Relativistic Quasiparticle Random Phase Approximation With a Separable Pairing Force  

作　　者：TIAN Yuan MA Zhong-yu Peter Ring 

机构地区：[1]不详 [2]Physik Department, Technische Universitat Mtlnchen

出　　处：《Annual Report of China Institute of Atomic Energy》2007年第1期85-85,共1页中国原子能科学研究院年报（英文版）

基　　金：National Natural Science Foundation of China (10475116, 10535010);Major State Basic Research Development Program in China (2007CB815000);European Community Project Asia-Europe Link in Nuclear Physics and Astrophysics, CN/ASIA-LINK/008(94791)

摘　　要：A new pairing force has been derived from Gogny effective interaction in nuclear matter. And in the ground states of the spherical nuclei, this pairing force has a simple separable form. It can beA new pairing force has been derived from Gogny effective interaction in nuclear matter. And in the ground states of the spherical nuclei, this pairing force has a simple separable form. It can be easily applied in the calculation of finite nuclei, and gives almost the same pairing properties as the Gogny force. In this paper, we will investigate this new pairing force in the vibration excited states in the Relativistic Quasiparticle Random Phase Approximation （RQRPA）. As seen from the figure, we calculate E2 （Fig. la） and B（E2） （Fig. 2） values of Sn isotopes. The dots represent the experiment data, the diamond points are the results with Gogny pairing interaction, and the star points correspond to the results of our new separable force. Therefore, this simple separable pairing force can well depict the pairing properties not only in the ground states of spherical nuclei, but also the vibration excited states. And it will be applied in the calculation of deformed nuclei in the future.

关 键 词：核物理学 准粒子随机相位近似 可分配对力 原子能 

分 类 号：O571[理学—粒子物理与原子核物理]