Deformation and alpha clustering in excited states of Ca-42

作者：Taniguchi Yasutaka^*

来源：Progress of Theoretical and Experimental Physics, 2014, 2014(7): 073D01.

DOI：10.1093/ptep/ptu086

The coexistence of various low-lying deformed states in Ca-42 and the alpha-Ar-38 correlations in those deformed states have been investigated using deformed-basis antisymmetrized molecular dynamics. Wave functions of the low-lying states are obtained via parity and angular momentum projections and the generator coordinate method (GCM). Basis wave functions of the GCM calculation are obtained via energy variations with constraints on the quadrupole deformation parameter beta and the distance between a and the Ar-38 clusters. The rotational bands built on the J(pi) = 0(2)(+) (1.84MeV) state as well as the J(pi) = 0(3)(+) (3.30MeV) state are both reproduced. The coexistence of two additional K-pi = 0(+) rotational bands is predicted; one band is shown to be built on the J(pi) = 0(3)(+) state. Members of the ground-state band and the rotational band built on the v = 0(3)(+) state contain alpha-Ar-38 cluster structure components.

• 出版日期2014-7
• 单位河北医科大学; RIKEN