Phys. Rev. C 77, 064304 (2008) [10 pages]Structure of upper-g9/2-shell nuclei and shape effect in the 94Ag isomeric statesSee Also: Erratum Received 18 January 2008; published 4 June 2008 Using a shell model which is capable of describing the spectra of upper g9/2-shell nuclei close to the N=Z line, we study the structure of two isomeric states 7+ and 21+ in the odd-odd N=Z nucleus 94Ag. It is found that both isomeric states exhibit a large collectivity. The 7+ state is oblately deformed, and is suggested to be a shape isomer in nature. The 21+ state becomes isomeric because of level inversion of the 19+ and 21+ states due to core excitations across the N=Z=50 shell gap. Calculation of spectroscopic quadrupole moment indicates clearly an enhancement in these states due to the core excitations. However, the present shell model calculation that produces the 19+-21+ level inversion cannot accept the large-deformation picture of Mukha et al. [Nature (London) 439, 298 (2006)]. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.77.064304
DOI:
10.1103/PhysRevC.77.064304
PACS:
21.10.Dr, 21.60.Cs, 21.10.Re, 27.60.+j
See AlsoErratum: K. Kaneko, Y. Sun, M. Hasegawa, and T. Mizusaki, Erratum: Structure of upper-g9/2-shell nuclei and shape effect in the 94Ag isomeric states [Phys. Rev. C 77, 064304 (2008)], Phys. Rev. C 78, 049903 (2008). |
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.