Microscopic Core Polarization Effects and Application to E2 Transitions in Even Carbon Isotopes  

作　　者：MA Hai-liang, DONG Bao-guo, YAN Yu-liang 

出　　处：《Annual Report of China Institute of Atomic Energy》2010年第1期83-83,共1页中国原子能科学研究院年报（英文版）

摘　　要：In neutron rich even carbon isotopes, a large quenching of the electric quadrupole (E2) transitions between 2+1 states and ground states has reported, while in the proton rich side, the enhanced E2 transitions are observed. Besides the E2 abnormality in these isotopes, the neutron transitionIn neutron rich even carbon isotopes, a large quenching of the electric quadrupole （E2） transitions between 2＋1 states and ground states has reported, while in the proton rich side, the enhanced E2 transitions are observed. Besides the E2 abnormality in these isotopes, the neutron transition matrix elements, which were obtained from hadron scattering, have been found largely enhanced comparing with the standard shell model predictions. The microscopic core polarization effects studied by the microscopic particle-vibration model are used to calculate the E2 transition matrix elements in carbon isotopes. The experimental data are better reproduced with microscopic polarization effects comparing with standard shell model calculations.

关 键 词：E2跃迁 微观粒子 极化效应 碳同位素 应用 转移矩阵 同位素异常 振动模型 

分 类 号：O571.21[理学—粒子物理与原子核物理] O413.1[理学—物理]