Study of nuclei around Z = 28 by large-scale shell model calculations

International Symposium on Exotic Nuclear Structure From Nucleons 2012

Tsunoda, Y.^1 ; Otsuka, T.^1,2,3 ; Shimizu, N.^2 ; Honma, M.^4 ; Utsuno, Y.^5

Department of Physics, University of Tokyo, Tokyo 113-0033, Japan^1

Center for Nuclear Study, University of Tokyo, Tokyo 113-0033, Japan^2

National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI, United States^3

Center for Mathematical Sciences, University of Aizu, Ikki-machi, Aizu-Wakamatsu, Fukushima 965-8580, Japan^4

Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan^5

关键词: Intrinsic shape;    Large models;    Level schemes;    Linear combinations;    Nuclei around;    Shape coexistence;    Shell models;    Slater determinants;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/445/1/012028/pdf
DOI  :  10.1088/1742-6596/445/1/012028

来源: IOP

【 摘 要 】

We study Cr and Ni isotopes by Monte Carlo shell model (MCSM) calculations in a pfg9d5shell. In the MCSM, the wave function is represented as a linear combination of angular-momentum- and parity-projected deformed Slater determinants (MCSM bases), and we can calculate eigenstates in a large model space such as the pfg9d5shell. We study the intrinsic shape of nuclei by using deformations of the unprojected MCSM bases. We show calculated results of Cr and Ni isotopes and a level scheme of68Ni, and discuss the strength of the magicity of N = 40 in Cr and Ni isotopes and shape coexistence in68Ni.