关于A≈190核区奇质量核超形变转动单带自旋指定的讨论  

Analysis by Synthesis of the Spin Assignment for the Superdeformed Single Bands in A≈190 Odd Nuclei

作　　者：狄尧民[1] 

机构地区：[1]徐州师范大学物理系,徐州221009

出　　处：《高能物理与核物理》2003年第6期503-506,共4页High Energy Physics and Nuclear Physics

基　　金：江苏省教育厅自然科学基金资助~~

摘　　要：不拘泥在I(I+1)展开式中究竟取几项 (即采用三参数还是四参数 ) ,而是着重看其收敛过程 ,并在这基础上用物理量拟合法和带首转动惯量系统学等方法对A≈ 190核区奇质量核的超形变转动单带的自旋指定做了综合分析和讨论 ,给出了结果并与其他文献做了比较 .The spin assignments for the superdeformed single bands in A≈190 odd nuclei are discussed by use of the method of analysis by synthesis. In this work, the I(I+1) expression is used to fit the experimental energies of γ-transition. In contrast to other procedure, the convergence process of the series expansions is put stress upon whereas how many terms to be taken exactly in the expression does not emphasized. Moreover as well as the method of fitting the physical quantity, the moment of inertia of band heads is also calculated and the method of that systematics is used for the spin assignments. In practice the systematics of the moment of inertia of band heads is more efficient than the method of fitting the physical quantity in the spin assignment. As for a few bands which spin assignment is difficult the deviation from the typical rotational bands must be considered. Finally the results of the spin assignment and the comparison with other literatures are given.

关 键 词：A≈190核区 奇质量核 超形变转动单带 自旋指定 带首转动惯量系统学 物理量拟合法 

分 类 号：O571.2[理学—粒子物理与原子核物理]