高剥离类镁等电子序列的磁偶极M1和电四极E2光谱跃迁理论研究  

HIGHLY STRIPPED MAGNETIC DIPOLE M1 AND ELECTRIC QUADRUPOLE E2 TRANSITIONS IN THE 3s3p CONFIGURATION OF THE Mg-LIKE IONS

作　　者：易有根[1] 郑志坚[2] 唐永建[2] 朱正和[3] 

机构地区：[1]湘潭师范学院物理系,湘潭411201 [2]中国工程物理研究院高温高密度等离子体物理国家重点实验室,绵阳621900 [3]四川大学原子分子工程研究所,成都610065

出　　处：《核聚变与等离子体物理》2003年第2期89-95,共7页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金资助项目(19574034);中国工程物理研究院基金资助项目(20010208)

摘　　要：利用全相对论性多组态Dirac Fock广义平均能级方法,系统地计算了类镁离子3s3p磁偶极M13P2-3P1和电四极E23P2-3P0(Z=20～103)光谱跃迁的能级间隔、跃迁几率和振子强度。计算中考虑了原子核的有限体积效应,进行了高阶Breit修正和QED修正,所得到的能级间隔和最近的实验数据及理论计算值进行了比较。计算结果表明:高原子序数的高荷电离子的磁偶极矩M1和电四极矩E2跃迁几率和中性原子的电偶极E1的相当,在ICF和MCF高温激光等离子体中,磁偶极矩M1和电四极矩E2跃迁过程不容被忽视。A fully relativistic Multiconfiguration DiracFock method with Breit and QED corrections is used to calculate energy levels, transition probabilities and oscillator strengths for the 3s3p magnetic dipole M1 3 P2-3P1 and electric quadrupole E2 3 P2-3P0(Z=20～103)of the Mglike ions. In this calculation, we have considered significant Breit and QED corrections.The results are in good agreements with recent experimental data and other theoretical values. The calculated results show that the magnetic dipole and electric quadrupole transition probabilities are in correspondence with these of E1 transitions and cannot be ignored in the laser plasma of high temperature in ICF and MCF Fusion.

关 键 词：高剥离态 类镁离子 磁偶极 跃迁几率 振子强度 能级间隔 全相对论性多组态Dirac-Fock广义平均能级方法 电四极E2光谱跃迁 

分 类 号：O562.3[理学—原子与分子物理]