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40 results on '"M. Ciemala"'

1. Reinterpretation of excited states in Po212 : Shell-model multiplets rather than α -cluster states

Author

B. Million, E. Dupont, Bertrand Jacquot, R. Menegazzo, M. Ciemala, M. Zielińska, R. M. Perez-Vidal, L. J. Harkness-Brennan, D. Mengoni, Vicente González, W. Korten, D. Kocheva, D. Ralet, D. R. Napoli, P. Reiter, J. Eberth, Zs. Podolyák, A. Astier, B. Birkenbach, C. Michelagnoli, G. Tocabens, A. Perea, J. Dudouet, Ch. Lorenz, A. Bracco, A. Maj, M. Jurado, Begoña Quintana, A. Fernández, H. C. Boston, J. Ropert, J. Ljungvall, L. Ménager, Dirk Rudolph, G. Benzoni, H. Naïdja, E. Nácher, A. Korichi, A. Jungclaus, K. Wimmer, J. J. Valiente-Dobón, C. Houarner, A. Gadea, Johan Nyberg, J. Collado, A. Pullia, A. Gargano, Hans-Jurgen E. Hess, A. J. Boston, Emyr Clement, J. Goupil, A. Såmark-Roth, Enrique Sanchis, Diego Barrientos, S. Leoni, G. Frémont, N. Lalović, F. Saillant, D. S. Judson, O. Stezowski, A. Lemasson, C. Spitaels, S. Ansari, G. S. Simpson, D. M. Cullen, A. Illana, N. Redon, Luis Sarmiento, C. M. Petrache, G. Rainovski, Ch. Theisen, H. J. Li, C. Domingo-Pardo, and Pavel Golubev

Subjects
Reinterpretation, Physics, 010308 nuclear & particles physics, Excited state, 0103 physical sciences, SHELL model, Cluster (physics), Atomic physics, 010306 general physics, 01 natural sciences
Published
2021
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2. Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus Tc444387

Author

X. Liu, B. Cederwall, C. Qi, R. A. Wyss, Ö. Aktas, A. Ertoprak, W. Zhang, E. Clément, G. de France, D. Ralet, A. Gadea, A. Goasduff, G. Jaworski, I. Kuti, B. M. Nyakó, J. Nyberg, M. Palacz, R. Wadsworth, J. J. Valiente-Dobón, H. Al-Azri, A. Ataç Nyberg, T. Bäck, G. de Angelis, M. Doncel, J. Dudouet, A. Gottardo, M. Jurado, J. Ljungvall, D. Mengoni, D. R. Napoli, C. M. Petrache, D. Sohler, J. Timár, D. Barrientos, P. Bednarczyk, G. Benzoni, B. Birkenbach, A. J. Boston, H. C. Boston, I. Burrows, L. Charles, M. Ciemala, F. C. L. Crespi, D. M. Cullen, P. Désesquelles, C. Domingo-Pardo, J. Eberth, N. Erduran, S. Ertürk, V. González, J. Goupil, H. Hess, T. Huyuk, A. Jungclaus, W. Korten, A. Lemasson, S. Leoni, A. Maj, R. Menegazzo, B. Million, R. M. Perez-Vidal, Zs. Podolyàk, A. Pullia, F. Recchia, P. Reiter, F. Saillant, M. D. Salsac, E. Sanchis, J. Simpson, O. Stezowski, C. Theisen, and M. Zielińska

Subjects
Physics, Proton, Spectrometer, 010308 nuclear & particles physics, Isoscalar, Nuclear Theory, 01 natural sciences, Charged particle, Excited state, 0103 physical sciences, Level structure, Neutron, AGATA, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract

The low-lying excited states in the neutron-deficient $N = Z + 1$ nucleus $^{87}_{43}$Tc$_{44}$ have been studied via the fusion-evaporation reaction $^{54}$Fe $(^{36}Ar, 2n1p)$ $^{87}$Tc at the Grand Accelerateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt γ rays, neutrons, and charged particles emitted in the reaction. A level scheme of $^{87}$Tc from the $(9/2^+_{g.s})$ state to the $( 33 / 2^+_1$) state was established based on six mutually coincident γ -ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at $ℏω ≈ 0.50$ MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around $N=44$ is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the $N=Z$ line.

Published
2021
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3. Accessing tens-to-hundreds femtoseconds nuclear state lifetimes with low-energy binary heavy-ion reactions

Author

M. Zieblinski, J. Grebosz, K. Mazurek, Simone Coelli, S. Brambilla, H. J. Li, B. Million, M. Rejmund, Bertrand Jacquot, P. Bednarczyk, N. Cieplicka-Oryńczak, M. Ciemala, M. Bast, S. Ziliani, O. Dorvaux, S. Erturk, Eric Clément, Ł. W. Iskra, C. Fransen, S. M. Lenzi, B. Fornal, P. J. Napiorkowski, C. Müller-Gatermann, M. Zielińska, B. Wasilewska, I. Matea, A. Maj, M. Kmiecik, Y. H. Kim, M. Kicińska-Habior, C. Michelagnoli, I. Stefan, M. Beckers, F. C. L. Crespi, O. Wieland, M. Lewitowicz, R. Palit, D. R. Napoli, Ch. Schmitt, A. V. Karpov, M. Stanoiu, F. Camera, Emanuele Vardaci, M. Matejska-Minda, A. Bracco, G. Benzoni, S. Bottoni, S. Leoni, V. Nanal, C. Boiano, A. Lemasson, Mohsen Harakeh, Thomas Braunroth, A. Goldkuhle, 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 Laue-Langevin (ILL), ILL, 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, Ciemala, M., Ziliani, S., Crespi, F. C. L., Leoni, S., Fornal, B., Maj, A., Bednarczyk, P., Benzoni, G., Bracco, A., Boiano, C., Bottoni, S., Brambilla, S., Bast, M., Beckers, M., Braunroth, T., Camera, F., Cieplicka-Orynczak, N., Clement, E., Coelli, S., Dorvaux, O., Erturk, S., De France, G., Fransen, C., Goldkuhle, A., Grebosz, J., Harakeh, M. N., Iskra, L. W., Jacquot, B., Karpov, A., Kicinska-Habior, M., Kim, Y. -H., Kmiecik, M., Lemasson, A., Lenzi, S. M., Lewitowicz, M., Li, H., Matea, I., Mazurek, K., Michelagnoli, C., Matejska-Minda, M., Million, B., Muller-Gatermann, C., Nanal, V., Napiorkowski, P., Napoli, D. R., Palit, R., Rejmund, M., Schmitt, C., Stanoiu, M., Stefan, I., Vardaci, E., Wasilewska, B., Wieland, O., Zieblinski, M., Zielinska, M., H. Niewodniczanski Institute of Nuclear Physics, Polska Akademia Nauk = Polish Academy of Sciences (PAN), Dipartimento di Fisica (Milano), Università degli Studi di Milano [Milano] (UNIMI), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), Istituto Nazionale di Fisica Nucleare (INFN), Institut für Kernphysik der Universität zu Köln, Universität zu Köln, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Milano = University of Milan (UNIMI), Universität zu Köln = University of Cologne, 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 Nuclear Energy

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Monte Carlo method, Hadron, FOS: Physical sciences, Binary number, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Excited state, 0103 physical sciences, Nuclear fusion, AGATA, Nuclear Experiment (nucl-ex), Connection (algebraic framework), Atomic physics, Nuclear Experiment, 010306 general physics
Abstract

A novel Monte Carlo technique has been developed to determine lifetimes of excited states in the tens-to-hundreds femtoseconds range in products of low-energy heavy-ion binary reactions, with complex velocity distributions. The method is based on a detailed study of Doppler-broadened $$\gamma $$ γ -ray lineshapes. Its relevance is demonstrated in connection with the $$^{18}\text {O}(7.0\, \text {MeV/u})+\,^{181}\text {Ta}$$ 18 O ( 7.0 MeV/u ) + 181 Ta experiment, performed at GANIL with the AGATA+VAMOS+PARIS setup, to study neutron-rich O, C, N, ... nuclei. Excited states in $$^{17}\text {O}$$ 17 O and $$^{19}\text {O}$$ 19 O , with known lifetimes, are used to validate the method over the $$\sim 20{-}400\,\text {fs}$$ ∼ 20 - 400 fs lifetime-sensitivity range. Emphasis is given to the unprecedented position resolution provided by $$\gamma $$ γ -tracking arrays, which turns out to be essential for reaching the required accuracy in Doppler-shift correction. The technique is anticipated to be an important tool for lifetime investigations in exotic neutron-rich nuclei, produced with intense ISOL-type beams.

Published
2021
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4. Probing isospin mixing with the giant dipole resonance in the Zn-60 compound nucleus

Author

S. Pascu, J. Kaur, G. Gosta, M. Rocchini, A. Montaner, G. de Angelis, A. Nannini, R. Menegazzo, F. Galtarossa, S. Capra, D. Mengoni, G. Pasqualato, M. Ciemala, C. Porzio, F. Camera, S. M. Lenzi, A. Boso, D. Filipescu, V. Zamfir, J. Yang, A. Giaz, A. Gadea, S. Riboldi, A. Gottardo, S. Brambilla, Tuncay Bayram, B. Wasilewska, A. Maj, D. Brugnara, D. Bazzacco, F. C. L. Crespi, S. Ceruti, J. J. Valiente-Dobón, N. Blasi, M. Siciliano, T. Marchi, N. Marginean, P. R. John, M. Kmiecik, D. R. Napoli, R. Raabe, G. Jaworski, A. Bracco, O. Wieland, G. Benzoni, S. Leoni, A. Mentana, F. Recchia, I. Zanon, B. Million, A. Goasduff, Dmitry Testov, N. Marchini, S. Ziliani, M. Zieblinski, O. Poleshchuk, A. Gozzelino, T. Glodariu, and D. Ghita

Subjects
Physics, Science & Technology, 010308 nuclear & particles physics, SYMMETRY, WIDTH, Resonance, 01 natural sciences, 3. Good health, Dipole, medicine.anatomical_structure, Physics, Nuclear, Isospin, 0103 physical sciences, Physical Sciences, medicine, Atomic physics, 010306 general physics, Nucleus, Mixing (physics), BREAKING
Abstract

ispartof: PHYSICAL REVIEW C vol:103 issue:4 status: published

Published
2021

5. Probing nuclear forces beyond the nuclear drip line: the cases of $^{16}$F and $^{15}$F: A Tribute to Mahir Hussein

Author

L. Caceres, A.M. Sánchez Benítez, Igor T. Čeliković, A. Matta, D. Verney, F. Rotaru, Valdir Guimaraes, P. Adsley, O. Sorlin, J. Guillot, T. Roger, C. Portail, V. Girard-Alcindor, I. Matea, A. Georgiadou, C. Petrone, D. Pantelica, R. Borcea, D. Suzuki, O. Kamalou, V. Lapoux, Megumi Niikura, I. Stefan, J. Piot, F. Flavigny, G. D’Agata, F. de Oliveira Santos, M. Ciemala, V. Tatischeff, V. Chudoba, L. Lalanne, C. Stodel, J. C. Thomas, N. Goyal, M. Stanoiu, C. Fougeres, S. Grévy, F. Negoita, N. de Séréville, L. Perrot, G. Dumitru, M. Assie, A. Meyer, J. C. Angelique, Marlete Assunção, Nicolas Michel, F. Hammache, D. Beaumel, S. Franchoo, Predrag Ujić, Dieter Ackermann, Shoko Koyama, F. de Grancey, J. Kiener, E. Berthoumieux, P. Morfouace, J. Mrazek, K. Subotic, 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 des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-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)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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)-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
Elastic scattering, Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Asymmetry, Excited state, 0103 physical sciences, Nuclear force, Mirror nuclei, Atomic physics, 010306 general physics, Wave function, Nuclear Experiment, media_common
Abstract

The unbound proton-rich nuclei $$^{16}$$ F and $$^{15}$$ F are investigated experimentally and theoretically. Several experiments using the resonant elastic scattering method were performed at GANIL with radioactive beams to determine the properties of the low lying states of these nuclei. Strong asymmetry between $$^{16}$$ F– $$^{16}$$ N and $$^{15}$$ F– $$^{15}$$ C mirror nuclei is observed. The strength of the $$nucleon-nucleon$$ effective interaction involving the loosely bound proton in the $$s_{1/2}$$ orbit is significantly modified with respect to their mirror nuclei $$^{16}$$ N and $$^{15}$$ C. The reduction of the effective interaction is estimated by calculating the interaction energies with a schematic zero-range force. It is found that, after correcting for the effects due to changes in the radial distribution of the single-particle wave functions, the mirror symmetry of the $$n-p$$ interaction is preserved between $$^{16}$$ F and $$^{16}$$ N, while a difference of 63% is measured between the $$p-p$$ versus $$n-n$$ interactions in the second excited state of $$^{15}$$ F and $$^{15}$$ C nuclei. Several explanations are proposed.

Published
2021
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6. Using γ rays to disentangle fusion-fission and quasifission near the Coulomb barrier: A test of principle in the fusion-fission and quasielastic channels

Author

C. Petrone, C. Borcea, A. Maj, K. V. Novikov, G. N. Knyazheva, Emanuele Vardaci, V. V. Kirakosyan, A. Bracco, S. Brambilla, G. Sposito, D. Verney, I. M. Harca, D. Quero, K. Saveleva, John W. Wilson, A. Pulcini, S. Calinescu, I. V. Kolesov, M. Ciemala, O. Dorvaux, E. M. Kozulin, F. Camera, I. M. Itkis, O. Stezowski, M. Ashaduzzaman, B. de Canditiis, C. Schmitt, D. Pierroutsakou, A. Di Nitto, P. K. Rath, G. La Rana, C. Parascandolo, N. I. Kozulina, I. Matea, 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 Pluridisciplinaire Hubert Curien (IPHC), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], Physics, Nuclear reaction, Angular momentum, Photon, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Spectrometer, Mass distribution, 010308 nuclear & particles physics, Coulomb barrier, Observable, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Ion, Nuclear physics, 0103 physical sciences, Nuclear Reactions, Nuclear Experiment, 010306 general physics, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; The overlap in the mass symmetric region of the reaction products from fusion-fission and quasifission complicates the assignment of symmetric events to complete fusion on the basis of the mass distribution alone. Additional observables, besides mass distribution, should be used. The approach proposed here relies on the fact that fusion-fission and quasifission are characterized by different timescales. Within this framework, we performed a detailed study to find out how timescales can be probed via angular momentum transfer as measured via γ-ray multiplicities. The proof of principle was carried out by measuring the γ rays in coincidence with fusion-fission and quasielastic binary fragments in the reaction S32 + Au197 at beam energy near the Coulomb barrier. The experiment was performed at the Accélérateur Linéaire Tandem à Orsay (ALTO) facility at the Institut De Physique Nucléaire (IPN) in Orsay (France) using a detection setup consisting of ORGAM (ORsay GAMma) and PARIS (Photon Array Radioactive Ion Stable beams) γ-detectors arrays coupled with the CORSET (CORrelation SETup) time-of-flight spectrometer. Results of the sensitivity of this method to distinguish reaction channels with different dynamics are discussed.

Published
2020
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7. Energy response and identification efficiency of CsI(Tl) crystals irradiated with energetic protons

Author

M. Cinausero, P. Ottanelli, Maurizio Bini, Sandro Barlini, Giovanni Casini, Giuseppe Verde, G. Mantovani, D. Fabris, R. Bougault, Giacomo Poggi, M. Bruno, A. Maj, K. Mazurek, M. Henri, N. Cieplicka-Oryńczak, Tomasz Kozik, O. Lopez, M. Ciemala, F. Gramegna, T. Marchi, Andrea Stefanini, A. Chibhi, M. Matejska-Minda, N. Le Neindre, J.D. Frankland, A.J. Kordyasz, S. Upadhyahya, B. Borderie, Eric Bonnet, M. Zieblinski, Gabriele Pasquali, B. Sowicki, A. Buccola, Ivano Lombardo, A. Camaiani, M. Parlog, Diego Gruyer, E. Vient, C. Frosin, Magda Cicerchia, Alessandro Olmi, Simone Valdré, Silvia Piantelli, J. A. Dueñas, 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), Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - Faculté des Sciences et des Techniques, Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), 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), 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), 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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique)

Subjects
Nuclear and High Energy Physics, Proton, heavy ion collisions, Cyclotron, chemistry.chemical_element, particle identification method, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], CsI(Tl) detectors, 7. Clean energy, 01 natural sciences, Collimated light, law.invention, 99-00, Crystal, Particle identification method, law, 0103 physical sciences, Heavy ion collisions, Irradiation, 010306 general physics, Nuclear Experiment, Instrumentation, ComputingMilieux_MISCELLANEOUS, Light-energy response, detectors, light-energy response, Physics, [PHYS]Physics [physics], Range (particle radiation), 010308 nuclear & particles physics, 00-01, chemistry, Thallium, Physics::Accelerator Physics, Atomic physics, Beam (structure)
Abstract

International audience; The proton energy calibration and the corresponding identification efficiency of the Thallium activated Cesium Iodide (CsI(Tl)) crystals of the Fazia detection system have been studied in the range of 59–180 MeV by using the proton beam delivered by the cyclotron of the CCB (Cyclotron Center Bronowice) facility. The light output versus energy is linear in the lower portion of the investigated energy range while showing a deviation from linearity on the higher energy side. The effects of proton induced nuclear collisions have been identified and estimated via Pulse Shape Analysis in CsI(Tl) crystals. Experimental efficiency for proton identification in the examined energy range is deduced and compared with GEANT4 simulations. For a well collimated crystal, and at the highest considered energy, the efficiency value comes out to be about 70%.

Published
2020
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8. Physics opportunities with the Advanced Gamma Tracking Array: AGATA

Author

W. Korten, A. Bracco, A. Atac, G. Benzoni, S. Leoni, P. Reiter, A. Goasduff, Eric Clément, K. A. Gladnishki, F. Recchia, A. Jungclaus, Bo Cederwall, G. Duchêne, D. G. Jenkins, A. Nannini, P. Bednarczyk, M. Zielińska, Dirk Rudolph, Riccardo Raabe, B. Million, A. Tumino, P. J. Nolan, D. R. Napoli, B. Fernández-Domínguez, F. Didierjean, Johan Nyberg, Herbert Hess, A. Gadea, D. Tonev, M. Ciemala, G. Rainovski, D. T. Doherty, Joakim Cederkäll, A. Obertelli, J. Gerl, J. J. Valiente-Dobón, B. Fornal, Begoña Quintana, J. Ljungvall, Ch. Theisen, Janne Pakarinen, G. de Angelis, P. R. John, M. Kmiecik, O. Wieland, Zs. Dombrádi, J. Simpson, A. J. Boston, M. Górska, Zs. Podolyák, D. Curien, J. Dudek, Norbert Pietralla, F. C. L. Crespi, A. Maj, K. Wimmer, Paul Greenlees, D. Beaumel, M. Labiche, A. Lopez-Martens, A. Korichi, M. A. Bentley, D. Mengoni, Liam Gaffney, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), 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 de Sciences Nucléaires et de Sciences de la Matière (CSNSM), AGATA, 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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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), Ministerio de Ciencia, Innovación y Universidades (España), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Radioactive ion beams, Nuclear and High Energy Physics, NEUTRON-RICH, Position resolution, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Accelerator Physics and Instrumentation, Tracking (particle physics), 7. Clean energy, 01 natural sciences, Physics, Particles & Fields, Subatomär fysik, Optics, Subatomic Physics, 0103 physical sciences, Gamma spectroscopy, SPECTROMETER, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], SUPERHEAVY ELEMENTS, 010306 general physics, ROTATIONAL BAND, DETECTOR, Physics, Science & Technology, Spectrometer, 010308 nuclear & particles physics, business.industry, European research, Detector, Acceleratorfysik och instrumentering, FISSION-BARRIERS, PERFORMANCE, Physics, Nuclear, SPIN, Physical Sciences, SHELL-MODEL, AGATA, business, DECAY
Abstract

AGATA Collaboration, New physics opportunities are opening up by the Advanced Gamma Tracking Array, AGATA, as it evolves to the full 4π instrument. AGATA is a high-resolution γ-ray spectrometer, solely built from highly segmented high-purity Ge detectors, capable of measuring γ rays from a few tens of keV to beyond 10 MeV, with unprecedented efficiency, excellent position resolution for individual γ-ray interactions, and very high count-rate capability. As a travelling detector AGATA will be employed at all major current and near-future European research facilities delivering stable and radioactive ion beams., The AGATA project has been supported by the European Structural Funds FSE FEDER, the Academy of Finland FIRI program, Finland, the Direction de Recherches Fondamentales of CEA, France, the Institut National de Physique Nucléaire et de Physique des Particules (IN2P3) of CNRS, France, the Bundesministerium für Bildung und Forschung (BMBF), Germany, the Institute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), Hungary, the IstitutoNazionale di Fisica Nucleare (INFN), Italy, theNational Science Center (NCN), Poland, the Knut and AliceWallenberg foundation (Sweden), the Swedish Research Council, the Conselleria d’Educació, Investigació, Cultura i Esport, Generalitat Valenciana and Ministerio de Ciencia, Innovación y Universidades, Spain, the Türkiye Bilimsel ve Teknolojik Ara¸stirma Kurumu (TÜBITAK), Turkey, and the United Kingdom Research and Innovation – Science and Technology Facilities Council (UKRI-STFC).

Published
2020
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9. Low-lying electric dipole gamma-continuum for the unstable Fe-62,64 nuclei : Strength evolution with neutron number

Author

Eric Clément, B. Birkenbach, A. I. Morales, D. Bazzacco, H. J. Wollersheim, J. J. Valiente-Dobón, D. M. Cullen, L. J. Harkness-Brennan, M. Kmiecik, Alberto Pullia, C. Domingo-Pardo, Luis Sarmiento, C. Nociforo, N. Goel, B. Bruyneel, G. Rainovski, M.D. Salsac, S. Pietri, Begoña Quintana, J. Simpson, Pavel Golubev, T. Habermann, Johan Nyberg, R. Menegazzo, S. Leoni, M. Reese, V. Yu. Ponomarev, A. Maj, T. Arici, A. Gottardo, N. Kurz, M. Górska, S. Brambilla, I. Kojouharov, E. Merchan, M. L. Cortés, Stefano Riboldi, Enrique Sanchis, N. Lalović, Vicente González, R. Avigo, Norbert Pietralla, P. Reiter, F. Camera, M. Labiche, Zs. Podolyák, J. Gerl, D. Ralet, F. Ameil, Andreas Görgen, A. Gadea, A. Bracco, A. Jungclaus, G. Benzoni, O. Stezowski, Dirk Rudolph, D. Curien, J. Eberth, H. C. Boston, S. Bottoni, W. Korten, F. C. L. Crespi, N. Blasi, H. Schaffner, D. Mengoni, M. Lettmann, G. Duchêne, Diego Barrientos, P. H. Regan, F. Didierjean, M. Ciemala, P. Bednarczyk, G. Guastalla, B. Million, E. Gregor, Oliver Wieland, F. Recchia, D. R. Napoli, A. Atac, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), Istituto Nazionale di Fisica Nucleare, Science and Technology Facilities Council (UK), Swedish Research Council, Federal Ministry of Education and Research (Germany), European Commission, Generalitat Valenciana, Ministerio de Economía y Competitividad (España), 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
Nuclear and High Energy Physics, Phonon, Astrophysics::High Energy Astrophysical Phenomena, Binding energy, Nuclear Theory, Coulomb excitation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, 64Fe, Dipole excitation around neutron threshold, 62Fe, Subatomär fysik, 0103 physical sciences, Subatomic Physics, ddc:530, Neutron, Nuclear Physics - Experiment, Nuclear structure, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, 62 Fe, Fe, 64, 64 Fe, lcsh:QC1-999, Dipole, Fe-64, Neutron number, Fe-62, AGATA, Atomic physics, lcsh:Physics
Abstract

6 pags., 4 figs., The γ-ray emission from the nuclei Fe following Coulomb excitation at bombarding energy of 400-440 AMeV was measured with special focus on E1 transitions in the energy region 4-8 MeV. The unstable neutron-rich nuclei Fe were produced at the FAIR-GSI laboratories and selected with the FRS spectrometer. The γ decay was detected with AGATA. From the measured γ-ray spectra the summed E1 strength is extracted and compared to microscopic quasi-particle phonon model calculations. The trend of the E1 strength with increasing neutron number is found to be fairly well reproduced with calculations that assume a rather complex structure of the 1 states (three-phonon states) inducing a strong fragmentation of the E1 nuclear response below the neutron binding energy., This work was partially supported by INFN (Italy) and STFC (UK), the Swedish Research Council (Vetenskapsrådet, VR 2010-147, 2011-5253, and 2016-3969), BMBF NuSTAR-AGATA 05P18RDFN9 and BMBF NuSTAR 05P18RDFN1. The project was co-funded by the European Commission under the 7th Framework Program for RTD (2007-2013) under the Capacities Program (Contract Number 262010, ENSAR). This work was par-tially supported by the Ministry of Science, and Generalitat Valenciana, Spain, under the Grants SEV-2014-0398, FPA2017-84756-C4, PROMETEO/2019/005 and by the EU FEDER funds.

Published
2020
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10. Features of the Fission Fragments Formed in the Heavy Ion induced $^{32}\hbox {S}$+$^{197}\hbox {Au}$ reaction near the interaction barrier

Author

G. N. Knyazheva, Emanuele Vardaci, O. Dorvaux, P.K. Rath, D. Verney, E. M. Kozulin, B. Decanditiis, S. Brambilla, E. Saveleva, D. Quero, G. La Rana, J. N. Wilson, S. Calinescu, N. I. Kozulina, C. Schmitt, I. M. Itkis, F. Camera, A. Bracco, K. V. Novikov, W. H. Trzaska, O. Stezowski, I. Matea, A. Pulcini, I. M. Harca, A. Di Nitto, M. Ciemala, V. V. Kirakosyan, C. Petrone, M. Ashaduzzaman, I. V. Kolesov, C. Borcea, A. Maj, 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 Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), SPS, PARIS, 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 National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Kozulin, E. M., Harca, I. M., Vardaci, E., Matea, I., Maj, A., Itkis, I., Knyazheva, G., Novikov, K., Dorvaux, O., Ciemala, M., Brambilla, S., Kozulina, N., Kolesov, I. V., Saveleva, E., Kirakosyan, V. V., Schmitt, C., Borcea, C., Calinescu, S., Petrone, C., Ashaduzzaman, M., Decanditiis, B., Pulcini, A., Quero, D., Rath, P., di Nitto, A., La Rana, G., Bracco, A., Camera, F., Stezowski, O., Wilson, J., Verney, D., and Trzaska, W. H.

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Hadron, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 7. Clean energy, 01 natural sciences, Semi-empirical mass formula, Yield (chemistry), 0103 physical sciences, Physics::Atomic and Molecular Clusters, Nuclear fusion, Neutron, Atomic physics, 010306 general physics, Nuclear Experiment, Beam (structure)
Abstract

International audience; The features of fission fragments formed in the near barrier reaction $^{32}\hbox {S}$ + $^{197}\hbox {Au}$ ($E^\mathrm{lab}_\mathrm{beam}=166\,\hbox {MeV}$) are investigated. The measurement was performed at the ALTO facility of IPN Orsay, France, with the aim of clarifying the quantitative contribution of the quasi-fission process to the total fission events. The mass and total kinetic energy of the fission fragments were compared to the expectations of the liquid drop model, revealing an asymmetric fission component which may be traced back to a quasi-fission process mixed with the fusion–fission events. The $\gamma $-rays and neutrons measured in coincidence with the fission fragments were used to yield additional information for the discrimination of the two aforementioned mechanisms. All observed trends are consistent and fairly well reproduced by the statistical model.

Published
2020
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11. Lifetime measurements of short-lived excited states, and shape changes in As69 and Ge66 nuclei

Author

S. Brambilla, M. Zieblinski, T. Hüyük, R. Menegazzo, M. Matejska-Minda, F. Recchia, W. Meczynski, S. Leoni, C. Michelagnoli, E. Farnea, B. Fornal, B. Szpak, P. Bednarczyk, E. Sahin, G. Jaworski, W. Y. Liang, A. Maj, C. A. Ur, J. Styczen, G. de Angelis, M. Krzysiek, M. Ciemala, M. Palacz, Furong Xu, Sibel Zehra Aydin, M. Kmiecik, and R. Wadsworth

Subjects
Physics, 010308 nuclear & particles physics, Excited state, 0103 physical sciences, Atomic physics, 010306 general physics, 01 natural sciences
Published
2019
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12. Lifetime measurements in Ti52,54 to study shell evolution toward N=32

Author

A. Lemasson, W. Korten, Thomas Braunroth, Herbert Hess, C. Müller-Gatermann, C. Domingo-Pardo, J. Simpson, I. Burrows, S. Leoni, P. Reiter, C. Fransen, A. Vogt, Bertrand Jacquot, C. Houarner, D. M. Cullen, C. Henrich, A. Lefevre, A. Atac, M. Zielińska, M. Ciemala, N. Ménard, F. Legruel, A. J. Boston, J. Eberth, A. Goldkuhle, M. Labiche, H. C. Boston, Alberto Pullia, G. Voltolini, K. O. Zell, A. Korichi, J. Ljungvall, R. M. Pérez-Vidal, L. Ménager, J.-L. Foucher, C. Barthe-Dejean, C. Michelagnoli, Diego Barrientos, A. Dewald, J. Ropert, B. Birkenbach, Y. H. Kim, O. Stezowski, P. Bourgault, A. Blazhev, G. Frémont, J. Goupil, D. Ralet, Bo Cederwall, G. Benzoni, Ch. Theisen, N. Warr, A. Gadea, H. J. Li, A. Maj, Johan Nyberg, M. D. Salsac, S. M. Lenzi, M. Jean, J. J. Valiente Dobon, C. Maugeais, L. Legeard, P. Gangnant, A. Navin, M. Ozille, B. Million, M. Tripon, B. S. Nara Singh, Enrique Sanchis, D. R. Napoli, Emyr Clement, J. Dudouet, F. Saillant, Vicente González, F. Recchia, Ch. Schmitt, H. Munoz, Zs. Podolyák, B. Raine, M. Beckers, Roberto Menegazzo, D. Mengoni, J. Cacitti, J. Litzinger, J. Jolie, D. S. Judson, C. Spitaels, and M. Toulemonde

Subjects
Plunger, Physics, 010308 nuclear & particles physics, Excited state, Nuclear Theory, 0103 physical sciences, Shell (structure), Atomic physics, Nuclear Experiment, 010306 general physics, 7. Clean energy, 01 natural sciences
Abstract

Lifetimes of the excited states in the neutron-rich Ti-52,Ti-54 nuclei, produced in a multinucleon-transfer reaction, were measured by employing the Cologne plunger device and the recoil-distance D ...

Published
2019
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13. Energy response and identification efficiency of CsI(Tl) crystals irradiated with energetic protons

Author

A.J. Kordyasz, M. Zieblinski, S. Upadhyahya, R. Bougault, M. Henri, A. Chibhi, E. Bonnet, Andrea Stefanini, N. Cieplicka-Oryńczak, M. Cinausero, C. Frosin, M. Ciemala, Simone Valdré, D. Fabris, F. Gramegna, Giovanni Casini, Giuseppe Verde, Gabriele Pasquali, D. Gruyer, A. Camaiani, O. Lopez, Alessandro Olmi, B. Sowicki, A. Buccola, M. Bruno, Silvia Piantelli, K. Mazurek, T. Marchi, M. Matejska-Minda, G. Mantovani, A. Maj, Ivano Lombardo, B. Borderie, Magda Cicerchia, Giacomo Poggi, E. Vient, P. Ottanelli, Maurizio Bini, J Dueñs, J.D. Frankland, Sandro Barlini, N. Le Neindre, M. Parlog, 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), Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), 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 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
History, Materials science, 010308 nuclear & particles physics, 7. Clean energy, 01 natural sciences, 030218 nuclear medicine & medical imaging, Computer Science Applications, Education, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, Physics::Accelerator Physics, Irradiation, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Atomic physics, Nuclear Experiment, Energy (signal processing)
Abstract

Proton energy calibration and identification efficiency of few Thallium activated Cesium Iodide (CsI(Tl)) crystals of the FAZIA detection system, have been studied in the range 59-180 MeV by using the proton beam delivered by the cyclotron of the CCB (Cyclotron Center Bronowice) facility. We observe that the light output versus energy is linear in the lower investigated energy range while showing a deviation from linearity above 140 MeV. The effects of proton induced nuclear reactions and multiple scattering causing incomplete energy deposition (IED) events have been identified and estimated via Pulse Shape Analysis in CsI(Tl) crystals. The measured experimental efficiency for proton identification in the examined energy range is then compared with GEANT4 simulations. For a centered collimated irradiation on the crystal, and at the highest measured energy, the resulting experimental efficiency value is about 70%.

Published
2019
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14. Measurement of the $\gamma$ Decay from the Energy Region of the Pygmy Dipole States Excited in the $^{208}$Pb$(p,p'\gamma )$ Reaction at CCB

Author

M. Matejska-Minda, Piotr Pawłowski, P. J. Napiorkowski, A. Bracco, M. Zieblinski, J. Grebosz, Y. Sobolev, B. Wasilewska, M. Kmiecik, S. Brambilla, P. Bednarczyk, F. C. L. Crespi, N. Cieplicka-Oryńczak, M. Krzysiek, M. Ciemala, J. Łukasik, K. Mazurek, A. Maj, K. Guguła, Izabela Ciepał, M. Lewitowicz, Ch. Schmitt, M.N. Harakeh, B. Sowicki, B. Fornal, M. Jeżabek, M. Kicińska-Habior, P. Kulessa, 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Research unit Nuclear & Hadron Physics, 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 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, 010308 nuclear & particles physics, Cyclotron, Nuclear structure, Gamma ray, General Physics and Astronomy, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Spectral line, law.invention, Nuclear physics, Dipole, law, Excited state, 0103 physical sciences, Nuclear Experiment
Abstract

International audience; For a few years, the medical cyclotron Proteus C-235 at the Cyclotron Centre Bronowice in Kraków, Poland has been regularly used for nuclear structure experiments. One of the ongoing studies is focused on the γ decay of collective states populated in (p, p0γ) reactions. In a recent experiment, γ decays of excited states in the energy region of the Pygmy Dipole States in 208Pb have been observed. Good efficiency and energy resolution provided by the PARIS clusters and LaBr3:Ce scintillators facilitate a comparison of the obtained energy spectra with previous measurements of pygmy states in this nucleus.

Published
2019
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15. Evidence of octupole-phonons at high spin in 207Pb

Author

B. Quintana Arnés, G. Bocchi, R. Perez, Raymond J. Carroll, W. Korten, Alberto Pullia, M. Labiche, Zs. Podolyák, A. Navin, Enrique Sanchis, F. Saillant, Norbert Pietralla, F. C. L. Crespi, C. M. Shand, E. Dupont, B. Fornal, D. Kocheva, Diego Barrientos, O. Stezowski, P. Reiter, L. Atanasova, M. Ciemala, Herbert Hess, Roberto Menegazzo, D. Mengoni, B. Birkenbach, J. Collado, H.J. Eberth, Bo Cederwall, D. Ralet, B. Million, A. Maj, P. Van Isacker, D. Wilmsen, J. J. Valiente Dobon, J. Dudouet, F. Recchia, P. Bednarczyk, M. Rejmund, Georgi P. Georgiev, Andrew Stuchbery, A. Goasduff, A. Lemasson, Deyan Yordanov, P. R. John, Salsac, R. L. Lozeva, A. Jungclaus, C. Michelagnoli, A. Blazhev, J. Goupil, S. Franchoo, A. Gadea, L. J. Harkness, Johan Nyberg, S. M. Lenzi, D. L. Balabanski, D. M. Cullen, I. Burrows, T. Konstantinopoulos, Emyr Clement, H. C. Boston, O. Wieland, C. Theisen, A. J. Boston, A. Kusoglu, C. Fransen, A. Korichi, S. Leoni, C. Müller-Gatermann, J. Ljungvall, 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), 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 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), 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 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 Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), 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 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 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), and Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Plunger device, Phonon, Nuclear Theory, Octupole phonon, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], gamma-Ray tracking, γ -Ray tracking, 01 natural sciences, 7. Clean energy, Recoil, VAMOS++ spectrometer, AGATA spectrometer, Nuclear deformation, γ-Ray tracking, 0103 physical sciences, Physics::Atomic Physics, Nuclear Experiment, 010306 general physics, Spin (physics), Physics, VAMOS plus plus spectrometer, 010308 nuclear & particles physics, lcsh:QC1-999, Atomic physics, lcsh:Physics
Abstract

A lifetime measurement of the 19/2 state in Pb has been performed using the Recoil Distance Doppler-Shift (RDDS) method. The nuclei of interest were produced in multi-nucleon transfer reactions induced by a Pb beam impinging on a Mo enriched target. The beam-like nuclei were detected and identified in terms of their atomic mass number in the VAMOS++ spectrometer while the prompt γ rays were detected by the AGATA tracking array. The measured large reduced transition probability B(E3,19/2→13/2)=40(8) W.u. is the first indication of the octupole phonon at high spin in Pb. An analysis in terms of a particle-octupole-vibration coupling model indicates that the measured B(E3) value in Pb is compatible with the contributions from single-phonon and single particle E3 as well as E3 strength arising from the double-octupole-phonon 6 state, all adding coherently. A crucial aspect of the coupling model, namely the strong mixing between single-hole and the phonon-hole states, is confirmed in a realistic shell-model calculation.

Published
2019
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16. Pseudospin Symmetry and Microscopic Origin of Shape Coexistence in the Ni78 Region: A Hint from Lifetime Measurements

Author

C. Delafosse, D. Verney, P. Marević, A. Gottardo, C. Michelagnoli, A. Lemasson, A. Goasduff, J. Ljungvall, E. Clément, A. Korichi, G. De Angelis, C. Andreoiu, M. Babo, A. Boso, F. Didierjean, J. Dudouet, S. Franchoo, A. Gadea, G. Georgiev, F. Ibrahim, B. Jacquot, T. Konstantinopoulos, S. M. Lenzi, G. Maquart, I. Matea, D. Mengoni, D. R. Napoli, T. Nikšić, L. Olivier, R. M. Pérez-Vidal, C. Portail, F. Recchia, N. Redon, M. Siciliano, I. Stefan, O. Stezowski, D. Vretenar, M. Zielinska, D. Barrientos, G. Benzoni, B. Birkenbach, A. J. Boston, H. C. Boston, B. Cederwall, L. Charles, M. Ciemala, J. Collado, D. M. Cullen, P. Désesquelles, G. de France, C. Domingo-Pardo, J. Eberth, V. González, L. J. Harkness-Brennan, H. Hess, D. S. Judson, A. Jungclaus, W. Korten, A. Lefevre, F. Legruel, R. Menegazzo, B. Million, J. Nyberg, B. Quintana, D. Ralet, P. Reiter, F. Saillant, E. Sanchis, Ch. Theisen, and J. J. Valiente Dobon

Subjects
Physics, Valence (chemistry), Proton, 010308 nuclear & particles physics, General Physics and Astronomy, 01 natural sciences, Particle identification, Recoil, Excited state, 0103 physical sciences, Quadrupole, Neutron, AGATA, Atomic physics, 010306 general physics
Abstract

Lifetime measurements of excited states of the light N = 52 isotones 88 Kr , 86 Se , and 84 Ge have been performed, using the recoil distance Doppler shift method and VAMOS and AGATA spectrometers for particle identification and gamma spectroscopy, respectively. The reduced electric quadrupole transition probabilities B ( E 2 ; 2 + → 0 + ) and B ( E 2 ; 4 + → 2 + ) were obtained for the first time for the hard-to-reach 84 Ge . While the B ( E 2 ; 2 + → 0 + ) values of 88 Kr , 86 Se saturate the maximum quadrupole collectivity offered by the natural valence ( 3 s , 2 d , 1 g 7 / 2 , 1 h 11 / 2 ) space of an inert 78 Ni core, the value obtained for 84 Ge largely exceeds it, suggesting that shape coexistence phenomena, previously reported at N ≲ 49 , extend beyond N = 50 . The onset of collectivity at Z = 32 is understood as due to a pseudo-SU(3) organization of the proton single-particle sequence reflecting a clear manifestation of pseudospin symmetry. It is realized that the latter provides actually reliable guidance for understanding the observed proton and neutron single particle structure in the whole medium-mass region, from Ni to Sn, pointing towards the important role of the isovector-vector ρ field in shell-structure evolution.

Published
2018
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17. Testing of the Brink--Axel Hypothesis with the HECTOR+PARIS+KRATTA Set-up

Author

N. Cieplicka-Oryńczak, M. Krzysiek, S. Brambilla, M. Ciemala, P. Bednarczyk, A. Maj, A. Bracco, P. J. Napiorkowski, J. Łukasik, J. Isaak, Izabela Ciepał, B. Fornal, P. Lasko, L. Qi, M. Stanoiu, Y. Sobolev, M. Lewitowicz, S. Bottoni, M. Matejska-Minda, Ch. Schmitt, Piotr Pawłowski, B. Wasilewska, Mohsen Harakeh, K. Guguła, Wiktor Parol, Ł. W. Iskra, F. C. L. Crespi, M. Zieblinski, S. Kihel, J. Grebosz, Atsushi Tamii, M. Kmiecik, A. Szperłak, B. Sowicki, K. Mazurek, Attila Krasznahorkay, 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), 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 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), Université de Strasbourg (UNISTRA)-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 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, Set (abstract data type), [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, Art history, Physics::Accelerator Physics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, 01 natural sciences
Abstract

International audience; A very first experiment in the field of nuclear structure at the Cyclotron Centre Bronowice (CCB) facility in Kraków, Poland has been performed recently. The medical cyclotron IBA Proteus C-235 located at CCB produces proton beams in the energy range of 70–230 MeV, that can be used for experimental purposes as well. In the reported measurement, the energy of scattered protons at the incident beam energy of 85 MeV and emitted γ rays from the excited 208Pb target were measured in coincidence. During the experiment excitations in the energy region of the Giant Quadrupole and Dipole Resonances, as well as the Pygmy Dipole States were observed. By applying different conditions on the data, spectra corresponding to γ decays of excited states to selected low-lying levels in 208Pb were obtained, allowing a look into the Brink–Axel hypothesis.

Published
2018
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18. Spectroscopy of nuclei around Sn100 populated via two-neutron knockout reactions

Author

T. Isobe, Hiroyoshi Sakurai, Alessandra Corsi, Yoshiaki Shiga, T. Motobayashi, F. Nowacki, K. Matsui, Y. Tanimura, V. Lapoux, Nori Aoi, Hiroyuki Sagawa, D. Sohler, H. Baba, Shuichi Ota, S. Boissinot, Masafumi Matsushita, Daiki Nishimura, A. Gillibert, M. Ciemala, A. Obertelli, Jenny Lee, Satoshi Takeuchi, C. Santamaria, P. Bednarczyk, Ryo Taniuchi, David Steppenbeck, Hua-Lei Wang, P. Doornenbal, A. Jungclaus, and E. C. Pollacco

Subjects
Physics, 010308 nuclear & particles physics, Nuclear Theory, chemistry.chemical_element, 01 natural sciences, Molecular physics, 3. Good health, Cross section (geometry), chemistry, Excited state, 0103 physical sciences, Neutron, Gamma spectroscopy, Nuclear Experiment, 010306 general physics, Nucleon, Spectroscopy, Carbon, Beam energy
Abstract

We report on the in-beam gamma spectroscopy of Sn102 and Cd100 produced via two-neutron removal from carbon and CH2 targets at about 150 MeV/nucleon beam energy. New transitions assigned to the decay of a second 2+ excited state at 2470(60) keV in Sn102 were observed. Two-neutron removal cross sections from Sn104 and Cd102 have been extracted. The enhanced cross section to the 22+ in Sn102 populated via the (p,p2n) reaction is traced back to an increase of shell-model structure overlaps, consistent with the hypothesis that the proton-induced two-deeply bound-nucleon removal mechanism is of direct nature.

Published
2018
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19. Quadrupole collectivity in Ca42 from low-energy Coulomb excitation with AGATA

Author

D. Mengoni, M. Kisieliński, G. Anil Kumar, M. Kicińska-Habior, D. Karpiński, G. Lehaut, S. F. Özmen, A. Colombo, F. Recchia, R. Menegazzo, J. Iwanicki, F. Azaiez, B. Million, J. Eberth, D. M. Cullen, N. Toniolo, G. Maron, G. de Angelis, M. Krzysiek, O. Stezowski, P. Reiter, B. Birkenbach, D. T. Doherty, M. D. Salsac, P. J. Coleman-Smith, M. Kowalczyk, M. Gulmini, B. Bounthong, J. Srebrny, S. Franchoo, Hans-Jurgen E. Hess, K. Rusek, M. Ciemala, A. Obertelli, J. L. Wood, S. Leoni, H. Naïdja, C. Michelagnoli, A. Giaz, D. Bazzacco, G. Benzoni, J. Styczen, A. Gottardo, L. Berti, R. Wadsworth, E. Farnea, W. Korten, M. Komorowska, F. C. L. Crespi, Ch. Theisen, M. Kmiecik, A. Jungclaus, Megumi Niikura, D. S. Judson, K. Mazurek, S. Brambilla, B. Dulny, T. Abraham, Joël Chavas, Roberto Isocrate, F. Camera, Tomás R. Rodríguez, P. Bednarczyk, I. Stefan, A. Czermak, L. Charles, G. Jaworski, P. Désesquelles, M. Zieblinski, B. Bruyneel, B. Fornal, X. Grave, S. Lunardi, J. Grebosz, N. Kondratyev, Andreas Görgen, K. Wrzosek-Lipska, G. Rampazzo, Pär-Anders Söderström, Marco Bellato, E. Merchan, Andreas Wiens, Alessandra Corsi, T. Habermann, L. Próchniak, P. J. Napiorkowski, M. Zielińska, A. Lopez-Martens, C. A. Ur, B. Wasilewska, K. Hadynska-Klek, Begoña Quintana, D. Rosso, J. Ljungvall, E. Sahin, A. Gadea, A. Korichi, A. Maj, F. Nowacki, P. Cocconi, Alberto Pullia, Bo Cederwall, N. Karkour, Damiano Bortolato, J. J. Valiente Dobon, D. R. Napoli, W. Meczynski, N. Redon, S. Myalski, and M. Palacz

Subjects
Physics, Sideband, 010308 nuclear & particles physics, Coulomb excitation, 01 natural sciences, Matrix (mathematics), Excited state, 0103 physical sciences, Quadrupole, AGATA, Sum rule in quantum mechanics, Atomic physics, 010306 general physics, Beam (structure)
Abstract

A Coulomb-excitation experiment to study electromagnetic properties of Ca42 was performed using a 170-MeV calcium beam from the TANDEM XPU facility at INFN Laboratori Nazionali di Legnaro. γ rays from excited states in Ca42 were measured with the AGATA spectrometer. The magnitudes and relative signs of ten E2 matrix elements coupling six low-lying states in Ca42, including the diagonal E2 matrix elements of 21+ and 22+ states, were determined using the least-squares code gosia. The obtained set of reduced E2 matrix elements was analyzed using the quadrupole sum rule method and yielded overall quadrupole deformation for 01,2+ and 21,2+ states, as well as triaxiality for 01,2+ states, establishing the coexistence of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in Ca42. The experimental results were compared with the state-of-the-art large-scale shell-model and beyond-mean-field calculations, which reproduce well the general picture of shape coexistence in Ca42.

Published
2018
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20. Gamma rays as probe of fission and quasi-fission dynamics in the reaction 32S + 197Au near the Coulomb barrier

Author

A. Bracco, E. M. Kozulin, B. de Canditiis, Wladyslaw Henryk Trzaska, I. M. Itkis, C. Petrone, Emanuele Vardaci, V. V. Kirakosyan, P. K. Rath, I. M. Harca, I. Matea, G. Sposito, S. Calinescu, O. Stezowski, C. Schmitt, A. Pulcini, D. Quero, James R. Wilson, N. I. Kozulina, G. La Rana, E. Saveleva, G. N. Knyazheva, K. V. Novikov, S. Brambilla, F. Camera, I. V. Kolesov, M. Ciemala, M. Ashaduzzaman, O. Dorvaux, C. Borcea, A. Maj, Giuseppe Mandaglio, Antonio Trifirò, Marina Trimarchi, Pulcini, A., Vardaci, E., Kozulin, E., Ashaduzzaman, M., Borcea, C., Bracco, A., Brambilla, S., Calinescu, S., Camera, F., Ciemala, M., De Canditiis, Bartolomeo, Dorvaux, O., Harca, I. M., Itkis, I., Kirakosyan, V. V., Knyazheva, G., Kozulina, N., Kolesov, I. V., La Rana, G., Maj, A., Matea, I., Novikov, K., Petrone, C., Quero, D., Rath, P., Saveleva, E., Schmitt, C., Sposito, G., Stezowski, O., Trzaska, W. H., Wilson, J., 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), 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), 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), 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), 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)-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 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)-Centre National de la Recherche Scientifique (CNRS), Mandaglio, Giuseppe, Trifirò, Antonio, and Trimarchi, Marina

Subjects
Physics, History, Angular momentum, Spectrometer, 010308 nuclear & particles physics, Fission, Detector, gamma radiation, Gamma ray, Coulomb barrier, gammasäteily, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Coincidence, Computer Science Applications, Education, Nuclear physics, nuclear fission, fissio, nuclear physics, 0103 physical sciences, Multiplicity (chemistry), 010306 general physics, ydinfysiikka, Nuclear Experiment
Abstract

International audience; Compound nucleus fission and quasi-fission are both binary decay channels whose common properties make the experimental separation between them difficult. A way to achieve this separation could be to probe the angular momentum of the binary fragments. This can be done detecting gamma rays in coincidence with the two fragments. As a case study, the reaction 32S + 197Au near the Coulomb barrier has been performed at the Tandem ALTO facility at IPN ORSAY. ORGAM and PARIS, two different gamma detectors arrays, are coupled with the CORSET detector, a two-arm time-of-flight spectrometer. TOF-TOF data were analyzed to reconstruct the mass-energy distribution of the primary fragments coupled with gamma multiplicity and spectroscopic analysis. Preliminary results of will be shown.

Published
2018
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21. Towards the lowest-energy limit for light ions identification with silicon pixel-type detectors

Author

S. Brambilla, F. C. L. Crespi, B. Fornal, S. Capra, G. Bocchi, C. Boiano, G. Jaworski, N. Cieplicka-Oryńczak, M. Siciliano, M. Ciemala, K. Hadynska-Klek, J. J. Valiente-Dobón, D. Mengoni, D. Bazzacco, Ł. W. Iskra, P. R. John, J.A. Dueñas, G. Benzoni, Alain Goasduff, S. Leoni, F. Recchia, and D. Testov

Subjects
Physics, Nuclear and High Energy Physics, Silicon, 010308 nuclear & particles physics, Detector, chemistry.chemical_element, Alpha particle, Kinetic energy, 01 natural sciences, Particle identification, Ion, Nuclear physics, chemistry, 0103 physical sciences, Nuclear fusion, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

An in-beam test of two pixel-type silicon detectors of the TRACE detector project has been performed at Laboratori Nazionali di Legnaro (Italy). The aim was to investigate the lowest kinetic energy values at which isotopic identification of heavy-ion reactions products with mass $ A\sim 10$ is possible, by using a single-layer silicon detector. Two separate read-out chains, analog and digital, were used, and the Pulse Shape Analysis technique was employed to obtain the particle identification matrices for the digitally processed data. The results confirmed the high capability of the Pulse Shape Analysis method which can be used for light ion identification, with performances similar to the analog approach. Separation in both charge and mass was obtained for Li and Be isotopes, however, the presence of a significant background from alpha particles severely limited the data analysis in the lower energy region. Due to this effect, the identification of the light products (7, 6Li isotopes) could be possible down to $ \sim 24.5$ MeV only, while the 9, 7Be isotopes were separable down to $ \sim 29$ MeV. This gives the value of $ < 4$ MeV/nucleon as the lowest kinetic energy for light products identification by using the pixel-type detectors of the TRACE project, in the present experimental conditions.

Published
2018

22. Neutron-rich nuclei produced at zero degrees in damped collisions induced by a beam of 18O on a 238U target

Author

A. Maj, C. Portail, F. Rotaru, B. Fornal, M. A. Naumenko, L. Olivier, F. de Oliveira Santos, S. Franchoo, A. Chbihi, P. Bednarczyk, A. V. Karpov, C. Petrone, Bertrand Jacquot, Oleg B. Tarasov, Ł. W. Iskra, Yu. E. Penionzhkevich, F. Azaiez, T. Lauritsen, D. Verney, M. Stanoiu, B. Szpak, F. C. L. Crespi, M. Maccormick, O. Sorlin, O. Kamalou, H. Savajols, I. Stefan, R. V. F. Janssens, I. Matea, N. Cieplicka-Oryńczak, M. Ciemala, Dieter Ackermann, Y. Blumenfeld, S. Leoni, Paola Marini, S. Calinescu, F. Hammache, M. Lewitowicz, S. M. Lukyanov, J. C. Thomas, 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), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université 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 Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Scattering, Projectile, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, lcsh:QC1-999, Momentum, Nuclear physics, Cross section (physics), Deep-inelastic collisions, 0103 physical sciences, Neutron, Nuclear reactions, 010306 general physics, Nuclear Experiment, Beam (structure), lcsh:Physics, Exotic nuclei
Abstract

Cross sections and corresponding momentum distributions have been measured for the first time at zero degrees for the exotic nuclei obtained from a beam of 18O at 8.5 MeV/A impinging on a 1 mg/cm2 238U target. Sizable cross sections were found for the production of exotic species arising from the neutron transfer and proton removal from the projectile. Comparisons of experimental results with calculations based on deep-inelastic reaction models, taking into account the particle evaporation process, indicate that zero degree is a scattering angle at which the differential reaction cross section for production of exotic nuclei is at its maximum. This result is important in view of the new generation of zero degrees spectrometers under construction, such as the S3 separator at GANIL, for example. Keywords: Nuclear reactions, Deep-inelastic collisions, Exotic nuclei

Published
2018
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23. Gamma decay of pygmy states in $^{90,94}$Zr from inelastic scattering of light ions

Author

D. Montanari, L. Morris, Y. D. Fang, M. Spieker, Takeshi Koike, Johann Isaak, P. J. Davies, B. Wasilewska, T. Klaus, Deniz Savran, Shumpei Noji, C. Sullivan, G. Gey, O. Wieland, M. Kumar Raju, J. J. Carroll, G. Steinhilber, S. Zhu, T. H. Hoang, A. Czeszumska, X. K. Zhou, A. Inoue, S. G. Pickstone, N. Ichige, D. G. Jenkins, A. S. Brown, Atsushi Tamii, Nobumichi Kobayashi, Tetsuya Yamamoto, Nori Aoi, N. Blasi, F. Camera, A. Bracco, V. Werner, A. Maj, M. L. Liu, O. H. Jin, Eiji Ideguchi, M. P. Carpenter, C. Iwamoto, Yasuo Yamamoto, H. Fujita, S. Bassauer, M. Krzysiek, M. Ciemala, F. C. L. Crespi, L. M. Donaldson, D. L. Balabanski, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, History, Scintillation, Spectrometer, 010308 nuclear & particles physics, Gamma ray, Inelastic scattering, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Resonance (particle physics), Computer Science Applications, Education, Ion, Nuclear physics, Dipole, 0103 physical sciences, ddc:530, 010306 general physics, Hpge detector, Nuclear Experiment
Abstract

International audience; We performed experiments to study the low-energy part of the E1 response (Pygmy Dipole Resonance) in $^{90,94}$Zr nuclei, by measuring the (p,p’γ) and (α,α’γ) inelastic scattering reactions at energies Ebeam,p = 80 MeV and Ebeam,α = 130 MeV respectively. The inelastically scattered particles were measured by employing the high-resolution spectrometer Grand Raiden. The gamma-rays emitted following the de-excitation of the Zr target nuclei were detected using both the clover type HPGe detectors of the CAGRA array and the large volume LaBr3:Ce scintillation detectors from the HECTOR+ array. Some preliminary results are presented here.

Published
2017
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24. Measurement of lifetimes in Fe62,64,Co61,63 , and Mn59

Author

M. Klintefjord, J. Ljungvall, A. Görgen, S. M. Lenzi, F. L. Bello Garrote, A. Blazhev, E. Clément, G. de France, J.-P. Delaroche, P. Désesquelles, A. Dewald, D. T. Doherty, C. Fransen, A. Gengelbach, G. Georgiev, M. Girod, A. Goasduff, A. Gottardo, K. Hadyńska-Klȩk, B. Jacquot, T. Konstantinopoulos, A. Korichi, A. Lemasson, J. Libert, A. Lopez-Martens, C. Michelagnoli, A. Navin, J. Nyberg, R. M. Pérez-Vidal, S. Roccia, E. Sahin, I. Stefan, A. E. Stuchbery, M. Zielińska, D. Barrientos, B. Birkenbach, A. Boston, L. Charles, M. Ciemala, J. Dudouet, J. Eberth, A. Gadea, V. González, L. Harkness-Brennan, H. Hess, A. Jungclaus, W. Korten, R. Menegazzo, D. Mengoni, B. Million, A. Pullia, D. Ralet, F. Recchia, P. Reiter, M. D. Salsac, E. Sanchis, O. Stezowski, Ch. Theisen, and J. J. Valiente Dobon

Subjects
Physics, 010308 nuclear & particles physics, 0103 physical sciences, Creative commons, 010306 general physics, 01 natural sciences, Engineering physics
Abstract

M. Klintefjord et al. -- 11 pags., 8 figs., 1 tab. -- Open Access funded by Creative Commons Atribution Licence 4.0

Published
2017
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25. Experimental study of the isovector giant dipole resonance in Zr80 and Rb81

Author

C. A. Ur, R. Nicolini, D. Bazzacco, F. Recchia, M. Kmiecik, A. Bracco, A. Giaz, D. Mengoni, S. Brambilla, G. Benzoni, A. Gottardo, S. Bottoni, N. Blasi, E. Sahin, S. Ceruti, S. Leoni, Stefano Riboldi, V. Modamio, R. Avigo, G. Bocchi, D. R. Napoli, D. Montanari, B. Million, F. C. L. Crespi, A. I. Morales, Oliver Wieland, E. Farnea, C. Michelagnoli, M. Ciemala, J. J. Valiente-Dobón, Luna Pellegri, B. Wasilewska, M. Zieblinski, F. Camera, A. Maj, and A. Mentana

Subjects
Physics, Isovector, 010308 nuclear & particles physics, Nuclear Theory, Resonance, 01 natural sciences, Dipole, Nuclear magnetic resonance, 0103 physical sciences, Coulomb, Nuclear fusion, AGATA, Atomic physics, Nuclear Experiment, 010306 general physics, Energy (signal processing), Excitation
Abstract

The isovector giant dipole resonance (IVGDR) $\ensuremath{\gamma}$ decay was measured in the compound nuclei $^{80}\mathrm{Zr}$ and $^{81}\mathrm{Rb}$ at an excitation energy of ${E}^{*}=54$ MeV. The fusion reaction $^{40}\mathrm{Ca}+^{40}\mathrm{Ca}$ at ${E}_{\mathrm{beam}}=136$ MeV was used to form the compound nucleus $^{80}\mathrm{Zr}$, while the reaction $^{37}\mathrm{Cl}+^{44}\mathrm{Ca}$ at ${E}_{\mathrm{beam}}=95$ MeV was used to form the compound nucleus $^{81}\mathrm{Rb}$ at the same excitation energy. The IVGDR parameters extracted from the analysis were compared with the ones found at higher excitation energy (${E}^{*}=83$ MeV). The comparison allows one to observe two different nuclear mechanisms: (i) the IVGDR intrinsic width remains constant with the excitation energy in the nucleus $^{81}\mathrm{Rb}$; (ii) the isospin-violating spreading width (i.e., Coulomb spreading width) remains constant with the excitation energy in the nucleus $^{80}\mathrm{Zr}$. The experimental setup used for the $\ensuremath{\gamma}$-ray detection was composed by the AGATA demonstrator array coupled to the large-volume ${\mathrm{LaBr}}_{3}$:Ce detectors of the ${\mathrm{HECTOR}}^{+}$ array.

Published
2017
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26. Pygmy dipole resonance in 124Sn populated by inelastic scattering of 17O

Author

A. Pullia, J. Eberth, Sunniva Siem, D. R. Napoli, N. Karkour, S. Lunardi, A. Giaz, D. S. Judson, K. Mazurek, Elena Litvinova, A. Gottardo, P. Molini, Roman Gernhäuser, F. Recchia, S. Ceruti, Begoña Quintana, R. Avigo, D. Bazzacco, R. Nicolini, P. Bednarczyk, Roberto Menegazzo, M. Kmiecik, D. Mengoni, A. Bracco, S. Brambilla, P. A. Söderström, L. Charles, M. Zieblinski, P. Désesquelles, A. I. Morales, Marco Bellato, J. Grebosz, G. Benzoni, Luna Pellegri, O. Wieland, B. Birkenbach, J. Simpson, C. Michelagnoli, O. Stezowski, C. A. Ur, Bo Cederwall, S. Leoni, M.D. Salsac, G. de Angelis, A. Maj, E. Farnea, Ch. Theisen, J. J. Valiente Dobon, Roberto Isocrate, C. Boiano, Herbert Hess, M. Krzysiek, F. Camera, M. Ciemala, Andreas Görgen, S. Bottoni, E. G. Lanza, N. Blasi, B. Siebeck, F. C. L. Crespi, A. Gadea, D. Bortolato, P. Reiter, V. Vandone, B. Million, J. Jolie, A. Jungclaus, and SCOAP

Subjects
Elastic scattering, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Isoscalar, Gamma ray, Inelastic scattering, 01 natural sciences, 7. Clean energy, Resonance (particle physics), lcsh:QC1-999, Isospin character, Low-lying electric dipole excitations, Ion, Nuclear physics, Dipole, Low-lying electric dipole excitations 124Sn, 0103 physical sciences, AGATA, Atomic physics, 010306 general physics, 124Sn, lcsh:Physics
Abstract

L. Pellegri et al. ; 5 pags. ; 6 figs. ; open access article under the CC BY license. Funded by SCOAP3, © 2014 The Authors. The γ decay from the high-lying states of 124Sn was measured using the inelastic scattering of 17O at 340 MeV. The emitted γ rays were detected with high resolution with the AGATA demonstrator array and the scattered ions were detected in two segmented δE-E silicon telescopes. The angular distribution was measured both for the γ rays and the scattered 17O ions. An accumulation of E1 strength below the particle threshold was found and compared with previous data obtained with (γ, γ') and (α, α'γ) reactions. The present results of elastic scattering, and excitation of E2 and E1 states were analysed using the DWBA approach. From this comprehensive description the isoscalar component of the 1- excited states was extracted. The obtained values are based on the comparison of the data with DWBA calculations including a form factor deduced using a microscopic transition density., Grant No. 2011/03/B/ST2/01894; (iii) the National Superconducting Cyclotron Laboratory at MSU; (iv) the US NSF Grant PHY-1204486; and the German BMBF under Grant 06KY9136.

Published
2014
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27. Superdeformed and Triaxial States in Ca 42

Author

G. Benzoni, Bo Cederwall, M. Komorowska, Begoña Quintana, D. Rosso, J. Styczen, Damiano Bortolato, J. J. Valiente Dobon, P. Bednarczyk, L. Charles, M. Ziȩbliński, W. Korten, R. Nicolini, L. Próchniak, P. Reiter, D. R. Napoli, T. Habermann, A. Maj, A. Gottardo, L. Berti, A. Lopez-Martens, G. Rampazzo, J. L. Wood, F. Nowacki, P. J. Coleman-Smith, C. Michelagnoli, B. Bounthong, S. Franchoo, P. Cocconi, T. Abraham, J. Ljungvall, Marco Bellato, M. Kicińska-Habior, P. Désesquelles, G. Anil Kumar, J. Mierzejewski, N. Kondratyev, K. Hadyńska-Klȩk, A. Korichi, P. A. Söderström, E. Sahin, Agnese Giaz, M. Kisieliński, F. Recchia, Benedicte Million, X. Grave, A. Gadea, N. Toniolo, S. F. Özmen, G. Maron, O. Stezowski, D. Karpiński, E. Farnea, S. Lunardi, S. Leoni, H. Naïdja, M. Palacz, J. Srebrny, D. Bazzacco, J. Iwanicki, F. Azaiez, B. Dulny, Joël Chavas, Roberto Isocrate, Alberto Pullia, G. Jaworski, P. J. Napiorkowski, J. Eberth, M. Gulmini, M. Kmiecik, Megumi Niikura, G. de Angelis, V. Vandone, M. Krzysiek, N. Karkour, F. C. L. Crespi, I. Stefan, B. Bruyneel, Ch. Theisen, M. Ciemala, A. Obertelli, M. Zielinska, Andrea Corsi, D. M. Cullen, B. Fornal, R. Menegazzo, C. A. Ur, K. Rusek, R. Wadsworth, A. Colombo, S. Myalski, G. Lehaut, A. Jungclaus, M. Kowalczyk, A. Czermak, W. Mȩczyński, B. Birkenbach, D. T. Doherty, M. D. Salsac, D. S. Judson, K. Mazurek, J. Grȩbosz, D. Mengoni, Tomás R. Rodríguez, B. Wasilewska, S. Brambilla, F. Camera, Andreas Görgen, E. Merchan, Andreas Wiens, K. Wrzosek-Lipska, Herbert Hess, N. Redon, European Commission, Federal Ministry of Education and Research (Germany), National Science Centre (Poland), Generalitat Valenciana, Nuclear Astrophysics Virtual Institute (Germany), Helmholtz Association, Ministerio de Economía y Competitividad (España), Research Council of Norway, Laboratori Nazionali di Legnaro, Helmholtz Centre for Heavy Ion Research, and University of Warsaw

Subjects
Physics, Sideband, 010308 nuclear & particles physics, SHELL model, Nuclear Theory, General Physics and Astronomy, Coulomb excitation, 7. Clean energy, 01 natural sciences, Superdeformation, Matrix (mathematics), Physics and Astronomy (all), 0103 physical sciences, AGATA, Atomic physics, 010306 general physics
Abstract

K. Hadyńska-Kl¸ek et al. ; 7 pags., 3 figs., 2 tabs., Shape parameters of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in Ca42 were determined from E2 matrix elements measured in the first low-energy Coulomb excitation experiment performed with AGATA. The picture of two coexisting structures is well reproduced by new state-of-the-art large-scale shell model and beyond-mean-field calculations. Experimental evidence for superdeformation of the band built on 02+ has been obtained and the role of triaxiality in the A∼40 mass region is discussed. Furthermore, the potential of Coulomb excitation as a tool to study superdeformation has been demonstrated for the first time. © 2016 American Physical Society, Special gratitude goes to the INFN LNL and HIL Warsaw technical staff for their support and help, in particular, the accelerator crews for providing intense and good-quality 42Ca and 32S beams. K. H.-K. acknowledges support from the Research Council of Norway under the project Grant No. 213442. T. R. R. acknowledges computing time at GSI-Darmstadt and support from Spanish MINECO under Programa Ramon y Cajal 11420 and FIS-2014-53434-P, H. N. acknowledges support from Helmholtz Association through the Nuclear Astrophysics Virtual Institute NAVI (No. VH-VI-417). We also acknowledge the support by Generalitat Valenciana, Spain, under the grant PROMETEOII/2014/019 and by the FEDER funds of the European Commission (A. Gadea), Spanish Ministerio de Economía y Competitividad under Contract No. FPA2014-57196-C5 (A. J., A. Gadea), German Bundesministerium für Bildung und Forschung (BMBF) under Contract No. 05P12PKFNE TP4 (B. Birkenbach), the Polish National Science Centre under Projects No. DEC-2013/10/M/ST2/00427, No. DPN/N190/ AGATA/2009, No. 2011/03/B/ST2/01894, No. UMO- 2014/14/M/ST2/00738 (COPIN-INFN Collaboration), and No. 2015/17/B/ST2/01534.

Published
2016
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28. Pygmy dipole resonance inCe140via inelastic scattering ofO17

Author

Alberto Pullia, S. Bottoni, A. Jungclaus, D. Bazzacco, C. A. Ur, J. Eberth, J. Ljungvall, N. Blasi, P. Reiter, M. Kmiecik, F. Recchia, A. Giaz, Herbert Hess, S. Lunardi, A. Maj, R. Menegazzo, A. Gottardo, B. Siebeck, Elena Litvinova, Oliver Wieland, E. G. Lanza, G. de Angelis, A. Bracco, Nils Paar, R. Avigo, M. Krzysiek, M. Ciemala, K. Mazurek, E. Farnea, P. Bednarczyk, S. Leoni, G. Benzoni, R Isocarte, A. I. Morales, Begoña Quintana, F. C. L. Crespi, B. Birkenbach, C. Michelagnoli, D. Rosso, R. Nicolini, M. D. Salsac, P. Désesquelles, A. Gadea, D. Mengoni, B Milion, S. Ceruti, S. Brambilla, P. A. Söderström, D. R. Napoli, F. Camera, M. Zieblinski, J. Grebosz, Andreas Görgen, J. J. Valiente-Dobón, Luna Pellegri, and Sunniva Siem

Subjects
Physics, 010308 nuclear & particles physics, Isoscalar, Form factor (quantum field theory), Inelastic scattering, 01 natural sciences, 7. Clean energy, Resonance (particle physics), Dipole, Excited state, 0103 physical sciences, Neutron, Atomic physics, Born approximation, 010306 general physics
Abstract

The γ decay from the high-lying states of ^140Ce excited via inelastic scattering of ^17O at a bombarding energy of 340 MeV was measured using the high-resolution AGATA-demonstrator array in coincidence with scattered ions detected in two segmented Δ E-E silicon detectors. Angular distributions of scattered ions and emitted γ rays were measured, as well as their differential cross sections. The excitation of 1^− states below the neutron separation energy is similar to the one obtained in reactions with the α isoscalar probe. The comparison between the experimental differential cross sections and the corresponding predictions using the distorted-wave Born approximation allowed us to extract the isoscalar component of identified 1^− pygmy states. For this analysis the form factor obtained by folding microscopically calculated transition densities and optical potentials was used.

Published
2016
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29. Charged particle decay of hot and rotatingMo88nuclei in fusion-evaporation reactions

Author

R. Nicolini, Giorgio Baiocco, Giovanni Casini, T. Marchi, Gabriele Pasquali, Sandro Barlini, M. Kmiecik, A. Bracco, O. Wieland, M. Bruno, P. Bednarczyk, B. Szpak, M. Matejska-Minda, G. Benzoni, S. Carboni, S. Brambilla, F. Gramegna, J. Styczen, A. Chbihi, Alessandra Corsi, Luca Morelli, D. Fabris, A. Olmi, A. Giaz, L. Bardelli, A. Maj, N. Blasi, Oliver J. Roberts, M. Cinausero, W. Meczynski, Silvia Piantelli, S. Leoni, Simone Valdré, J.P. Wieleczko, D. Montanari, M. Zieblinski, S. Myalski, K. Mazurek, F. Camera, M. Degerlier, M. Krzysiek, M. Ciemala, M. D'Agostino, B. Wasilewska, Maurizio Bini, F. C. L. Crespi, G. Prete, V. L. Kravchuk, I. Mazumdar, B. Million, and B. Fornal

Subjects
Physics, Nuclear and High Energy Physics, Fusion, 010308 nuclear & particles physics, Evaporation, Inelastic collision, 01 natural sciences, Charged particle, medicine.anatomical_structure, 0103 physical sciences, medicine, Atomic physics, Nuclear Experiment, 010306 general physics, Spin (physics), Nucleus, Beam (structure), Excitation
Abstract

A study of fusion-evaporation and (partly) fusion-fission channels for the $^{88}$Mo compound nucleus, produced at different excitation energies in the reaction $^{48}$Ti + $^{40}$Ca at 300, 450 and 600 MeV beam energies, is presented. Fusion-evaporation and fusion-fission cross sections have been extracted and compared with the existing systematics. Experimental data concerning light charged particles have been compared with the prediction of the statistical model in its implementation in the Gemini++ code, well suited even for high spin systems, in order to tune the main model parameters in a mass region not abundantly covered by exclusive experimental data. Multiplicities for light charged particles emitted in fusion evaporation events are also presented. Some discrepancies with respect to the prediction of the statistical model have been found for forward emitted $\alpha$-particles; they may be due both to pre-equilibrium emission and to reaction channels (such as Deep Inelastic Collisions, QuasiFission/QuasiFusion) different from the compound nucleus formation.

Published
2016
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30. Measurements of high-energy -rays with detectors

Author

J. Gulyás, S. Lalkovski, A. Vitez, A. Krasznahorkay, M. Csatlós, R. Lozeva, M. Ciemala, M. Kmiecik, J.M. Daugas, D. L. Balabanski, A. Maj, A. Lefebvre-Schuhl, and Georgi P. Georgiev

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, High energy, Range (particle radiation), 010308 nuclear & particles physics, Detector, Resolution (electron density), Analytical chemistry, 7. Clean energy, 01 natural sciences, Proton resonance, Cascade, 0103 physical sciences, Calibration, 010306 general physics, Instrumentation
Abstract

The full-energy peak efficiency calibration and the energy resolution measurements of the 2 in . × 2 in . LaBr 3 γ -ray detector are presented for γ -ray energies in the 700 keV–17.6 MeV range. Measurements were done using a combination of proton-capture nuclear reactions on Al 27 , Na 23 , K 39 , Li 7 and B 11 for high-energy γ -rays, and radioactive sources such as Co 60 and Eu 152 for the lowest energies. At high energies, two γ -rays in a cascade from proton resonance capture were employed using Al, Na 2 WO 4 , K 2 SO 4 and LiBO 2 targets. The obtained results were compared to the simulations performed using a GEANT4 code.

Published
2009
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31. Isospin Mixing inZr80: From Finite to Zero Temperature

Author

S. Brambilla, S. Leoni, D. Bazzacco, P. Désesquelles, Stefano Riboldi, D. S. Judson, P. Reiter, O. Stezowski, G. Benzoni, Herbert Hess, R. Menegazzo, R. Avigo, F. C. L. Crespi, M. Ciemala, F. Camera, E. Farnea, M. Kmiecik, Andreas Görgen, G. Bocchi, J. J. Valiente-Dobón, F. Recchia, R. Nicolini, D. Montanari, P. A. Söderström, B. Birkenbach, J. Eberth, M. Zieblinski, V. Modamio, S. Myalski, Luna Pellegri, B. Million, A. Mentana, A. Jungclaus, S. Bottoni, C. A. Ur, W. Korten, D. R. Napoli, Ch. Theisen, N. Blasi, S. Ceruti, A. Bracco, A. Pullia, A. Giaz, A. Maj, A. Gottardo, O. Wieland, D. Mengoni, E. Sahin, M.D. Salsac, Begoña Quintana, D. Rosso, A. I. Morales, and C. Michelagnoli

Subjects
Physics, 010308 nuclear & particles physics, Nuclear Theory, Gamma ray, General Physics and Astronomy, Resonance, 7. Clean energy, 01 natural sciences, Nuclear physics, Dipole, Isospin, 0103 physical sciences, AGATA, Atomic physics, Nuclear Experiment, 010306 general physics, Mixing (physics), Excitation, Fermi Gamma-ray Space Telescope
Abstract

The isospin mixing was deduced in the compound nucleus Zr-80 at an excitation energy of E* = 54 MeV from the gamma decay of the giant dipole resonance. The reaction Ca-40 + Ca-40 at E-beam = 136 MeV was used to form the compound nucleus in the isospin I = 0 channel, while the reaction Cl-37 + Ca-44 at E-beam = 95 MeV was used as the reference reaction. The. rays were detected with the AGATA demonstrator array coupled with LaBr3:Ce detectors. The temperature dependence of the isospin mixing was obtained and the zero-temperature value deduced. The isospin-symmetry-breaking correction delta(C) used for the Fermi superallowed transitions was extracted and found to be consistent with beta-decay data.

Published
2015
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32. Giant dipole resonance built on hot rotating nuclei produced during evaporation of light particles from theMo88compound nucleus

Author

F. Gramegna, R. Nicolini, W. Meczynski, B. Szpak, Massimo Chiari, B. Fornal, M. Krzysiek, M. Ciemala, M. Zieblinski, Giovanni Casini, B. Wasilewska, Luca Morelli, M. Matejska-Minda, M. Cinausero, S. Brambilla, D. Montanari, M. Degerlier, A. Chbihi, Alessandra Corsi, Giorgio Baiocco, A. Nannini, S. Carboni, J. Dudek, J. Styczen, L. Bardelli, A. Giaz, Oliver J. Roberts, A. Maj, I. Mazumdar, Gabriele Pasquali, J.P. Wieleczko, N. Blasi, P. Bednarczyk, M. Kmiecik, S. Myalski, A. Bracco, F. C. L. Crespi, Sandro Barlini, N. Dinh Dang, O. Wieland, M. Bruno, F. Camera, G. Benzoni, M. D'Agostino, S. Leoni, Silvia Piantelli, Ch. Schmitt, V. L. Kravchuk, Maurizio Bini, Simone Valdré, T. Marchi, G. Prete, B. Million, and K. Mazurek

Subjects
Physics, Nuclear and High Energy Physics, education.field_of_study, Photon, 010308 nuclear & particles physics, Phonon, Drop (liquid), Nuclear Theory, Population, 01 natural sciences, Spectral line, Dipole, 0103 physical sciences, Thermal, Atomic physics, Nuclear Experiment, 010306 general physics, education, Excitation
Abstract

High-energy giant dipole resonance (GDR) γ rays were measured following the decay of the hot, rotating compound nucleus of 88Mo, produced at excitation energies of 124 and 261 MeV. The reaction 48Ti+ 40Ca at 300 and 600 MeV bombarding energies has been used. The data were analyzed using the statistical modelMonte Carlo code GEMINI++. It allowed extracting the giant dipole resonance parameters by fitting the high-energy γ -ray spectra. The extracted GDR widths were compared with the available data at lower excitation energy and with theoretical predictions based on (i) The Lublin-Strasbourg drop macroscopic model, supplemented with thermal shape fluctuations analysis, and (ii) The phonon damping model. The theoretical predictions were convolutedwith the population matrices of evaporated nuclei from the statistical model GEMINI++. Also a comparison with the results of a phenomenological expression based on the existing systematics, mainly for lower temperature data, is presented and discussed. A possible onset of a saturation of the GDR width was observed around T = 3 MeV.

Published
2015
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33. 1−and2+discrete states inZr90populated via the(O17,O′17γ)reaction

Author

R. Menegazzo, Luna Pellegri, G. de Angelis, C. A. Ur, V. Vandone, M. Krzysiek, R. Nicolini, C. Michelagnoli, A. Vitturi, D. Bazzacco, M. Ciemala, J. J. Valiente-Dobón, D. R. Napoli, P. Désesquelles, R.S. Kempley, Marco Bellato, B. Birkenbach, E. G. Lanza, S. Brambilla, Bo Cederwall, S. Leoni, P. Reiter, J. Jolie, M. Kmiecik, A. Gadea, A. Giaz, Andrea Corsi, Damiano Bortolato, F. Camera, O. Wieland, A. Gottardo, D. Mengoni, F. C. L. Crespi, Herbert Hess, A. Jungclaus, A. Maj, A. Bracco, M. Labiche, A. Pullia, E. Farnea, Ch. Theisen, Sunniva Siem, G. Benzoni, B. Million, A. Goergen, Begoña Quintana, F. Recchia, Roberto Isocrate, C. Boiano, J. Eberth, S. Bottoni, P. A Soederstroem, N. Blasi, P. Molini, Enrico Calore, E. Sahin, O. Stezowski, and P. Bednarczyk

Subjects
Physics, Elastic scattering, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Scattering, Isoscalar, Nuclear Theory, Gamma ray, High resolution, 01 natural sciences, 7. Clean energy, 0103 physical sciences, AGATA, Atomic physics, Born approximation, 010306 general physics, Excitation
Abstract

2(+) and 1(-) states in Zr-90 were populated via the (O-17, O-17 'gamma) reaction at 340 MeV. The gamma decay was measured with high resolution using the AGATA (advanced gamma tracking array demonstrator array). Differential cross sections were obtained at few different angles for the scattered particle. The results of the elastic scattering and inelastic excitation of 2(+), 3(,)(-) and 1(-) states are compared with distorted-wave Born approximation (DWBA) calculations, using both the standard collective form factor and a form factor obtained by folding microscopically calculated transition densities. This allowed to extract the isoscalar component of the 1(-) state at 6.424 MeV. The comparison of the present (17O, 17O 'gamma) data with existing (gamma,gamma') and (p, p') data in the corresponding region of the gamma continuum (6-11 MeV), characterized by a large E1 component, shows completely different behaviors of the cross section as a function of the nuclear excitation energy. The comparison of the data with DWBA calculations suggests a decrease of the isoscalar strength in the cross section with increasing excitation energy.

Published
2015
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34. Neutron-driven collectivity in light tin isotopes: Proton inelastic scattering from 104Sn

Author

Hiroyoshi Sakurai, A. Gillibert, E. C. Pollacco, A. Corsi, K. Matsui, Francois Lechaftois, Tadaaki Isobe, Sophie Péru, A. Jungclaus, D. Sohler, C. Santamaria, R. Taniuchi, Daiki Nishimura, Hidetada Baba, M. Ciemala, A. Obertelli, S. Boissinot, Pieter Doornenbal, Marc Dupuis, V. Lapoux, Masafumi Matsushita, Marco Martini, Nori Aoi, Tohru Motobayashi, Jongmin Lee, Shuichi Ota, Yoshiaki Shiga, Satoshi Takeuchi, Hua-Lei Wang, Piotr Bednarczyk, David Steppenbeck, Hungarian Scientific Research Fund, Ministerio de Ciencia e Innovación (España), European Research Council, European Commission, SCOAP, 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), 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), 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
Isolde, Nuclear and High Energy Physics, Inelastic scattering, Proton, Isoscalar, Collectivity, SHELL, Nuclear Theory, Neutron scattering, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Inelastic neutron scattering, Nuclear physics, Gamma spectroscopy, 0103 physical sciences, Isotopes of tin, EXCITATION, Neutron, 010306 general physics, Nuclear Experiment, Physics, SN, NUCLEI, 010308 nuclear & particles physics, lcsh:QC1-999, Physics and Astronomy, STATES, Atomic physics, Random phase approximation, lcsh:Physics
Abstract

5 pags.; 5 figs.; 1 tab.; Open Access funded by Creative Commons Atribution Licence 4.0, © 2015 The Authors. Inelastic scattering cross sections to individual bound excited states of 104Sn were measured at 150 MeV/u beam energy and analyzed to evaluate the contribution of neutron and proton collectivity. State-of-the-art Quasi-Particle Random Phase Approximation (QRPA) with the D1M Gogny interaction reproduces the experimental proton collectivity and our inelastic scattering cross sections once used as input for a reaction calculation together with the Jeukenne-Lejeune-Mahaux (JLM) potentials. Experimental inelastic scattering cross section decreases by 40(24)% from 112Sn to 104Sn. The present work shows that (i) proton and neutron collectivities are proportional over a large range of tin isotopes (including 104Sn), as is typical for isoscalar excitations, and (ii) the neutron collectivity dominates. It suggests that the plateau in the mass range A=106-112 displayed by E2 transition probabilities is driven by neutron collectivity., This work has been supported by the European Research Council through the ERC Starting Grant No. MINOS-258567 and by the ENSAR European FP7 Project No. 262010. A. Jungclaus acknowledges support from the Spanish Ministerio de Ciencia e Innovacion under Contracts No. FPA2009-13377-C02-02 and No. FPA2011-29854-C04-01. D. Sohler acknowledges travel support from Hungarian Scientific Research funds (Contracts No. K100835 and No. NN104543).

Published
2015
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35. Intermediate-energy Coulomb excitation ofSn104: ModerateE2strength decrease approachingSn100

Author

K. Matsui, Andrea Corsi, V. Lapoux, D. Sohler, Yoshiaki Shiga, L. Audirac, Satoshi Takeuchi, Tadaaki Isobe, Jongmin Lee, A. Jungclaus, Hidetada Baba, S. Boissinot, Shuichi Ota, Hiroyoshi Sakurai, T. Motobayashi, Takenori Furumoto, Nori Aoi, Ryo Taniuchi, E. C. Pollacco, Hua-Lei Wang, M. Ciemala, Masafumi Matsushita, Daiki Nishimura, A. Obertelli, C. Santamaria, P. Bednarczyk, David Steppenbeck, and P. Doornenbal

Subjects
Physics, Nuclear and High Energy Physics, Intermediate energy, 010308 nuclear & particles physics, 0103 physical sciences, SHELL model, Coulomb excitation, Atomic physics, 010306 general physics, 01 natural sciences
Abstract

P. Doornenbal, et al. ; 6 pags. ; 4 figs. ; 1 tab. ; PACS number(s): 21.60.Cs, 23.20.Js, 25.70.De, 27.60.+j

Published
2014
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36. Response of AGATA segmented HPGe detectors to gamma rays up to 15.1MeV

Author

S. Brambilla, D. R. Napoli, A. Gadea, F. Coniglio, D. Mengoni, Luna Pellegri, Enrico Calore, E. Sahin, S. Bottoni, M. Bellato, M. Kmiecik, C. A. Ur, Stefano Riboldi, D. Bazzacco, A. Corsi, N. Blasi, P. A. Söderström, D. Montanari, P. Casati, Damiano Bortolato, J. J. Valiente Dobon, V. Vandone, F. C. L. Crespi, F. Camera, R. Nicolini, B. Million, A. Maj, M. Ciemala, C. Michelagnoli, R. Avigo, Agnese Giaz, G. Benzoni, A. Bracco, Oliver Wieland, F. Recchia, E. Farnea, A. Atac, S. Leoni, Johan Nyberg, A. Gottardo, Serkan Akkoyun, [Crespi, F. C. L. -- Avigo, R. -- Camera, F. -- Bottoni, S. -- Bracco, A. -- Ceruti, S. -- Giaz, A. -- Leoni, S. -- Nicolini, R. -- Pellegri, L. -- Riboldi, S. -- Vandone, V.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy -- [Crespi, F. C. L. -- Avigo, R. -- Camera, F. -- Benzoni, G. -- Blasi, N. -- Bottoni, S. -- Bracco, A. -- Brambilla, S. -- Ceruti, S. -- Coelli, S. -- Giaz, A. -- Leoni, S. -- Million, B. -- Nicolini, R. -- Pellegri, L. -- Riboldi, S. -- Vandone, V. -- Wieland, O.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy -- [Akkoyun, S.] Cumhuriyet Univ, Dept Phys, Fac Sci, TR-58140 Sivas, Turkey -- [Atac, A.] Ankara Univ, Dept Phys, Fac Sci, TR-06100 Ankara, Turkey -- [Bazzacco, D. -- Bellato, M. -- Fanin, C. -- Farnea, E. -- Mengoni, D. -- Michelagnoli, C. -- Montanari, D. -- Recchia, F. -- Ur, C. A.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy -- [Bortolato, D. -- Gottardo, A. -- Valiente-Dobon, J. J.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, IT-35020 Legnaro, Italy -- [Bruyneel, B.] CEA Saclay, DSM IRFU SPhN, F-91191 Gif Sur Yvette, France -- [Ciemala, M. -- Kmiecik, M. -- Maj, A.] Polish Acad Sci, H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland -- [Eberth, J. -- Hess, H. -- Reiter, P. -- Wiens, A.] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany -- [Gadea, A.] CSIC Univ Valencia, IFIC, ES-46071 Valencia, Spain -- [Gottardo, A. -- Michelagnoli, C. -- Recchia, F.] Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy -- [Mengoni, D.] Univ W Scotland, Sch Engn, Paisley PA1 2BE, Renfrew, Scotland, Kmiecik, Maria -- 0000-0003-2019-2399, Gadea, Andres -- 0000-0002-4233-1970, Montanari, Daniele -- 0000-0002-1980-7686, Camera, Franco -- 0000-0003-1731-4834, Pellegri, Luna -- 0000-0002-3227-3332, Ciemala, Michal -- 0000-0001-5328-720X, GIAZ, Agnese -- 0000-0002-2550-450X, benzoni, giovanna -- 0000-0002-7938-0338, GOTTARDO, Andrea -- 0000-0002-0390-5767, Bottoni, Simone -- 0000-0003-2249-4825, and Recchia, Francesco -- 0000-0002-8428-0112

Subjects
AGATA, Gamma-ray spectroscopy, Gamma-ray tracking, HPGe detectors, Pulse-shape and gamma-ray tracking algorithms, Semiconductor detector performance and simulations, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Tracking (particle physics), 01 natural sciences, Nuclear physics, 0103 physical sciences, Gamma spectroscopy, ddc:530, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Instrumentation, Detectors de radiació, Physics, Spectrometer, 010308 nuclear & particles physics, Detector, Gamma ray, 81V35, Semiconductor detector, Física nuclear, Hpge detector
Abstract

WOS: 000314826000009, The response of AGATA segmented HPGe detectors to gamma rays in the energy range 2-15 MeV was measured. The 15.1 MeV gamma rays were produced using the reaction d(B-11,n gamma)C-12 at E-beam=19.1 MeV, while gamma rays between 2 and 9 MeV were produced using an Am-Be-Fe radioactive source. The energy resolution and linearity were studied and the energy-to-pulse-height conversion resulted to be linear within 0.05%.Experimental interaction multiplicity distributions are discussed and compared with the results of Geant4 simulations. It is shown that the application of gamma-ray tracking allows a suppression of background radiation caused by n-capture in Ge nuclei. Finally the Doppler correction for the 15.1 MeV gamma line, performed using the position information extracted with Pulse-shape analysis is discussed. (C) 2012 Elsevier B.V. All rights reserved., European Union [262010-ENSAR]; MINECO Spain [AIC-D-2011-0746, FPA2011-29854]; Generalitat Valenciana, Spain [PROME-TEO/2010/101]; German BMBF [06K-167, 06KY205I], This research has received funding from the European Union Seventh Framework Program FP7/2007-2013 under grant Agreement no. 262010-ENSAR. A.G. activity has been supported by the MINECO Spain, under grants AIC-D-2011-0746, FPA2011-29854 and by and Generalitat Valenciana, Spain, under grant PROME-TEO/2010/101. We acknowledge the support by the German BMBF under Grants 06K-167 and 06KY205I.

Published
2013
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37. Probing the 12C-12C and 12C-16O molecular states by radiative capture: present status and future

Author

M. D. Salsac, D. Lebhertz, D. G. Jenkins, S. Courtin, D. A. Hutcheon, M. Labiche, M. Ciemala, O. Stezowski, A. Goasduff, F. Haas, Oliver J. Roberts, A. Michalon, 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 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 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), 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, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, Radiative capture, General Physics and Astronomy, Coulomb barrier, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Cross section (physics), 0103 physical sciences, Cluster (physics), 010306 general physics, ComputingMilieux_MISCELLANEOUS, Spin-½
Abstract

Complete γ-decay in the 12 C (12 C ,γ)24 Mg and 12 C (16 O ,γ)28 Si reactions has been measured at energies close to the Coulomb Barrier using the DRAGON spectrometer and its associated BGO γ-array at the TRIUMF facility. The experimental data show an important feeding of doorway states around 10-11 MeV in both reactions. Comparisons with simulations allow to extract the full capture cross section and the main spin involved in the process. Different models are confronted to the results : completely statistical, semi-statistical with an unique entrance spin and cluster. The resolution of the BGO enables to eliminate a fully statistical scenario but is not enough to disentangle the two remaining scenarii. It is shown that the future PARIS array composed of the recently developed LaBr 3 scintillators will have capabilities to distinguish between these two scenarii.

Published
2010
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38. Testing of the PARIS LaBr3-NaI Phoswich Detector with High Energy Gamma-rays

Author

S. Mathimalar, Gyan P. Mishra, V. Nanal, Suresh Kumar, S. S. Mishra, M. Jastrząb, M. Nakhostin, N. Yavuzkanat, M. Kmiecik, M. Dudeło, V. P. Singh, R. G. Pillay, J. Lekki, M. Zieblinski, M. S. Pose, Z. Szklarz, P. Bednarczyk, E. M. Dutkiewicz, S. Brambilla, B. Wasilewska, O. Dorvaux, K. Hadynska-Klek, M. Krzysiek, Srirupa Mukhopadhyay, M. Ciemala, W. N. Catford, P. J. Napiorkowski, B. Genolini, N. Dokania, S. Erturk, Debasis Chakrabarty, N. Katyan, Ch. Schmitt, V. M. Datar, A. Maj, and Deepak Pandit

Subjects
Physics, Nuclear reaction, High energy, Proton, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Gamma ray, General Physics and Astronomy, Scintillator, 01 natural sciences, Signal, Nuclear physics, 0103 physical sciences, Phoswich detector, Nuclear Experiment, 010306 general physics
Abstract

We report on tests of LaBr3:Ce-NaI:Tl phoswich detectors with-rays at various γ-ray energies, up to 22.56 MeV, using radioactive sources and nuclear reactions induced by proton beams delivered by accelerators at IFJ PAN Krakow and PLF Mumbai. Two-dimensional analysis of complex waveforms recorded with digital electronics is compared to analog discrimination methods. Both approaches allow to resolve the LaBr3:Ce and NaI:Tl signal components, and to construct clean associated γ-ray spectra. A digital algorithm to be implemented for the PARIS scintillator array is investigated.

Published
2013
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39. Towards the Determination of Superdeformation in 42Ca

Author

M. Zielińska, A. Lopez-Martens, C. A. Ur, B. Birkenbach, B. Wasilewska, K. Hadynska-Klek, F. Camera, A. Korichi, J. J. Valiente-Dobón, M. Zieblinski, J. Eberth, M. Gulmini, A. Colombo, F. Recchia, P. Bednarczyk, A. Pullia, J. Grebosz, B. Fornal, M. D. Salsac, W. Korten, D. Mengoni, Andrea Corsi, D. M. Cullen, S. Leoni, F. C. L. Crespi, D. R. Napoli, K. Wrzosek-Lipska, J. Mierzejewski, N. Kondratyev, O. Stezowski, Agnese Giaz, G. de Angelis, R. Wadsworth, M. Krzysiek, A. Gottardo, L. Berti, J. Styczen, M. Ciemala, S. Brambilla, D. Karpiński, A. Obertelli, V. Vandone, Marco Bellato, J. Iwanicki, E. Farnea, Ch. Theisen, F. Azaiez, D. Bazzacco, T. Abraham, P. Désesquelles, X. Grave, S. Lunardi, T. Habermann, B.-Q. Arnés, M. Kmiecik, Damiano Bortolato, Megumi Niikura, B. Million, I. Stefan, M. Kisieliński, A. Jungclaus, G. Anil Kumar, S. Myalski, P. Reiter, Joël Chavas, Roberto Isocrate, E. Merchan, C. Michelagnoli, Andreas Wiens, J. Srebrny, M. Palacz, P. J. Napiorkowski, G. Lehaut, A. Czermak, K. Rusek, S. Franchoo, B. Bruyneel, P. J. Coleman-Smith, M. Kowalczyk, P. Molini, G. Maron, K. Mazurek, B. Dulny, M. Komorowska, G. Jaworski, N. Karkour, R. Menegazzo, G. Benzoni, W. Meczynski, N. Redon, N. Toniolo, G. Rampazzo, A. Gadea, P. Cocconi, R. Nicolini, M. Kicińska-Habior, P. A. Söderström, S. F. Özmen, A. Maj, D. Rosso, and E. Sahin

Subjects
Physics, Focus (computing), 010308 nuclear & particles physics, Nuclear Theory, General Physics and Astronomy, Coulomb excitation, 01 natural sciences, Nuclear physics, Superdeformation, medicine.anatomical_structure, 0103 physical sciences, medicine, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleus
Abstract

The Coulomb excitation experiment to study electromagnetic structure of low-lying states in Ca-42 with a focus on a possible superdeformation in this nucleus was performed at the Laboratori Naziona ...

Published
2013
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40. [Untitled]

Author

S. M. Lenzi, M. Zieblinski, R. Nicolini, W. Korten, J. Grebosz, O. Stezowski, J. J. Valiente-Dobón, P. J. Napiorkowski, J. Styczen, B. Bruyneel, Piotr Bednarczyk, P. Reiter, D. Bazzacco, P. Molini, S. Franchoo, F. Camera, X. Grave, S. Lunardi, P. Cocconi, E. Merchan, C. Michelagnoli, M. Kmiecik, E. Sahin, M. Bellato, F. Recchia, Andreas Wiens, G. Anil Kumar, K. Wrzosek-Lipska, G. Lehaut, W. Meczynski, D. R. Napoli, G. Rampazzo, B. Wadsworth, H. Hess, J. Srebrny, G. Benzoni, A. Czermak, N. Redon, M. Palacz, Agnese Giaz, B. Fornal, Andrea Corsi, F. Azaiez, V. Vandone, D. Mengoni, R. Menegazzo, Damiano Bortolato, D. Rosso, A. Gadea, G. de Angelis, N. Toniolo, M. Kicińska-Habior, A. Korichi, M. Gulmini, A. Colombo, M. Ciemala, M. Zielińska, A. Maj, A. Gottardo, L. Berti, C. A. Ur, K. Hadynska-Klek, E. Farnea, Roberto Isocrate, Megumi Niikura, I. Stefan, N. Kondratyev, S. Leoni, G. Maron, B. Dulny, G. Jaworski, and F. C. L. Crespi

Subjects
Physics, Spectrometer, 010308 nuclear & particles physics, General Physics and Astronomy, Coulomb excitation, 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, AGATA, Detector array, Nuclear Experiment, 010306 general physics, Focus (optics)
Abstract

The Coulomb excitation experiment to study electromagnetic properties of low-lying states in 42Ca with a focus on a presumably superdeformed band was performed at the Laboratori Nazionali di Legnaro in Italy using the \gamma -ray spectrometer AGATA Demonstrator coupled to the DANTE charged particle detector array. First results are presented, including the refinement of the 42Ca level scheme.

Published
2011
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