Data di Pubblicazione:
2007
Citazione:
Observation of isomeric decays in the r-process waiting-point nucleus 130Cd82 / A. Jungclaus, L. Caceres, M. Gorska, M. Pfutzner, S. Pietri, E. Werner Malento, H. Grawe, K. Langanke, G. Martinez Pinedo, F. Nowacki, A. Poves, J.J. Cuenca-Garcia, D. Rudolph, Z. Podolyak, P. H. Regan, P. Detistov, S. Lalkovski, V. Modamio, J. Walker, P. Bednarczyk, P. Doornenbal, H. Geissel, J. Gerl, J. Grebosz, I. Kojouharov, N. Kurz, W. Prokopowicz, H. Schaffner, H.J. Wollersheim, K. Andgren, J. Benlliure, G. Benzoni, A.M. Bruce, E. Casarejos, B. Cederwall, F.C.L. Crespi, B. Hadinia, M. Hellstr?m, R. Hoischen, G. Ilie, J. Jolie, A. Khaplanov, M. Kmiecik, R. Kumar, A. Maj, S. Mandal, F. Montes, S. Myalski, G.S. Simpson, S. J. Steer, S. Tashenov, O. Wieland. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 99:13(2007), pp. 132501.132501.1-132501.132501.5. [10.1103/PhysRevLett.99.132501]
Abstract:
The gamma decay of excited states in the waiting-point nucleus 130Cd82 has been observed for the first time. An 8+ two-quasiparticle isomer has been populated both in the fragmentation of a 136Xe beam as well as in projectile fission of 238U, making 130Cd the most neutron-rich N=82 isotone for which information about excited states is available. The results, interpreted using state-of-the-art nuclear shell-model calculations, show no evidence of an N=82 shell quenching at Z=48. They allow us to follow nuclear isomerism throughout a full major neutron shell from 98Cd50 to 130Cd82 and reveal, in comparison with 76Ni48 one major proton shell below, an apparently abnormal scaling of nuclear two-body interactions.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Excited states ; nuclear energy level transitions ; nuclear fragmentation ; nuclear isomerism ; nuclear shell model ; nuclei with mass number 90 to 149
Elenco autori:
A. Jungclaus, L. Caceres, M. Gorska, M. Pfutzner, S. Pietri, E. Werner Malento, H. Grawe, K. Langanke, G. Martinez Pinedo, F. Nowacki, A. Poves, J.J. Cuenca Garcia, D. Rudolph, Z. Podolyak, P.H. Regan, P. Detistov, S. Lalkovski, V. Modamio, J. Walker, P. Bednarczyk, P. Doornenbal, H. Geissel, J. Gerl, J. Grebosz, I. Kojouharov, N. Kurz, W. Prokopowicz, H. Schaffner, H.J. Wollersheim, K. Andgren, J. Benlliure, G. Benzoni, A.M. Bruce, E. Casarejos, B. Cederwall, F.C.L. Crespi, B. Hadinia, M. Hellstr?m, R. Hoischen, G. Ilie, J. Jolie, A. Khaplanov, M. Kmiecik, R. Kumar, A. Maj, S. Mandal, F. Montes, S. Myalski, G.S. Simpson, S.J. Steer, S. Tashenov, O. Wieland
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