论文标题
壳模型的八杆旋风集体研究接近208pb
Shell-model study of octupole collectivity near 208Pb
论文作者
论文摘要
我们表明，在偶然的魔术核中，低洼八个状态的粒子孔波函数的集体波函数主要是由于中子 - 普罗顿相互作用。增强的降低了向基态的过渡概率B（E3; 3-_1-> 0+_1），以及八极激发与核子的偶联是由于集体状态的所有组成部分的连贯作用而产生的。在208pb和209pb的逼真的壳模型相互作用中获得的结果与Bohr和Mottelson的几何集体模型一致，在该模型中，Octupole激发与对应于核表面的集体形状振荡的声子相关。
We show that the collectivity of the particle-hole wave function of low-lying octupole 3^- states in doubly magic nuclei is mainly due to the neutron-proton interaction. Both the enhanced reduced transition probability to the ground state, B(E3;3-_1 -> 0+_1), and the coupling of the octupole excitation to a nucleon result from the coherent action of all the components of the collective state. The results obtained with a realistic shell-model interaction both for 208Pb and 209Pb agree with the geometric collective model of Bohr and Mottelson, where octupole excitations are associated with phonons corresponding to collective shape oscillations of the surface of the nucleus.
