稀土区奇质子Lu和Ta核旋称反转研究

[1]北京师范大学射线束技术与材料改性教育部重点实验室,北京100875 [2]中国原子能科学研究院,北京102413[3]山西大学物理电子工程学院,山西太原030006[4]北京师范大学低能核物理研究所,北京100875[5]北京市辐射中心,北京100875

Study on Signature Inversion of Odd-proton Nuclei in Rare-earth Region

摘要: 研究了奇质子核Lu和Ta同位素链h11/2质子9／2[514]转动带旋称劈裂的系统规律，并与同一核区奇奇核的πh11/2×vi13/2两准粒子转动带低自旋区旋称劈裂规律进行了比较，指出奇质子Lu和Ta核三准粒子带的旋称反转很可能是来源于h11/2准质子和 i13/2准中子之间的相互作用。The systematic features of signature splitting of the h11/2 9/2 [ 514] rotational band in Lutetium and Tantalum isotope chains have been investigated and compared with that of πh11/2×vi13/2 2-quasiparticle band in oddodd nuclei of the same nuclear region. It is shown that signature inversion of 3-quasiparticle band of some odd- Z Lutetium and Tantalum nuclei most probably caused by the p-n interaction of h11/2 quasiproton and i13/2 quasineutron.
- 奇质子核 /
- 旋称反转 /
- 三准粒子转动带 /
- p-n相互作用
Abstract: The systematic features of signature splitting of the h11/2 9/2 [ 514] rotational band in Lutetium and Tantalum isotope chains have been investigated and compared with that of πh11/2×vi13/2 2-quasiparticle band in oddodd nuclei of the same nuclear region. It is shown that signature inversion of 3-quasiparticle band of some odd- Z Lutetium and Tantalum nuclei most probably caused by the p-n interaction of h11/2 quasiproton and i13/2 quasineutron.