Systematic investigation of El strength for the isotopes from Z = 28 to 50

International Symposium on Exotic Nuclear Structure From Nucleons 2012

Ebata, Shuichiro^1,2 ; Nakatsukasa, Takashi^2,3 ; Inakura, Tsunenori^2

Center for Nuclear Study, University of Tokyo, Wako-shi 351-0198, Japan^1

RIKEN Nishina Center, Wako-shi 351-0198, Japan^2

Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8571, Japan^3

关键词: Canonical basis;    Nuclear dynamics;    Pairing correlations;    Polarizabilities;    Pygmy dipole resonances;    Systematic study;    Time-dependent hartree-fock;    Time-dependent mean-field;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/445/1/012021/pdf
DOI  :  10.1088/1742-6596/445/1/012021

来源: IOP

【 摘 要 】

We carry out a systematic study of electric dipole mode (E1) for neutron-rich isotopes from nickel (Z=28) to tin (Z=50) using a time-dependent mean-field theory. Our time-dependent scheme is the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory which can self-consistently describe nuclear dynamics with pairing correlation. We focus our discussion on the pygmy dipole resonance (PDR) and E1 polarizability (αD). The correlation between neutron-skin thickness and PDR strongly depends on the neutron number, but the correlation between the skin thickness and αDis much more stable.