Kr-96(36)60-Low-Z Boundary of the Island of Deformation at N=60
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Kr-96(36)60-Low-Z Boundary of the Island of Deformation at N=60

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Kr-96(36)60-Low-Z Boundary of the Island of Deformation at N=60

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dc.contributor.author Dudouet, J.
dc.contributor.author Lemasson, A.
dc.contributor.author Duchêne, G.
dc.contributor.author Rejmund, M.
dc.contributor.author Clément, E.
dc.contributor.author Michelagnoli, C.
dc.contributor.author Didierjean, F.
dc.contributor.author Korichi, A.
dc.contributor.author Sanchis Peris, Enrique
dc.contributor.author González Millán, Vicente
dc.contributor.author Domingo Pardo, César
dc.contributor.author Pérez-Vidal, R. M.
dc.contributor.author Collado, J.
dc.contributor.author De Angelis, G.
dc.contributor.author Astier, A.
dc.contributor.author Delafosse, C.
dc.contributor.author Deloncle, I.
dc.contributor.author Dombradi, Z.
dc.contributor.author de France, G.
dc.contributor.author Gadea Raga, Andrés
dc.contributor.author Gottardo, A.
dc.contributor.author Jacquot, B.
dc.contributor.author Menegazzo, R.
dc.contributor.author Konstantinopoulos, T.
dc.contributor.author Valiente Dobón, J. J.
dc.contributor.author Recchia, F.
dc.contributor.author Lenzi, S. M.
dc.contributor.author Barrientos, D.
dc.contributor.author Lozeva, R.
dc.contributor.author Million, B.
dc.contributor.author Napoli, D. R.
dc.contributor.author Navin, A.
dc.contributor.author Petrache, C. M.
dc.contributor.author Pietralla, N.
dc.contributor.author Ralet, D.
dc.contributor.author Ramdhane, M.
dc.contributor.author Redon, N.
dc.contributor.author Schmitt, C.
dc.contributor.author Sohler, D.
dc.contributor.author Verney, D.
dc.date.accessioned 2018-04-25T14:32:24Z
dc.date.available 2018-04-25T14:32:24Z
dc.date.issued 2017
dc.identifier.uri http://hdl.handle.net/10550/65855
dc.description.abstract Prompt.-ray spectroscopy of the neutron-rich Kr-96, produced in transfer-and fusion-induced fission reactions, has been performed using the combination of the Advanced Gamma Tracking Array and the VAMOS + +spectrometer. A second excited state, assigned to J pi = 4(+), is observed for the first time, and a previously reported level energy of the first 2+ excited state is confirmed. The measured energy ratio R-4/2 = E(4(+))/E(2(+)) = 2.12(1) indicates that this nucleus does not show a well-developed collectivity contrary to that seen in heavier N = 60 isotones. This new measurement highlights an abrupt transition of the degree of collectivity as a function of the proton number at Z = 36, of similar amplitude to that observed at N = 60 at higher Z values. A possible reason for this abrupt transition could be related to the insufficient proton excitations in the g(9/2), d(5/2), and s(1/2) orbitals to generate strong quadrupole correlations or to the coexistence of competing different shapes. An unexpected continuous decrease of R-4/2 as a function of the neutron number up to N = 60 is also evidenced. This measurement establishes the Kr isotopic chain as the low-Z boundary of the island of deformation for N = 60 isotones. A comparison with available theoretical predictions using different beyond mean-field approaches shows that these models fail to reproduce the abrupt transitions at N = 60 and Z = 36.
dc.language.iso eng
dc.relation.ispartof Physical Review Letters, 2017, vol. 118, num. 16, p. 162501 - 1pp-162501 - 6pp
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Dudouet, J. Lemasson, A. Duchêne, G. Rejmund, M. Clément, E. Michelagnoli, C. Didierjean, F. Korichi, A. Sanchis Peris, Enrique González Millán, Vicente Domingo Pardo, César Pérez-Vidal, R. M. Collado, J. De Angelis, G. Astier, A. Delafosse, C. Deloncle, I. Dombradi, Z. de France, G. Gadea Raga, Andrés Gottardo, A. Jacquot, B. Menegazzo, R. Konstantinopoulos, T. Valiente Dobón, J. J. Recchia, F. Lenzi, S. M. Barrientos, D. Lozeva, R. Million, B. Napoli, D. R. Navin, A. Petrache, C. M. Pietralla, N. Ralet, D. Ramdhane, M. Redon, N. Schmitt, C. Sohler, D. Verney, D. 2017 Kr-96(36)60-Low-Z Boundary of the Island of Deformation at N=60 Physical Review Letters 118 16 162501 - 1pp 162501 - 6pp
dc.subject Espectroscòpia de ressonància magnètica nuclear
dc.subject Física nuclear
dc.title Kr-96(36)60-Low-Z Boundary of the Island of Deformation at N=60
dc.type info:eu-repo/semantics/article
dc.date.updated 2018-04-25T14:32:25Z
dc.identifier.doi https://doi.org/10.1103/PhysRevLett.118.162501
dc.identifier.idgrec 120320

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