Structure of upper-g(9/2)-shell nuclei and shape effect in the Ag-94 isomeric states
Data(s) |
2008
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Resumo |
Using a shell model which is capable of describing the spectra of upper g(9/2)-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 Ag-94. 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. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Kaneko, K (Kaneko, K.); Sun, Y (Sun, Y.); Hasegawa, M (Hasegawa, M.); Mizusaki, T (Mizusaki, T.) . Structure of upper-g(9/2)-shell nuclei and shape effect in the Ag-94 isomeric states, PHYSICAL REVIEW C,2008,77(6):064304 |
Palavras-Chave | #SHELL-MODEL CALCULATIONS #HIGH-SPIN ISOMERS #RP-PROCESS #2-PROTON RADIOACTIVITY #PROTON #SN-100 #DECAY #LINE |
Tipo |
期刊论文 |