Possible candidate nuclei for chirality-parity quartet bands  

作　　者：Chen Liu Shou-Yu Wang Bin Qi Hui Jia 刘晨;王守宇;亓斌;贾慧(Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment,Institute of Space Sciences,Shandong University)

机构地区：Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai 264209, China

出　　处：《Chinese Physics C》2018年第7期82-88,共7页中国物理C（英文版）

基　　金：Supported by Natural Science Foundation of China(11705102,11622540,11675094);the Shandong Natural Science Foundation(ZR2017PA005,JQ201701);the China Postdoctoral Science Foundation(2017M612254);the Young Scholars Program of Shandong University,Weihai(2015WHWLJH01)

摘　　要：The potential energy surfaces of the even-even 68-92Se, 112-150Ba, and 208-230Ra isotopes are calculated using the macroscopic-microscopic method in a multidimensional space {αλ,μ} including quadrupole （λ=2, μ=0, 2） and octupole （λ=3, μ=0, 1, 2, 3） degrees of freedom. The calculated results show that the even-even isotopes 92Se, 112,114,144-150Ba and 220-228Ra 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.The potential energy surfaces of the even-even 68-92Se, 112-150Ba, and 208-230Ra isotopes are calculated using the macroscopic-microscopic method in a multidimensional space {αλ,μ} including quadrupole （λ=2, μ=0, 2） and octupole （λ=3, μ=0, 1, 2, 3） degrees of freedom. The calculated results show that the even-even isotopes 92Se, 112,114,144-150Ba and 220-228Ra 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.

关 键 词：chiral doublet bands shape coexistence chirality-parity quartet bands macroscopic-microscopic method 

分 类 号：O571[理学—粒子物理与原子核物理]