Possible candidate nuclei for chirality-parity quartet bands

CHINESE PHYSICS C(2018)

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摘要
potential energy surfaces of the even-even (68-92)se Ba112-150, and Ra208-230 isotopes are calculated using the macroscopic-microscopic method in a multidimensional space {alpha(lambda,mu)} including quadrupole (lambda=2, mu=0,2) and octupole (lambda=3, mu=0,1,2,3) degrees of freedom. The calculated results show that the even-even isotopes Se-92, Ba-112,Ba-114,Ba-144-150 and Ra220-228 can exhibit the coexistence of triaxial and octupole deformations, thereby leading to simultaneous chiral and reflected symmetry breaking. Therefore, chirality-parity quartet bands are expected in these and their neighboring odd-A/odd-odd nuclei.
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关键词
chiral doublet bands,shape coexistence,chirality-parity quartet bands,macroscopic-microscopic method
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