摘要
利用推广的粒子-转子模型研究了稀土区奇A核的M1和E2跃迁的性质,指出核心的十六极形变、转动哈密顿量中的二级科里奥利作用对M1(△I=1)和E2跃迁几率的Signature依赖性以及对Signature的平均值有着不容忽略的影响.对^(157)Ho的计算得到了能谱的Signature分离、B(M1;△I=1)值和[B(E2;△I=1)/B(E2;△I=2)]^(1/2)比值都同实验定性相符的结果.
The properties of M1 and M2 transitions in odd-Λ rare-earth nuclei are investigated by means of the extended particle-rotor model. It shows that the effects of hexadecapole'def ormation of the core and the second-order coriolis interaction in the rotational hamiltonian on the signature-dependence and the values averaged over the signature a=±1/2 of, M1 and E2 transition rates in odd-A nuclei can not be neglected.
出处
《高能物理与核物理》
CSCD
北大核心
1989年第3期269-277,共9页
High Energy Physics and Nuclear Physics
