用弹性电子散射研究奇特原子核的结构和性质

项目名称： 用弹性电子散射研究奇特原子核的结构和性质

项目编号： No.11275138

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 王再军

作者单位： 天津职业技术师范大学

项目金额： 50万元

中文摘要： 本项目从理论上研究电子散射的散射截面和形状因子对不稳定原子核的结构和性质的敏感性，探索用电子散射研究不稳定原子核的结构和性质的方法。研究内容有四个方面：一是结合现代原子核结构理论发展电子和奇特原子核散射的理论模型并编制计算程序（包括球形核，椭球形变核和"结团"原子核）；二是对球形核进行系统计算，编制球形核形状因子数据图集，系统研究形状因子对电荷分布不同区域以及外围质子不同运动状态的敏感性，总结其依赖规律；同时，针对有争议的原子核，如"bubble nucleus"等，进行计算和研究，探索用电子散射探测"nuclear bubble"的可行性；三是研究散射截面和形状因子对椭球形变原子核的形变参数的敏感性，寻找形状因子随形变参数的变化规律，探索用电子散射探测原子核形变的可行性。四是探索用电子散射探测原子核内是否有"结团"的可能性。这些结果将为在新一代电子-原子核对撞机上进行的实验提供重要参考。

中文关键词： 不稳定原子核；电子散射；磁形状因子；能级反转；狄拉克旋量

英文摘要： In this project, the sensitivity of elastic electron-nicleus scattering differential cross sections and form factors to the variation of the structures and properties of unstable nuclei is studied theoretically, so as to find new methods of studying the structures and properties of unstable nuclei with electron-nucleus scattering. The study includes four parts: In the first part, the theoretical models,including spherical, ellipsoidal and cluster model, of electron scattering off exotic nuclei will be developed based on the modern nuclear structure theories,such the RMF theory. The codes (including codes for the spherical and ellipsoidal charge distributions) based on the theoretical models will also be written. In the second part, the spherical nuclei will be systematically calculated ，and the numerical results will be compiled into a collection and systematically studied to explore the sensitivity of the form factors and the cross sections to the charge density distributions and the states of motion of outer shell protons. Special model calculations and dicussions will also be focused on such nuclei as the debated "bubble nuclei" which may have special charge distrbutions,so as to explore the possibility of detecting the "nuclear bubble" with electron-nucleus scattering. In the third part, we focus our study o

英文关键词： unstable nuclei；electron scattering；magnetic form factor；level inversion；Dirac spinor