非轴对称转子的IBM-2描述

NONAXISYMMETRIC ROTOR AND IBM-2 DESCRIPTION

从IBM-2体系出发,通过内禀系中的自洽推转计算确定了一个与之等价的非轴对称转子的质量及形变参数。把结果与唯象几何模型相比较,可探讨描述变形核低能激发态的两类唯象模型间的联系。

For a system described by a Hamiltonian of the interacting boson model Ⅱ, the moment of inertia is estimated in terms of the self-consistent Cranking calculation in the intrinsic coordinate frame, furthermore, the mass and deformation parameters of a nonaxisymmetrie rotor, which is equivalent to the original IBM system, are also given. By comparing these calculated parameters with those given by the geometry model in the phenomenological study. One can investigate the relationship between the IBM and the geometry model in describing the low-lying excited states for deformed nuclei.