Quadrupole and octupole softness in the N = Z nucleus 64 Ge
2002; American Institute of Physics; Volume: 66; Issue: 5 Linguagem: Inglês
10.1103/physrevc.66.051306
ISSN1538-4497
AutoresKazunari Kaneko, Munetake Hasegawa, T. Mizusaki,
Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoQuadrupole and octupole softness in the even-even $N=Z$ nucleus ${}^{64}\mathrm{Ge}$ is studied on the spherical shell model basis. We carry out the shell model calculation using the pairing plus quadrupole $(\mathrm{QQ})$ plus octupole $(\mathrm{OO})$ interaction with monopole corrections. It is shown that ${}^{64}\mathrm{Ge}$ is an unstable nucleus with respect to both the quadrupole and octupole deformations, which is consistent with the previous discussions predicting the $\ensuremath{\gamma}$ softness and octupole instability. It is demonstrated that the proton-neutron part ${Q}_{p}{Q}_{n}$ of the $\mathrm{QQ}$ interaction is important for the $\ensuremath{\gamma}$ softness or triaxiality.
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