偶偶Ge和Se同位素核的形变HF态及负宇称带研究

将具有负宇称的fp轨道空间扩大到包含具有正宇称的1g_9/2轨道,采用修正的表面δ相互作用,对⁶⁴Ge,⁶⁶Ge,⁶⁸Ge,⁷⁰Se,⁷²Se和⁷⁴Se等6个偶偶核做了形变HF计算.得到了基态和一些激发态的解.同时,还用近似角动量投影形变Hartree-Fock(PDHF)方法,对⁶⁴Ge和⁷⁴Se进行了能谱计算,得到其正、负宇称带的解,计算结果与实验谱基本一致.

Studies on the HF States and the Negative Parity Bands of Even Even Ge and Se Nuclei

Using modified surface delta interaction and enlarging the fp configuration space to include the 1 g 9/2 states with the positive parity, the deformed Hartree Fock calculations for the six nuclei: 64 Ge, 66 Ge, 68 Ge, 70 Se, 72 Se and 74 Se are performed. The ground state and some particle hole excited configurations are obtained. The approximate angular momentum projected Hartree Fock (PDHF) method is applied to nuclei 64 Ge and 74 Se. Both of their positive and negative parity bands are obtained. The calculated energy spectra are consistent with experimental spectra well.