Isomer spectroscopy of 127Cd
2010; American Physical Society; Volume: 82; Issue: 3 Linguagem: Inglês
ISSN
2470-0002
AutoresF. Naqvi, M. Górska, L. Cáceres, A. Jungclaus, M. Pfützner, H. Grawe, F. Nowacki, K. Sieja, S. Piétri, E. Werner-Malento, P. H. Regan, D. Rudolf, Z Podolyák, J. Jolie, K. Andgren, T. Beck, P. Bednarczyk, J. Benlliure, G. Benzoni, A. M. Bruce, E. Casarejos, B. Cederwall, F. C. L. Crespi, P. Detistov, Zs. Dombrádi, P. Doornenbal, H. Geißel, J. Gerl, J. Grȩbosz, B. Hadinia, M. Hellström, R. Hoischen, G. Ilie, A. Khaplanov, I. Kojouharov, M. Kmiecik, N. Kurz, S. Lalkovski, A. Maj, Satria-Jaya Mandala, V. Modamio, F. Montes, S. Myalski, W. Prokopowicz, P. Reiter, H. Schaffner, G. S. Simpson, D. Sohler, S. J. Steer, S. Tashenov, J. Douglas Walker, O. Wieland, H. J. Wollersheim,
Tópico(s)Particle accelerators and beam dynamics
ResumoThe spin and configurational structure of excited states of 127 Cd, the two-proton and three-neutron hole neighbor of 132 Sn, has been studied. An isomeric state with a half-life of 17.5(3) μs was populated in the fragmentation of a 136 Xe beam on a 9 Be target at a beam energy of 750 MeV/u. Time distributions of the delayed γ transitions and γγ coincidence relations were exploited to construct a decay scheme. The observed yrast (19/2) + isomer is proposed to have dominant configurations of ν(h ―3 11/2 )π(g ―1 9/2 , p ―1 1/2 ), ν(h ―2 11/2 d ―1 3/2 )π(g ―2 9/2 ), and ν(h ―2 11/2 , s ―1 1/2 )π(g ―2 9/2 ) and to decay by two competing stretched M2 and E3 transitions. Experimental results are compared with the isotone 129 Sn. The new information provides input for the proton-neutron interaction and the evolution of neutron hole energies in nuclei around the doubly magic 132 Sn core.
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