论文部分内容阅读
宇称伙伴带在奇A核转动谱中的出现体现了原子核具有内禀反射不对称性。为研究其内在的物理,利用反射不对称壳模型(RASM)计算了中子数为145的同位素237U和239Pu的高自旋宇称伙伴带。在RASM的理论框架中,引入的八极形变破坏了原子核的转动和空间反射对称性。在此基础上得到变形BCS基,之后,通过角动量投影和宇称投影获得有确定宇称和角动量的RASM试探波函数。
The appearance of the parity partner band in the odd A nuclear rotation spectrum shows that the nucleus has intrinsic reflection asymmetry. In order to study its intrinsic physics, the highly spin-parity partner bands of isotopes 237U and 239Pu with a neutron number of 145 were calculated using a reflection-asymmetric shell model (RASM). In the theoretical framework of RASM, the octopole deformation introduced destroys the rotation and the symmetry of the space reflection. On this basis, the deformed BCS is obtained. Then, the RASM wave function with definite parity and angular momentum is obtained by angular momentum projection and parity projection.