild, K. -- Karkour, N. -- Korichi, A. -- Lafay, X. -- Leboutelier, S. -- Legay, E. -- Lhenoret, S. -- Linget, D. -- Ljungvall, J. -- Lopez-Martens, A. -- Morbiducci, F. -- Ngo, V. L. -- Pariset, P. -- Perrier, S. -- Pierre, E. -- Roccaz, J. -- Travers, B.] Univ Paris 11, CNRS, IN2P3, CSNSM, F-91405 Orsay, France -- [Atac, A. -- Nyberg, J. -- Soderstrom, P. -A.] Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden -- [Atac, A. -- Cederwall, B. -- Johnson, A. -- Khaplanov, A. -- van der Marel, J. -- Milechina, L. -- Tashenov, S.] Royal Inst Technol, SE-10691 Stockholm, Sweden -- [Aubert, Y. -- Azaiez, F. -- Le Blanc, F. -- Cercus, J. -L. -- Chambert, V. -- Commeaux, C. -- Delbourg, D. -- Diarra, C. -- Dorangeville, F. -- Edelbruck, P. -- Grave, X. -- Guevara, L. -- Harroch, H. -- Ky, B. Y. -- Lavergne, L. -- Lefebvre, F. -- Lermitage, A. -- Olariu, A. -- Oziol, C. -- Petrache, C. -- Pouthas, J. -- Salomon, F. -- Tanguy, S. -- Tun-Lanoe, K. M. M.] Univ Paris 11, CNRS, IN2P3, IPNO, F-91406 Orsay, France -- [Aufranc, C. -- Baulieu, G. -- Doan, Q. T. -- Pugnere, D. -- Redon, N. -- Rosse, B. -- Stezowski, O.] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France -- [Austin, A. -- Burrows, I. -- Coleman-Smith, P. J. -- Griffiths, R. -- Kogimtzis, M. -- Labiche, M. -- Lazarus, I. H. -- Letts, S. C. -- Morrall, P. S. -- Palin, J. -- Pucknell, V. F. E. -- Simpson, J. -- Strachan, J.] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Aydin, S. -- Bazzacco, D. -- Bellato, M. -- Bortolato, D. -- Chavas, J. -- Colombo, A. -- Fanin, C. -- Farnea, E. -- Isocrate, R. -- Kroell, Th. -- Lenzi, S. M. -- Lunardi, S. -- Marginean, R. -- Menegazzo, R. -- Mengoni, D. -- Michelagnoli, C. -- Nespolo, M. -- Nicoletto, M. -- Peghin, R. -- Ramina, L. -- Rampazzo, G. -- Rebeschini, M. -- Recchia, F. -- Rossi Alvarez, C. -- Salvato, G. -- Triossi, A. -- Turcato, M. -- Ur, C. A. -- Venturelli, R. -- Veronese, F.] Ist Nazl Fis Nucl, Sez Padova, IT-35131 Padua, Italy -- [Balabanski, D. L. -- Detistov, P. -- Petkov, P. -- Stefanova, E.] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria -- [Bednarczyk, P. -- Czermak, A. -- Dulny, B. -- Grebosz, J. -- Maj, A. -- Meczynski, W. -- Sowicki, B. -- Zieblinski, M.] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland -- [Bentley, M. A. -- Bloor, D. -- Joshi, P. -- Wadsworth, R.] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England -- [Benzoni, G. -- Blasi, N. -- Boiano, C. -- Bracco, A. -- Brambilla, S. -- Camera, F. -- Capsoni, A. -- Casati, G. -- Coelli, S. -- Corsi, A. -- Cortesi, A. -- Crespi, F. C. L. -- Geraci, A. -- Giaz, A. -- Leoni, S. -- Million, B. -- Montanari, D. -- Nicolini, R. -- Pellegri, L. -- Pignanelli, M. -- Pullia, A. -- Riboldi, S. -- Ripamonti, G. -- Tomasi, F. -- Vandone, V. -- Viscione, E. -- Wieland, O. -- Zocca, F.] Ist Nazl Fis Nucl, Sez Milano, IT-20133 Milan, Italy -- [Berthier, R. -- Bouty, A. -- Broussard, S. -- Buerger, A. -- Drouen, Y. -- Gros, P. -- Goergen, A. -- Hervieu, B. -- Karolak, M. -- Kebbiri, M. -- Korten, W. -- Ljungvall, J. -- Lotode, A. -- Mariette, Y. -- Le Noa, Y. -- Obertelli, A. -- Le Pouhalec, P. -- Salsac, M. -D. -- Theisen, Ch. -- Touzery, R. -- Veyssiere, Ch.] CEA, Ctr Saclay, IRFU, F-91191 Gif Sur Yvette, France -- [Beunard, R. -- Bourgault, P. -- Cahan, B. -- Clement, E. -- de France, G. -- Legeard, L. -- Ozille, M. -- Pancin, J. -- Raine, R. -- Ropert, J. -A. -- Saillant, F. -- Tripon, M. -- Wittwer, G.] CEA DSM CNRS IN2P3, GANIL, F-14076 Caen, France -- [Birkenbach, B. -- Bruyneel, B. -- Eberth, J. -- Hess, H. -- Jolie, J. -- Lersch, D. -- Pascovici, G. -- Reiter, P. -- Warr, N. -- Weisshaar, D. -- Wiens, A.] Univ Cologne, IKP, D-50937 Cologne, Germany -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M. -- Giannatiempo, A. -- Melon, B. -- Perego, A. -- Sona, P.] Univ Florence, Dipartimento Fis & Astron, IT-50019 Florence, Italy -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M. -- Giannatiempo, A. -- Melon, B. -- Nannini, A. -- Perego, A. -- Sona, P.] Ist Nazl Fis Nucl, Sez Firenze, IT-50019 Florence, Italy -- [Blasco, J. M. -- Carrio, F. -- Egea, J. -- Gonzalez, V. -- Sanchis, E.] Univ Valencia, Dept Elect Engn, E-46100 Burjassot, Valencia, Spain -- [Borsato, M. -- Bortolato, D. -- Lenzi, S. M. -- Lunardi, S. -- Marginean, R. -- Mengoni, D. -- Michelagnoli, C. -- Nespolo, M. -- Recchia, F. -- Salvato, G. -- Triossi, A. -- Venturelli, R.] Univ Padua, Dipartimento Fis, IT-35131 Padua, Italy -- [Bracco, A. -- Camera, F. -- Corsi, A. -- Crespi, F. C. L. -- Giaz, A. -- Leoni, S. -- Montanari, D. -- Nicolini, R. -- Pellegri, L. -- Pignanelli, M. -- Pullia, A. -- Riboldi, S. -- Vandone, V.] Univ Milan, Dipartimento Fis, IT-20133 Milan, Italy -- [Brawn, I. P.] STFC Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England -- [Brondi, A. -- Moro, R. -- La Rana, G. -- Vardaci, E.] Univ Naples Federico II, Dipartimento Fis, IT-80126 Naples, Italy -- [Brondi, A. -- Moro, R. -- La Rana, G. -- Vardaci, E.] Ist Nazl Fis Nucl, Sez Napoli, IT-80126 Naples, Italy -- [Bucurescu, D. -- Marginean, N. -- Marginean, R. -- Petcu, M. -- Ur, C. A.] Natl Inst Phys & Nucl Engn, Bucharest, Romania -- [Buerger, A. -- Suliman, G. -- Zamfir, N. V.] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany -- [Buerger, A.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway -- [Casati, G. -- Geraci, A. -- Ripamonti, G.] Politecn Milan, Dipartimento Elettron & Informaz, IT-20133 Milan, Italy -- [Castoldi, M. -- Zucchiatti, A.] Ist Nazl Fis Nucl, Sez Genova, IT-16146 Genoa, Italy -- [Chapman, R. -- Mengoni, D. -- Orlandi, R. -- Smith, J. F.] Univ W Scotland, Sch Engn, Paisley PA1 2BE, Renfrew, Scotland -- [Cullen, D. M. -- Robinson, A. P.] Univ Manchester, Sch Phys & Astron, Schuster Lab, Manchester M13 9PL, Lancs, England -- [Depalo, R.] Univ Padua, Dipartimento Astron, IT-35131 Padua, Italy -- [Descombes, T. -- Simpson, G.] Univ Grenoble 1, CNRS, IN2P3, LPSC,INP Grenoble, F-38026 Grenoble, France -- [Doncel, M. -- Hernandez-Prieto, A. -- Quintana, B.] Univ Salamanca, Dept Fis Fundamental, E-37008 Salamanca, Spain -- [Erduran, M. N. -- Ince, E.] Istanbul Univ, Istanbul, Turkey -- [Erturk, S.] Nigde Univ, Fac Sci, Dept Phys, TR-51200 Nigde, Turkey -- [Gast, W. -- Lieder, R. M. -- Mihailescu, L.] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany -- [Gernhaeuser, R. -- Klupp, S. -- Kruecken, R. -- Schlarb, M.] Tech Univ Munich, Phys Dept E12, D-85748 Garching, Germany -- [Jaworski, G.] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland -- [Jaworski, G. -- Mierzejewski, J. -- Palacz, M.] Univ Warsaw, Heavy Ion Lab, PL-02093 Warsaw, Poland -- [Jones, P.] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland -- [Jonson, B.] Chalmers, S-41296 Gothenburg, Sweden -- [Jungclaus, A. -- Orlandi, R.] CSIC, Inst Estruct Mat, E-28006 Madrid, Spain -- [Kempley, R. S. -- Podolyak, Z. -- Regan, P. H. -- Walker, P. M.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England -- [Mitev, K. -- Rainovski, G.] Sofia Univ St Kliment Ohridski, Fac Phys, Sofia, Bulgaria -- [Ozben, C.] Istanbul Tech Univ, TR-80626 Istanbul, Turkey -- [Rudolph, D.] Lund Univ, Dept Phys, SE-22100 Lund, Sweden, Research Group: Information Management, CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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 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 de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Institut de Physique Nucléaire d'Orsay (IPNO), informatique, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique Nucléaire (ex SPhN) (DPHN), 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, CSNSM MECA, 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 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), CSNSM INFOR, CSNSM ELEC, Matière Nucléaire, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), AGATA, Akkoyun, S., Algora, A., Alikhani, B., Ameil, F., De Angelis, G, Arnold, L., Astier, A., Ataç, A., Aubert, Y., Aufranc, C., Austin, A., Aydin, S., Azaiez, F., Badoer, S., Balabanski, D. L., Barrientos, D., Baulieu G., L, Baumann, R., Bazzacco, D., Beck, F. A., Beck, T., Bednarczyk, P., Bellato, M., Bentley, M. A., Benzoni, G., Berthier, R., Berti, L., Beunard, R., Lo Bianco, G., Birkenbach, B., Bizzeti, P. G., Bizzeti Sona, A. M., Le Blanc, F., Blasco, J. M., Blasi, N., Bloor, D., Boiano, C., Borsato, M., Bortolato, D., Boston, A. J., Boston, H. C., Bourgault, P., Boutachkov, P., Bouty, A., Bracco, A., Brambilla, S., Brawn, I. P., Brondi, Augusto, Broussard, S., Bruyneel, B., Bucurescu, D., Burrows, I., Bürger, A., Cabaret, S., Cahan, B., Calore, E., Camera, F., Capsoni, A., Carrió, F., Casati, G., Castoldi, M., Cederwall, B., Cercus J., L, Chambert, V., El Chambit, M., Chapman, R., Charles, L., Chavas, J., Clément, E., Cocconi, P., Coelli, S., Coleman Smith, P. J., Colombo, A., Colosimo, S., Commeaux, C., Conventi, D., Cooper, R. J., Corsi, A., Cortesi, A., Costa, L., Crespi, F. C. L., Cresswell, J. R., Cullen, D. M., Curien, D., Czermak, A., Delbourg, D., Depalo, R., Descombes, T., Désesquelles, P., Detistov, P., Diarra, C., Didierjean, F., Dimmock, M. R., Doan, Q. T., Domingo Pardo, C., Doncel, M., Dorangeville, F., Dosme, N., Drouen, Y., Duchêne, G., Dulny, B., Eberth, J., Edelbruck, P., Egea, J., Engert, T., Erduran, M. N., Ertürk, S., Fanin, C., Fantinel, S., Farnea, E., Faul, T., Filliger, M., Filmer, F., Finck, C., De France, G., Gadea, A., Gast, W., Geraci, A., Gerl, J., Gernhäuser, R., Giannatiempo, A., Giaz, A., Gibelin, L., Givechev, A., Goel, N., González, V., Gottardo, A., Grave, X., Grȩbosz, J., Griffiths, R., Grint, A. N., Gros, P., Guevara, L., Gulmini, M., Görgen, A., Ha, H. T. M., Habermann, T., Harkness, L. J., Harroch, H., Hauschild, K., He, C., Hernández Prieto, A., Hervieu, B., Hess, H., Hüyük, T., Ince, E., Isocrate, R., Jaworski, G., Johnson, A., Jolie, J., Jones, P., Jonson, B., Joshi, P., Judson, D. S., Jungclaus, A., Kaci, M., Karkour, N., Karolak, M., Kaşkaş, A., Kebbiri, M., Kempley, R. S., Khaplanov, A., Klupp, S., Kogimtzis, M., Kojouharov, I., Korichi, A., Korten, W., Kröll, T., Krücken, R., Kurz, N., Ky, B. Y., Labiche, M., Lafay, X., Lavergne, L., Lazarus, I. H., Leboutelier, S., Lefebvre, F., Legay, E., Legeard, L., Lelli, F., Lenzi, S. M., Leoni, S., Lermitage, A., Lersch, D., Leske, J., Letts, S. C., Lhenoret, S., Lieder, R. M., Linget, D., Ljungvall, J., Lopez Martens, A., Lotodé, A., Lunardi, S., Maj, A., Van Der Marel, J., Mariette, Y., Marginean, N., Marginean, R., Maron, G., Mather, A. R., Mȩczyński, W., Mendéz, V., Medina, P., Melon, B., Menegazzo, R., Mengoni, D., Merchan, E., Mihailescu, L., Michelagnoli, C., Mierzejewski, J., Milechina, L., Million, B., Mitev, K., Molini, P., Montanari, D., Moon, S., Morbiducci, F., Moro, RENATA EMILIA MARIA, Morrall, P. S., Möller, O., Nannini, A, Napoli, D. R., Nelson, L., Nespolo, M., Ngo, V. L., Nicoletto, M., Nicolini, R., Le Noa, Y., Nolan, P. J., Norman, M., Nyberg, J., Obertelli, A., Olariu, A., Orlandi, R., Oxley, D. C., Özben, C., Ozille, M., Oziol, C., Pachoud, E., Palacz, M., Palin, J., Pancin, J., Parisel, C., Pariset, P., Pascovici, G., Peghin, R., Pellegri, L., Perego, A., Perrier, S., Petcu, M., Petkov, P., Petrache, C., Pierre, E., Pietralla, N., Pietri, S., Pignanelli, M., Piqueras, I., Podolyak, Z., Le Pouhalec, P., Pouthas, J., Pugnére D., L, Pucknell, V. F. E., Pullia, A., Quintana, B., Raine, R., Rainovski, G., Ramina, L., Rampazzo, G., LA RANA, Giovanni, Rebeschini, M., Recchia, F., Redon N., L, Reese M., C, Reiter, P., Regan, P. H., Riboldi, S., Richer, M., Rigato, M., Rigby, S., Ripamonti, G., Robinson, A., Robin, J., Roccaz, J., Ropert, J. A., Rossé, B. l., Rossi Alvarez, C., Rosso, D., Rubio, B., Rudolph, D., Saillant, F., Şahin, E., Salomon, F., Salsac, M. D., Salt, J., Salvato, G., Sampson, J., Sanchis, E., Santos, C., Schaffner, H., Schlarb, M., Scraggs, D. P., Seddon, D., Şenyiǧit, M., Sigward, M. H., Simpson, G., Simpson, J., Slee, M., Smith, J. F., Sona, P., Sowicki, B., Spolaore, P., Stahl, C., Stanios, T., Stefanova, E., Stézowski, O., Strachan, J., Suliman, G., Söderström, P. A., Tain, J. L., Tanguy, S., Tashenov, S., Theisen, C. h., Thornhill, J., Tomasi, F., Toniolo, N., Touzery, R., Travers, B., Triossi, A., Tripon, M., Tun Lanoë, K. M. M., Turcato, M., Unsworth, C., Ur, C. A., Valiente Dobon, J. J., Vandone, V., Vardaci, Emanuele, Venturelli, R., Veronese, F., Veyssiere, C., Viscione, E., Wadsworth, R., Walker, P. M., Warr, N., Weber, C., Weisshaar, D., Wells, D., Wieland, O., Wiens A., U, Wittwer, G., Wollersheim, H. J., Zocca, F., Zamfir, N. V., Ziȩbliński, M., Zucchiatti, A., 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)-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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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 National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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)-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 polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and 0-Belirlenecek
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Pulse-shape and gamma-ray tracking algorithms, FOS: Physical sciences, Semiconductor detector performance and simulations, Integrated circuit, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Tracking (particle physics), gamma-Ray tracking, 01 natural sciences, Pulse-shape and γ-ray tracking algorithms, law.invention, Data acquisition, law, 0103 physical sciences, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment (nucl-ex), 010306 general physics, γ-Ray spectroscopy, Nuclear Experiment, Instrumentation, Digital signal processing, Event reconstruction, gamma-Ray spectroscopy, Physics, sezele, Spectrometer, Spectrometers, 010308 nuclear & particles physics, business.industry, Detector, AGATA, Digital signals, HPGe detectors, Pulse-shape, Ray tracking, HPGe detectors, Algorithms, Crystals, Germanium, Semiconductor detectors, Signal processing, Spectrometry, Tracking (position), γ-Ray tracking, Instrumentation and Detectors (physics.ins-det), AGATA, Física nuclear, business, Computer hardware
Abstract: WOS: 000300864200005, The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. Reconstruction of the full interaction path results in a detector with very high efficiency and excellent spectral response. The realisation of gamma-ray tracking and AGATA is a result of many technical advances. These include the development of encapsulated highly segmented germanium detectors assembled in a triple cluster detector cryostat, an electronics system with fast digital sampling and a data acquisition system to process the data at a high rate. The full characterisation of the crystals was measured and compared with detector-response simulations. This enabled pulse-shape analysis algorithms, to extract energy, time and position, to be employed. In addition, tracking algorithms for event reconstruction were developed. The first phase of AGATA is now complete and operational in its first physics campaign. In the future AGATA will be moved between laboratories in Europe and operated in a series of campaigns to take advantage of the different beams and facilities available to maximise its science output. The paper reviews all the achievements made in the AGATA project including all the necessary infrastructure to operate and support the spectrometer. (C) 2011 Elsevier B.V. All rights reserved., EU [RII3-CT-2004-506065]; German BMBF [06K-167, 06KY2051]; Swedish Research Council; Knut and Alice Wallenberg Foundation; UK EPSRC Engineering and Physical Sciences Research Council; UK STFC Science and Technology Facilities Council; AWE plc; Scientific and Technological Research Council of Turkey [106T055]; Ankara University [05B4240002]; Polish Ministry of Science and Higher Education [DPN/N190/AGATA/2009]; Spanish MICINN [FPA2008-06419, FPA2009-13377-C02-02]; Spanish Consolider-Ingenio Programme CPAN [CSD2007-00042]; Generalitat Valenciana [PROMETEO/2010/101]; MICINN, Spain; INFN, Italy [AIC10-D-000568]; Science and Technology Facilities Council [ST/F012039/1, ST/J000094/1, ST/F004192/1, ST/J000159/1, ST/I504940/1, NuSTAR, ST/F006950/1, ST/I504916/1, ST/G000670/1, ST/F004060/1, ST/J000051/1, ST/J000108/1, ST/G000670/1 NuSTAR, ST/I504959/1, ST/G000727/1, ST/F004052/1, ST/F004184/1], AGATA and this work is supported by the European funding bodies and the EU Contract RII3-CT-2004-506065, the German BMBF under Grants 06K-167 and 06KY2051, the Swedish Research Council and the Knut and Alice Wallenberg Foundation, UK EPSRC Engineering and Physical Sciences Research Council, UK STFC Science and Technology Facilities Council, AWE plc, Scientific and Technological Research Council of Turkey (Proj. nr. 106T055) and Ankara University (BAP Proj. nr. 05B4240002), the Polish Ministry of Science and Higher Education under Grant DPN/N190/AGATA/2009, the Spanish MICINN under grants FPA2008-06419 and FPA2009-13377-C02-02, the Spanish Consolider-Ingenio 2010 Programme CPAN (contract number CSD2007-00042) the Generalitat Valenciana under Grant PROMETEO/2010/101, and research performed in the frame of the GSI-IN2P3 collaboration agreement number 02-42. A. Gadea and E. Farnea acknowledge the support of MICINN, Spain, and INFN, Italy, through the AIC10-D-000568 bilateral action.
Published: 2012
Full Text: View/download PDF

78. M1 transitions between superdeformed states in 195Tl: the fingerprint of the proton intruder orbital

Author: M. Aïche, R. Duffait, I. Deloncle, A. Korichi, F. Hannachi, M. G. Porquet, R. Wadsworth, C. Bourgeois, R. M. Clark, F. Azaiez, Malcolm J. Joyce, N. Perrin, J. Simpson, C. W. Beausang, I. M. Hibbert, N. Poffé, W.H. Kelly, Josette Duprat, S.J. Gale, J.F. Sharpey-Schafer, B. J. P. Gall, M. Kaci, H. Sergolle, M. Meyer, N. Redon, Y. Le Coz, and C. Schück
Subjects: Physics, Nuclear and High Energy Physics, Dipole, Photon, Spectrometer, Yrast, Nuclear Theory, Quadrupole, Atomic physics, Nuclear Experiment, Excitation
Abstract: Dipole transitions linking the superdeformed Yrast signature-partner bands in 195Tl have been observed using the EUROGAM 1 spectrometer. From the measurements of the photon decay branching ratios, taken together with the average quadrupole moment measured in neighbouring superdeformed nuclei, we find that the two signature partner superdeformed bands involve the excitation of the 81 st proton into the i 13 2 Ω= 5 2 intruder orbital
Published: 1994
Full Text: View/download PDF

79. The N = 7 unfavoured superdeformed band in 193Hg; coriolis splitting and neutron shell structure at extreme deformation

Author: C. A. Kalfas, J.F. Sharpey-Schafer, P.M. Jones, C. Schück, A. Korichi, P.D. Forsyth, N. Fotiades, C. W. Beausang, R. M. Clark, F. Azaiez, Y. Le Coz, Witold Nazarewicz, P. J. Dagnall, Sotirios Harissopulos, S.J. Gale, I. Deloncle, M. G. Porquet, D. M. Cullen, F. Hannachi, R. Vlastou, K. Hauschild, E. S. Paul, R. Wadsworth, P. Fallon, N. Redon, J. Simpson, Malcolm J. Joyce, M. Meyer, M. A. Riley, B. J. P. Gall, and Josette Duprat
Subjects: Physics, Nuclear and High Energy Physics, Mean field theory, Atomic orbital, Deformation (mechanics), Nuclear Theory, Neutron, Atomic physics, Nuclear Experiment
Abstract: A new superdeformed band is reported in 193Hg which has properties that are consistent with it being based on the unfavoured N = 7 (π, α) = (−, +12) intruder orbital. The signature splitting at hω = 200 keV of this intruder orbital and its favoured (−, −12) partner is estimated to be 160±30 keV, which is in agreement with cranked mean field calculations. This band completes the set of low-lying quasi-neutron orbitals predicted to be at the N = 113 superdeformed Fermi-surface. The previously known superdeformed bands in 193Hg have been extended to higher rotational frequencies, hω ⩾ 0.40 MeV.
Published: 1994
Full Text: View/download PDF

80. Spectrum ofγRays Connecting Superdeformed and Normal States inHg192

Author: F. Azaiez, N. Perrin, Y Lecoz, Marco Meyer, Ch. Bourgeois, C. Schück, P. Willsau, J. J. Simpson, A. Korichi, T. L. Khoo, Malcolm J. Joyce, A. G. Smith, T. Lauritsen, E. S. Paul, R. V. F. Janssens, B. J. P. Gall, N. Poffé, I. Deloncle, H. Sergolle, H. Hübel, R. G. Henry, M. P. Carpenter, N. Redon, J.F. Sharpey-Schafer, Thomas Døssing, Mohammed Kaci, B. Crowell, C. W. Beausang, M. G. Porquet, Iftikhar Ahmad, R. Béraud, F. Hannachi, Josette Duprat, R. M. Clark, and R. Wadsworth
Subjects: Coupling, Physics, Isotope, Spectrum (functional analysis), Nuclear structure, Gamma ray, General Physics and Astronomy, Atomic physics, Electromagnetic radiation, Spectral line, Excitation
Abstract: The complete spectrum of [gamma] rays following the decay of superdeformed (SD) states in [sup 192]Hg has been extracted. The spectrum, which comprises a quasicontinuous component and sharp lines, reveals the decay mechanism and defines the excitation energies of the SD band. The decay of SD states results from the coupling between a cold, ordered SD system with a hot, chaotic one with normal deformation.
Published: 1994
Full Text: View/download PDF

81. Two proton high-spin excitations and dipole bands in192Hg

Author: Y. Le Coz, N. Redon, A. Astier, R. Béraud, R. Duffait, M. Meyer, F. Hannachi, G. Bastin, I. Deloncle, B. Gall, M. Kaci, M. G. Porquet, C. Schück, F. Azaiez, C. Bourgeois, J. Duprat, A. Korichi, N. Perrin, N. Poffé, H. Sergolle, J. F. Sharpey-Schafer, C. W. Beausang, S. J. Gale, M. J. Joyce, E. S. Paul, R. M. Clark, K. Hauschild, R. Wadsworth, J. Simpson, M. A. Bentley, A. G. Smith, H. Hübel, P. Willsau, G. De France, I. Ahmad, M. Carpenter, R. Henry, R. V. F. Janssens, T. L. Khoo, T. Lauritsen, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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), Institut de Physique Nucléaire d'Orsay (IPNO), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), and Flores, Sylvie
Subjects: Physics, Nuclear and High Energy Physics, Proton, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Dipole, medicine.anatomical_structure, 0103 physical sciences, medicine, Nuclear fusion, Atomic physics, Nuclear Experiment, 010306 general physics, Spin (physics), Beam energy, Nucleus, Excitation
Abstract: The192Hg nucleus was populated in the160Gd(36S, 4n) reaction at a beam energy of E=159 MeV. Emittedγ-rays were detected with the EUROGAM array comprising 43 Compton-suppressed large volume Ge detectors. The level scheme of192Hg has been extended up to an excitation energy of E=10.4 MeV and spin I=34 ħ. Two new structures, made of competing ΔI=1 and ΔI=2 transitions have been observed and their connexions with the low-lying levels established. Their lowest levels are located at 6.304 MeV and 6.879 MeV excitation energy. The experimental results are compared with mean-field HF+BCS calculations. It is proposed that the new structures originate from deformation-aligned quasi-proton excitations π(i13/2 * h9/2)K=11 andπ (h9/2) K=8 2 , coupled to rotation-aligned quasi-neutron ν(i13/2)n and quasi-proton π(h11/2)2 excitations.
Published: 1994
Full Text: View/download PDF

82. Two-proton high-K oblate structures in194Pb

Author: F. Azaiez, N. Perrin, A. Korichi, V Brindejonc, I. Deloncle, R. Wadsworth, J. Simpson, Malcolm J. Joyce, A. Astier, Marco Meyer, G. Bastin, B. J. P. Gall, F. Hannachi, Josette Duprat, C. Bourgeois, R. M. Clark, J.F. Sharpey-Schafer, M. G. Porquet, N. Redon, A. G. Smith, C. W. Beausang, N. Poffé, H. Sergolle, Y. Le Coz, and C. Schück
Subjects: Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Isotone, Moment of inertia, 01 natural sciences, Dipole, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Spin (physics), Excitation, High-κ dielectric
Abstract: Two regular dipole gamma -ray cascades have been observed in 194Pb. A comprehensive level scheme related to these structures has been built and first members of rotational bands built on K=8 and K=11 two-proton oblate states have been identified. From the excitation energies, spin values, behaviours of the moments of inertia and alignments, and from the comparison with the isotone 192Hg, multiparticle configurations can be attributed to three high-spin structures of 194Pb built respectively on the 4966 keV, 4334 keV and 6198 keV levels: ( pi 9/2(505) pi 13/2(606))(vi13/2)2, ( pi 9/2(505) pi 13/2(606))(vf5/2vi13/2), ( pi 9/2(505) pi 13/2(606)) (vf5/2(vi13/2)3). Within this interpretation, the regular dipole bands correspond to the presence of two or three i13/2 decoupled neutrons.
Published: 1994
Full Text: View/download PDF

83. Medium-spin states in neutron-rich83As and81As

Author: A. A. Bogachev, O. Stezowski, A. Astier, G. Duchêne, Ts. Venkova, F. Azaiez, B. J. P. Gall, M. Rousseau, O. Dorvaux, F. Khalfallah, Marco Meyer, Marie-Geneviève Porquet, D. Verney, D. Curien, I. Deloncle, I. Piqueras, A. Buta, and N. Redon
Subjects: Physics, Nuclear and High Energy Physics, Spin states, 010308 nuclear & particles physics, Yrast, 01 natural sciences, Excited state, 0103 physical sciences, Quasiparticle, Neutron, Atomic physics, 010306 general physics, Energy (signal processing), Excitation, Spin-½
Abstract: The ${}^{83,81}\phantom{\rule{-0.16em}{0ex}}$As nuclei have been produced as fission fragments in the fusion reaction ${}^{18}$O + ${}^{208}$Pb at 85 MeV bombarding energy and studied with the Euroball array. Medium-spin states of ${}^{83,81}\phantom{\rule{-0.16em}{0ex}}$As have been established up to $\ensuremath{\sim}3.5$ MeV excitation energy. From angular correlation analysis, spin values have been assigned to most of the ${}^{81}\phantom{\rule{-0.16em}{0ex}}$As excited states. The behaviors of the yrast structures identified in this work are discussed in comparison with the general features known in the mass region. Then they are compared to the results of two theoretical approaches: the ``rotor + quasiparticle'' for ${}^{81}\phantom{\rule{-0.16em}{0ex}}$As and the shell model using the effective interactions JUN45 for ${}^{83,81}\phantom{\rule{-0.16em}{0ex}}\phantom{\rule{-0.16em}{0ex}}$As.
Published: 2011
Full Text: View/download PDF

84. Collectivity inS41

Author: A. Hodsdon, Alick Deacon, A. Gadea, A. Jungclaus, Zsolt Dombrádi, F. Ibrahim, David O'Donnell, F. Haas, Robert Chapman, G. Pollarolo, M. Trotta, A. M. Stefanini, M. D. Salsac, Z. M. Wang, A. Latina, Fernando Scarlassara, A. Papenberg, M. Burns, X. Liang, B. R. Behera, K. M. Spohr, F. Azaiez, V. Kumar, Suzana Szilner, J. F. Smith, M. Stanoiu, L. Corradi, D. Verney, E. Farnea, D. R. Napoli, G. Montagnoli, J. Ollier, D. Curien, E. Fioretto, K. Keyes, and N. Marginean
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Yrast, Context (language use), Coulomb excitation, 01 natural sciences, Charged particle, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Nucleon, Excitation
Abstract: Yrast states in the neutron-rich S41 nucleus have been studied using binary grazing reactions produced by the interaction of a 215-MeV beam of S36 ions with a thin Pb208 target. The magnetic spectrometer, PRISMA, and the γ-ray array, CLARA, were used in the measurements. γ-ray transitions of energy 449 and 638 keV were observed. Results from published intermediate-energy Coulomb excitation measurements in combination with those from the present work have led to the construction of a new S41 level scheme. Proposed Jπ values are based on experimental observation and on model-dependent arguments. The level scheme and published electromagnetic transition probabilities are discussed within the context of state-of-art shell-model calculations using the SDPF-U effective interaction. In contrast with the excellent agreement observed in earlier published work, here there are significant discrepancies between experiment and the results of shell-model calculations. © 2011 American Physical Society., Supported in part by the EPSRC (UK) and by the European Union under Contract No. RII3-CT- 2004-506065. A.J. acknowledges ﬁnancial support from the m Spanish Ministerio de Ciencia e Innovacion under Contracts No. FPA2007-66069 and No. FPA2009-13377-C02-02. Zs.D. acknowledges the ﬁnancial support from OTKA Project No. K68801.
Published: 2011
Full Text: View/download PDF

85. Search for the giant pairing vibration through (p,t) reactions around 50 and 60 MeV

Author: S. V. Förtsch, F. D. Smit, H. Fujita, P. Papka, F. Azaiez, J. A. Swartz, J. Mabiala, Elias Khan, I. Stefan, S. Franchoo, R. Neveling, J. P. Mira, E. Z. Buthelezi, J. A. Scarpaci, A. Ramus, B. Mouginot, and I. T. Usman
Subjects: Baryon, Physics, Nuclear reaction, Nuclear and High Energy Physics, Particle physics, Proton, Pairing, Hadron, Elementary particle, Fermion, Atomic physics, Nucleon
Abstract: The existence of the giant pairing vibration (GPV) in $^{120}\mathrm{Sn}$ and $^{208}\mathrm{Pb}$ was investigated using the ($p$,$t$) reaction at incident proton energies of 50 MeV and 60 MeV for the scattering angles 0${}^{\ifmmode^\circ\else\textdegree\fi{}}$ and 7${}^{\ifmmode^\circ\else\textdegree\fi{}}$. No clear signature for the GPV was found, providing an upper limit for the cross section of ${\ensuremath{\sigma}}_{\mathrm{max}}$ = 0.2 mb. Theoretical interpretations for the low cross section of the GPV are discussed.
Published: 2011
Full Text: View/download PDF

86. Spectroscopy of 39,41Si and the border of the N = 28 island of inversion

Author: S. M. Lukyanov, Ch. Bourgeois, O. Sorlin, X. Liang, I. Stefan, Z. Elekes, J. Mrazek, Zs. Dombrádi, A. Drouard, M. G. St-Laurent, M. Lazar, J. C. Dalouzy, Zs. Podolyák, F. Pougheon, F. Nowacki, Alfredo Poves, N. A. Orr, D. Baiborodin, P. Roussel-Chomaz, S. Grévy, Z. Dlouhy, S. Iacob, István Kuti, L. Caceres, A. Buta, F. Negoita, J. C. Angélique, B. Bastin, S. Franchoo, D. Sohler, L. Gaudefroy, A. Bürger, R. Borcea, L. Nalpas, Yu.E. Penionzkhevitch, F. Azaiez, R. Chapman, N. L. Achouri, E. Liénard, B. Laurent, M. Stanoiu, Noyaux exotiques (NEX), 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)-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), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), 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 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 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), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), 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)
Subjects: Nuclear reaction, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Nuclear Theory, Fizikai tudományok, Shell closures, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Knockout reactions, 7. Clean energy, 01 natural sciences, Természettudományok, 0103 physical sciences, Neutron, Isotopes of silicon, Nuclear structure, 010306 general physics, Spectroscopy, Nuclear Experiment, Neutron-rich Si nuclei, Physics, 010308 nuclear & particles physics, Island of inversion, Excited state, Atomic physics, Ground state
Abstract: Expérience GANIL/SISSI/SPEG; International audience; The structure of the very neutron-rich nuclei 39Si and 41Si has been investigated via in-beam γ -ray spectroscopy and few-nucleon knockout from radioactive beams. The observation of low-lying states in 39Si is a clear evidence for a drastic lowering of the intruder neutron 3/2− state when going from Z = 20 to Z = 14. The energy of the only γ -ray transition (672(14) keV) observed in 41Si is significantly lower than that of the first excited state in 47Ca (2014 keV) suggesting a deformed ground state for 41Si. These results are consistent with large-scale shell-model calculations implying that strong proton- neutron correlations are the main reason for the lowering of the intruder configurations over the normal ones.
Published: 2011
Full Text: View/download PDF

87. Enhancement of the two neutron transfer channel in O-18 induced reactions at 84 MeV

Author: S. Tudisco, Manuela Cavallaro, G Santagati, F. Azaiez, Francesco Cappuzzello, J.A. Scarpaci, Daniele Carbone, A. Cunsolo, R Linares, R Chen, M. Bondì, S. Franchoo, M Niikura, A. Foti, and G. Taranto
Subjects: Nuclear reaction, Momentum, History, Materials science, Resolution (mass spectrometry), Spectrometer, Transfer (computing), Measuring instrument, Neutron, Atomic physics, Beam (structure), Computer Science Applications, Education
Abstract: A study of the yields for different reaction channels has been performed at the Catania INFN-LNS laboratory using a 18O beam on 13C and 12C targets. The ejectiles have been momentum analyzed by the MAGNEX magnetic spectrometer. The achieved mass resolution (about 1/160) has allowed to identify the reaction products corresponding to different reaction channels. The measured yields show an enhancement of two neutrons transfer channel compared to one. This result demonstrates that the (18O, 16O) reaction proceeds mainly by the direct transfer of the neutron pair, with small contributions from second order processes.
Published: 2011

88. Preliminary Study of Two-Neutron States via the ([sup 18]O,[sup 16]O) Reaction at 84 MeV

Author: M. Cavallaro, F. Cappuzzello, D. Carbone, A. Cunsolo, A. Foti, S. Tudisco, M. Bondì, G. Santagati, G. Taranto, R. Chen, R. Linares, F. Azaiez, S. Franchoo, M. Niikura, J. A. Scarpaci, Paraskevi Demetriou, Rauno Julin, and Sotirios Harissopulos
Subjects: Nuclear physics, Full width at half maximum, Spectrometer, Isotope, Chemistry, Nuclear Theory, Nuclear structure, Neutron, Atomic physics, Nuclear Experiment, Excitation, Spectral line, Oxygen-16
Abstract: A study of light neutron‐rich nuclei has been performed at the INFN‐LNS laboratory in Catania (Italy) by the (18O, 16O) reaction at 84 MeV incident energy on 9Be, 11B and 13C targets. The 16O ejectiles have been momentum analyzed and detected at forward angles by the MAGNEX magnetic spectrometer. The energy spectra of 15C show several known low lying states up to about 7 MeV excitation energy and unknown resonant structures at higher excitation energy. The strong excitation of these latter together with the measured width of about 2 MeV FWHM could indicate the presence of collective modes of excitation connected to the transfer of a correlated neutron pair. Also considerations regarding the reaction mechanism and the nuclei involved in the transfer seem to confirm such a conclusion. Similar features characterize the energy spectra of the 11Be and 13B nuclei. The achieved mass resolution (about 1/160) guarantying the identification of the reaction products corresponding to different reaction channels has a...
Published: 2011
Full Text: View/download PDF

89. New oblate band inHg196with quenchedM1 strength

Author: J. R. B. Oliveira, W. Korten, M. A. Stoyer, M. J. Brinkman, J Deboer, I. Y. Lee, P. Fallon, M. A. Deleplanque, A. Kuhnert, J. A. Becker, A. O. Macchiavelli, T. F. Wang, D. T. Vo, E. Rubel, J. E. Draper, C. Duyar, F. Azaiez, F. S. Stephens, Bo Cederwall, W. H. Kelly, R. M. Diamond, E. A. Henry, and J. R. Hughes
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Formalism (philosophy of mathematics), Angular momentum, Condensed matter physics, Mean field theory, Branching fraction, Computer Science::Information Retrieval, Oblate spheroid, Atomic physics, Beam energy, Excitation
Abstract: High-spin states in the nucleus [sup 196]Hg were populated in the reaction [sup 192]Os([sup 9]Be,5[ital n]) at a beam energy of 65 MeV. A regular rotational-like [Delta][ital I]=1 band has been observed up to an excitation energy of [ital E][sup *][approx]8.7 MeV and spin [ital I][approx]30[h bar]. This is the second observation of a band of this character in a mercury isotope. The experimental results are compared with mean field calculations and semiclassical estimates based on the Doenau-Frauendorf formalism. The mercury bands show significantly lower [ital B]([ital M]1)/[ital B]([ital E]2) branching ratios as compared with similar bands in light lead nuclei. This difference may be more readily explained by a difference in single-particle structure rather than by large differences in deformation between the lead and mercury configurations.
Published: 1993
Full Text: View/download PDF

90. Relative population of oblate and prolate structures in189Au

Author: F. Ibrahim, F. Le Blanc, N. Perrin, Daniel Hojman, A. Korichi, H. Sergolle, C. Bourgeois, D. G. Popescu, Josette Duprat, F. Azaiez, Institut de Physique Nucléaire d'Orsay (IPNO), 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, Nuclear and High Energy Physics, education.field_of_study, Spin states, 010308 nuclear & particles physics, Population, Prolate spheroid, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 0103 physical sciences, Oblate spheroid, Nuclear fusion, Atomic physics, 010306 general physics, education, Beam energy, Beam (structure)
Abstract: High spin states of189Au were populated via the174Yb (19F, 4n reaction at 86, 90, 95 and 100 MeV beam energies. The study of the relative population of oblate and prolate structures shows a striking disappearance of the prolate band relative to the oblate ones as the beam energy goes from 86 to 100 MeV.
Published: 1993
Full Text: View/download PDF

91. Oblate L=1 bands in 194,196–201Pb and 193Hg

Author: A. Kuhnert, D. T. Vo, M. J. Brinkman, E. A. Henry, N. Roy, J. R. B. Oliveira, J. E. Draper, Jolie Cizewski, M. A. Deleplanque, R. M. Diamond, F. Azaiez, C. Duyar, W. H. Kelly, W. Korten, M. A. Stoyer, E. Rubel, J. A. Becker, F. S. Stephens, A. O. Macchiavelli, and T. F. Wang
Subjects: Physics, Nuclear and High Energy Physics, Proton, Isotope, Oblate spheroid, Shell (structure), Neutron, Atomic physics, Moment of inertia, Instrumentation, Spin-½
Abstract: Reports of recent experiments have included observations of regular and irregular bands in neutron deficient Pb isotopes with A =194, 196–201. The bands are populated strongly in (HI, xn ) reactions. The shared characteristics of the bands include: 1) bandhead energies of a few MeV; 2) high bandhead spin; 3) large alignments; 4) small dynamic moments of inertia, and 5) strong L =1 transitions and weaker L =2 crossover transitions, with B( M 1) B( E 2) ≈ 20 μ 2 e 2 b 2 . Lifetimes of band members in the 198 Pb regular band are B (M1) ≈ 1 W.u. and B (E2) ≈ 12 W.u. (with large errors). These observations are consistent with an interpretation of the regular structures as collective oblate bands with both proton and neutron excitations involved; the closed proton shell at Z =82 is broken, and coupled to v( i 13 2 ) −n excitations. The irregular structures may correspond to triaxial shapes, with similar orbits involved. A similar structure has been also found in 193 Hg.
Published: 1993
Full Text: View/download PDF

92. Study of the superdeformed band in 194Pb and 192Hg with EUROGAM

Author: J. Simpson, N. Perrin, M. G. Porquet, Malcolm J. Joyce, F. Azaiez, G. Bastin, B. J. P. Gall, A. Astier, S.J. Gale, M. Meyer, C. Schück, N. Poffé, J.F. Sharpey-Schafer, F. Hannachi, P.M. Jones, Y. Le Coz, R. G. Henry, P. J. Dagnall, S. A. Forbes, N. Redon, M. P. Carpenter, P. Willsau, I. Deloncle, R. M. Clark, T. Lauritsen, M. A. Bentley, M. M. Aleonard, A. Korichi, C. Bourgeois, E. S. Paul, C. W. Beausang, G deFrance, H. Sergolle, D. Curien, AG Smith, R. Wadsworth, Josette Duprat, and Padraic G. Fallon
Subjects: Physics, Nuclear and High Energy Physics, Deformation (meteorology), Atomic physics
Abstract: A subset of the Eurogam array has been used to investigate the decay out of the superdeformed (SD) band in 194Pb. Two new band members and a new decay pattern into the low lying states at normal deformation (ND) have been established for this band. In the level scheme at normal deformation, the linking transitions between the previously known floating ΔI = 1 sequence and the lower states have been established for the first time. In this talk we will also report on the preliminary results of the search for the linking transitions between the SD and ND states in 192Hg with the fully operational EUROGAM array.
Published: 1993
Full Text: View/download PDF

93. Intruder negative-parity states of neutron-richSi33

Author: K. M. Spohr, A. Gadea, F. Nowacki, Z. M. Wang, E. Caurier, A. Hodsdon, M. Burns, X. Liang, M. D. Salsac, F. Ibrahim, A. Papenberg, J. Ollier, V. Kumar, D. Verney, F. Azaiez, M. Bouhelal, Suzana Szilner, Zsolt Dombrádi, A. Latina, G. Pollarolo, Fernando Scarlassara, L. Corradi, A. Jungclaus, Fabian Haas, D. R. Napoli, M. Stanoiu, M. Trotta, B. R. Behera, J. F. Smith, David O'Donnell, D. Curien, E. Fioretto, K. Keyes, N. Marginean, G. Montagnoli, A. M. Stefanini, Alick Deacon, Robert Chapman, and E. Farnea
Subjects: Physics, Nuclear and High Energy Physics, Light nucleus, Particle properties, 010308 nuclear & particles physics, 01 natural sciences, Nuclear physics, 0103 physical sciences, Economic history, media_common.cataloged_instance, European union, 010306 general physics, Parity (mathematics), Gamma detection, media_common
Abstract: This work was supported in part by the EPSRC (UK) and by the European Union under Contract No. RII3-CT-2004-506065. Five of us (D.O., M.B., A.H., K.K., and A.P.)acknowledge financial support from the EPSRC. Z.M.W acknowledges support from ORSAS and from the University of the West of Scotland. A.J. acknowledges financial supportfrom the Spanish Ministerio de Ciencia e Innovacion under Contract Nos. FPA2007-66069 and FPA2009-13377-C02-02. Zs.D. acknowledges the financial support from OTKA Project No. K68801.
Published: 2010
Full Text: View/download PDF

94. γ-ray spectroscopy of neutron-richS40

Author: D. Curien, E. Fioretto, M. Burns, K. Keyes, F. Haas, Suzana Szilner, J. Ollier, M. Stanoiu, G. Pollarolo, F. Nowacki, F. Scarlassara, N. Marginean, Zs. Dombrádi, M. D. Salsac, E. Caurier, A. Papenberg, F. Azaiez, D. R. Napoli, B. R. Behera, M. Trotta, J. F. Smith, David O'Donnell, L. Corradi, V. Kumar, A. Hodsdon, F. Ibrahim, Alick Deacon, G. Montagnoli, A. M. Stefanini, K. M. Spohr, Robert Chapman, A. Jungclaus, D. Verney, A. Gadea, E. Farnea, A. Latina, S. Lunardi, Z. M. Wang, and X. Liang
Subjects: Physics, Nuclear and High Energy Physics, Valence (chemistry), 010308 nuclear & particles physics, Yrast, Nuclear Theory, Hadron, 01 natural sciences, 7. Clean energy, Omega, Charged particle, 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Spectroscopy, Nucleon
Abstract: Yrast states up to (6{sup +}) in the neutron-rich {sup 40}S nucleus have been studied using binary grazing reactions produced by the interaction of a 215 MeV beam of {sup 36}S ions with a thin {sup 208}Pb target. The novel experimental setup that combines the large acceptance magnetic spectrometer, PRISMA, and the high-efficiency gamma-ray detection array, CLARA, was used. A new gamma-ray transition at an energy of 1572 keV was observed and tentatively assigned to the (6{sup +})->(4{sup +}) transition. A comparison of experimental observations and the results of large-scale 0(Planck constant/2pi)omega sd-pf shell-model calculations indicates that one- and two-proton excitations from the 2s{sub 1/2} to the 1d{sub 3/2} orbitals play an important role in reproducing the {sup 40}S yrast level structure and the published B(E2;0{sub g.s.}{sup +}->2{sub 1}{sup +}) value. The structure of the yrast states of the even-A isotopes of sulfur is interpreted in terms of the configurations of valence protons and neutrons within the context of large-scale 0(Planck constant/2pi)omega sd-pf shell-model calculations.
Published: 2010
Full Text: View/download PDF

95. γ-ray spectroscopy of1738Clusing grazing reactions

Author: A. Hodsdon, E. Caurier, David O'Donnell, J. Ollier, Suzana Szilner, M. Stanoiu, D. Verney, J. F. Smith, F. Nowacki, Fernando Scarlassara, Z. M. Wang, F. Ibrahim, B. R. Behera, A. Papenberg, Robert Chapman, X. Liang, M.-D. Salsac, A. M. Stefanini, F. Azaiez, D. R. Napoli, E. Farnea, Alick Deacon, Zsolt Dombrádi, L. Corradi, A. Latina, S. Beghini, F. Haas, G. Pollarolo, K. M. Spohr, G. Montagnoli, D. Curien, E. Fioretto, K. Keyes, M. Trotta, N. Marginean, A. Jungclaus, A. Gadea, M. Burns, and J. J. Valiente-Dobón
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Isotopes of chlorine, Context (language use), 01 natural sciences, Charged particle, Excited state, 0103 physical sciences, Gamma spectroscopy, Atomic physics, Nuclear Experiment, 010306 general physics, Spectroscopy, Spin (physics), Energy (signal processing)
Abstract: Excited states of $^{38}_{17}$Cl$_{21}$ were populated in grazing reactions during the interaction of a beam of $^{36}_{16}$S$_{20}$ ions of energy 215 MeV with a $^{208}_{82}$Pb$_{126}$ target. The combination of the PRISMA magnetic spectrometer and the CLARA $\gamma$-ray detector array was used to identify the reaction fragments and to detect their decay via $\gamma$-ray emission. A level scheme for $^{38}$Cl is presented with tentative spin and parity assignments. The level scheme is discussed within the context of the systematics of neighboring nuclei and is compared with the results of state-of-the-art shell model calculations.
Published: 2010
Full Text: View/download PDF

96. Study of collisions of the radioactive $^{24}$Ne beam at 7.9 MeV/u on $^{208} $Pb

Author: G. Benzoni, F. Azaiez, G. I. Stefan, S. Franchoo, S. Battacharyya, R. Borcea, A. Bracco, L. Corradi, D. Curien, G. De France, Zs. Dombradi, E. Fioretto, S. Grevy, F. Ibrahim, S. Leoni, D. Montanari, G. Mukherjee, G. Pollarolo, N. Redon, P. H. Regan, C. Schmitt, G. Sletten, D. Sohler, M. Stanoiu, S. Szilner, D. Verney, 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), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), SPIRAL, 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), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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 Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Radioactive ion beams, Nuclear and High Energy Physics, Ion beam, 010308 nuclear & particles physics, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Collision, 01 natural sciences, Nuclear physics, Angular distribution, 0103 physical sciences, Physics::Accelerator Physics, Nuclear fusion, grazing collsions, 24Ne beam, VAMOS, GRAZING model, Atomic physics, Nuclear Experiment, 010306 general physics, Spiral, Beam (structure)
Abstract: Expérience GANIL, VAMOS-EXOGAM; Cross-sections of the main reaction channels for the collision 24Ne + 208Pb at 7.9MeV/u were studied using the radioactive ion beam delivered by the SPIRAL facility and the VAMOS-EXOGAM experimental set-up. Angular distributions for the elastic and inelastic channels were extracted, together with distributions for the +1n and −1p channels. A comprehensive description of the present data is made within the GRAZING model approach.
Published: 2010
Full Text: View/download PDF

97. Level spin for superdeformed nuclei nearA=194

Author: S. W. Yates, M. A. Deleplanque, Jolie Cizewski, F. S. Stephens, E. A. Henry, W. Korten, A. Kuhnert, M. J. Brinkman, R. M. Diamond, F. Azaiez, J. A. Becker, W. H. Kelly, J. E. Draper, A. O. Macchiavelli, and T. F. Wang
Subjects: Rotational model, Physics, Nuclear and High Energy Physics, Particle properties, Excited state, Mercury Isotopes, Atomic physics, Spin (physics), Omega, Energy (signal processing), Calculation methods
Abstract: Transition energies of 25 superdeformed (SD) bands in 13 nuclei of the A=194 region were fitted by the power-series expansion of I in odd powers of ${\mathit{E}}_{\ensuremath{\gamma}}$/2, \ensuremath{\Elzxh}(I+1/2)=2\ensuremath{\alpha}\ensuremath{\omega}+4/3\ensuremath{\beta}${\mathrm{\ensuremath{\omega}}}^{3}$, where ${\mathit{E}}_{\ensuremath{\gamma}}$/2=\ensuremath{\Elzxh}\ensuremath{\omega}, and by the expression for transition energy, ${\mathit{E}}_{\ensuremath{\gamma}}$=E(I+2)-E(I), where E(I)=AI(I+1) +B[I(I+1)${]}^{2}$+C[I(I+1)${]}^{3}$. Results are generally similar, and level spins for these SD bands are given based on expectations of rotational model behavior.
Published: 1992
Full Text: View/download PDF

98. Oblate collectivity inPb197

Author: E. A. Henry, J. E. Draper, M. A. Deleplanque, M. J. Brinkman, Jolie Cizewski, A. O. Macchiavelli, T. F. Wang, A. Kuhnert, R. M. Diamond, F. Azaiez, W. H. Kelly, W. Korten, M. A. Stoyer, S. W. Yates, F. S. Stephens, and J. A. Becker
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Collective behavior, Proton, Nuclear Theory, Oblate spheroid, Quasiparticle, Neutron, Atomic physics, Nuclear Experiment, Excitation
Abstract: Evidence for collective behavior in the high-spin region of lead nuclei is provided by the observation of two collective structures in $^{197}\mathrm{Pb}$. One of these bands is interpreted as an oblate collective structure built on oblate proton and possibly neutron states. A second more irregular band is suggested to be most likely a triaxial rotational band. Neutron and proton configurations for these bands are suggested from the results of quasiparticle Routhians and total Routhians surface calculations. A partial level scheme up to I\ensuremath{\approxeq}69/2 and ${\mathit{E}}_{\mathit{x}}$\ensuremath{\approxeq}8 MeV is presented.
Published: 1992
Full Text: View/download PDF

99. Experimental study ofGa84 βdecay: Evidence for a rapid onset of collectivity in the vicinity ofNi78

Author: D. Guillemaud-Mueller, P. V. Cuong, M. Lebois, F. Le Blanc, N. de Séréville, C. M. Petrache, K. Flanagan, B. Roussière, B. Mouginot, E. Cottereau, I. Stefan, Fairouz Hammache, D. Verney, B. Tastet, S. Franchoo, M. Ferraton, S. Essabaa, M. Cheikh Mhamed, F. Ibrahim, C. Lau, L. Sagui, J. F. Le Du, J. Libert, and F. Azaiez
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Rapid onset, SHELL model, Photofission, GCM transcription factors, Atomic physics, 010306 general physics, 01 natural sciences, Energy (signal processing)
Abstract: $\ensuremath{\gamma}$-rays following the $\ensuremath{\beta}$ and $\ensuremath{\beta}\text{\ensuremath{-}}n$ decays of the very neutron rich ${}_{31}^{84}{\mathrm{Ga}}_{53}$ produced by the photofission of $^{238}\mathrm{U}$ have been studied at the newly built ISOL facility of IPN Orsay: ALTO. Two activities were observed and assigned to two $\ensuremath{\beta}$-decaying states: $^{84}\mathrm{Ga}$${}^{g}$, ${I}^{\ensuremath{\pi}}=({0}^{\ensuremath{-}})$ and $^{84}\mathrm{Ga}$${}^{m}$, ${I}^{\ensuremath{\pi}}=({3}^{\ensuremath{-}},{4}^{\ensuremath{-}})$. Excitation energies of the ${2}_{1}^{+}$ and ${4}_{1}^{+}$ states of ${}_{32}^{84}{\mathrm{Ge}}_{52}$ were measured at $E({2}_{1}^{+})=624.3$ keV and $E({4}_{1}^{+})=1670.1$ keV. Comparison with HFB $+$ GCM calculations allows to establish the collective character of this nucleus. The excitation energy of the $1/{2}_{1}^{+}$ state in ${}_{32}^{83}{\mathrm{Ga}}_{51}$ known to carry a large part of the neutron $3{s}_{1/2}$ strength was measured at $247.8$ keV. Altogether these data allow to confirm the new single particle state ordering which appears immediately after the double $Z=28$ and $N=50$ shell closure and to designate $^{78}\mathrm{Ni}$ as a fragile and easily polarized doubly-magic core.
Published: 2009
Full Text: View/download PDF

100. Binary reaction decays fromMg24+C12

Author: M. Rousseau, G. Royer, S. M. Lenzi, A. Sanchez I Zafra, D. Curien, D. Lebhertz, S. Courtin, S. Thummerer, W. N. Catford, O. Dorvaux, P. Bednarczyk, P. Papka, Tz. Kokalova, Abdel-Mjid Nourreddine, C. Beck, D. G. Jenkins, F. Azaiez, G. de Angelis, B. Gebauer, A. Gadea, D. R. Napoli, Suzana Szilner, W. von Oertzen, and C. Wheldon
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, education.field_of_study, 010308 nuclear & particles physics, Branching fraction, Population, Carbon-12, Gamma ray, Resonance, 01 natural sciences, Charged particle, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, education, Oxygen-16
Abstract: Charged-particle and $\ensuremath{\gamma}$ decays in $^{24}\mathrm{Mg}{}^{*}$ are investigated for excitation energies where quasimolecular resonances appear in $^{12}\mathrm{C}+^{12}\mathrm{C}$ collisions. Various theoretical predictions for the occurrence of superdeformed and hyperdeformed bands associated with resonance structures with low spin are discussed within the measured $^{24}\mathrm{Mg}{}^{*}$ excitation energy region. The inverse kinematics reaction $^{24}\mathrm{Mg}+^{12}\mathrm{C}$ is studied at ${E}_{\mathrm{lab}}(^{24}\mathrm{Mg})=130$ MeV, an energy that enables the population of $^{24}\mathrm{Mg}$ states decaying into $^{12}\mathrm{C}+^{12}\mathrm{C}$ resonant breakup states. Exclusive data were collected with the Binary Reaction Spectrometer in coincidence with Euroball IV installed at the Vivitron tandem facility at Strasbourg. Specific structures with large deformation were selectively populated in binary reactions, and their associated $\ensuremath{\gamma}$ decays studied. Coincident events associated with inelastic and $\ensuremath{\alpha}$-transfer channels have been selected by choosing the excitation energy or the entry point via the two-body $Q$ values. The analysis of the binary reaction channels is presented with a particular emphasis on $^{24}\mathrm{Mg}\text{\ensuremath{-}}\ensuremath{\gamma}$, $^{20}\mathrm{Ne}\text{\ensuremath{-}}\ensuremath{\gamma}$, and $^{16}\mathrm{O}$-$\ensuremath{\gamma}$ coincidences. New information (spin and branching ratios) is deduced on high-energy states in $^{24}\mathrm{Mg}$ and $^{16}\mathrm{O}$, respectively.
Published: 2009
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

302 results on '"F. Azaiez"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources