Yrast spectroscopy of 60128Nd68 and systematics of the νh11/2 crossing in A∼130 nuclei

O. Zeidan, D. J. Hartley, L. L. Riedinger, W. Reviol, W. D. Weintraub, Y. Sun, Jing Ye Zhang, A. Galindo-Uribarri, S. D. Paul, D. G. Sarantites, M. Devlin, M. P. Carpenter, R. V.F. Janssens, D. Seweryniak

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Abstract

High-spin states in 128Ca were populated with the 92Mo (40Ca, 2p2n) reaction at a beam energy of 184 MeV. The previously known ground-state band has been extended to Iπ=(34+) and four sidebands were observed. Configuration assignments for these sidebands are discussed based on their alignment behavior. A significant delay of the νh11/2 crossing frequency is observed in the A∼130 region, with the largest delays occurring consistently at N=70. Cranked shell model calculations were performed in order to investigate whether a variation of deformation and/or pairing parameters can account for this phenomenon.

Original languageEnglish
Article number044311
Pages (from-to)443111-443119
Number of pages9
JournalPhysical Review C - Nuclear Physics
Volume66
Issue number4
DOIs
StatePublished - Oct 1 2002

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