摘要
本文系统地分析了量子群SU_q(2)理论对原子核转动谱的适用性。通过对Mallmann图、I(I+1)展开系数的关系、以及能谱的计算表明:SU_q(2)的转动谱表示式与锕系和稀土偶偶交形核的观测到的转动谱规律有明显的偏离。SU_q(2)转动谱表示式只在一定角动量范围中适用。形变参量q与核软度直接相关,明显依赖于角动量。
The validity of the quantum group SU_q(2) expression for the nuclear rotational spectrum is investigatied thoroughly. Analyses (including the Mallmann plots, the relations for the I(I+1) expansion coefficients, energy spectra, etc.) definitely display a systematical deviation of the SU_q(2) prediction from the experimental data available for the even--even rare--earth and actinide nuclei. Only within a lindted range of angular momentum the SU_q(2) expression is suitable for rotational spectra. A significant angular momentum dependence of q--deformation parameter is found. The q-deformation is directly related to the nuclear softness.
出处
《高能物理与核物理》
CSCD
北大核心
1992年第1期90-96,共7页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
国家教委博士点基金支持项目
