激光金等离子体中Au~(49+)能级寿命的相对论多组态计算

根据扩展的相对论多组态Dirac Fock理论,采用"多功能相对论原子结构程序",计算了类锌Au49+的能级寿命、能级宽度和光谱跃迁波长。计算所得的波长值与实验结果符合较好;能级寿命与能级宽度的大小关系符合海森堡的能量与时间测不准原理。     

激光金等离子体中Au52+静态能级寿命的相对论多组态计算

根据扩展的相对论多组态Dirac-Fock理论,采用"多功能相对论原子结构程序(GRASP2)",计算类钴Au52+的能级寿命、能级宽度和光谱跃迁波长,计算所得波长值与实验结果符合较好.能级寿命与能级宽度的大小关系符合海森堡的能量与时间测不准原理.     

激光金等离子体中Au^49＋能级寿命的相对论多组态计算

根据扩展的相对论多组态Dirac-Fock理论，采用“多功能相对论原子结构程序”，计算了类锌Au^49 的能级寿命、能级宽度和光谱跃迁波长。计算所得的波长值与实验结果符合较好；能级寿命与能级宽度的大小关系符合海森堡的能量与时间测不准原理。     

激光金等离子体中Au48+离子的光谱分析和能级寿命

根据扩展的全相对论多组态Dirac-Fock理论,采用"多功能相对论原子结构程序GRASP2(General-Purpose Relativistic Atomic Structure Program 2,1992),考虑量子电动力学(QED)效应和Breit修正,结合惯性约束聚变(ICF)实验室等离子体中已经观察到的激光照射Au元素所产生的一些多重电荷态离子的外壳层共振线跃迁光谱,选取重要的电子组态,计算激光金等离子体中类镓Au48+离子的光谱跃迁波长、能级寿命和能级宽度.计算所得波长值与实验值符合较好,能级寿命与能级宽度的大小关系符合海森堡的能量与时间测不准原理.计算结果对金等离子体中的离子平均寿命、电荷态分布和平均电离度的研究具有一定的参考价值.     

类氦离子Cr~(22 ) 精细结构能级和光谱跃迁的相对论多组态计算

采用相对论多组态自洽场方法,计算了类氦Cr22 离子的精细结构能级,能级宽度,激发态寿命和光谱跃迁参数。计算中考虑了核的有限体积效应,Breit修正,QED修正和轨道极化效应。所得结果与文献的实验值和计算值进行了比较     

类氦离子Cr^22＋精细结构能级和光谱跃迁的相对论多组态 …

采用相对论多组态自洽场方法,计算了Ｃｒ＾２２＋离子的精细结构能级,能级宽度,激发态寿命和光谱跃迁参数。计算中考虑了核的有限体积效应,Ｂｒｅｉｔ修正,ＱＣＤ修正和轨道极化效应。所得结果与文献的实验值和计算值进行了比较。     

激光金等离子体中Au47+、Au53+的离子结构和光谱分析

根据扩展的相对论多组态狄拉克-福克（Dirac-Fock）理论,采用“多功能相对论原子结构程序（GRASP^2）”,考虑量子电动力学（QED）效应和布雷特（Breit）修正,选用二参量费米有限核电荷分布和扩展平均能级模型,并考虑组态问的相互作用和电偶极跃迁,计算了类锗Au^47＋、类铁Au^53＋的跃迁波长,跃迁几率和振子强度,计算的波长与实验值符合较好。研究表明,在类锗^47＋、类铁Au^53＋的跃迁中,3d-4f是一条较强的跃迁通道。计算所得的波长值对金等离子体的能级寿命、电荷态分布和平均电离度研究有一定的参考价值。     

类镁离子Mn XIV和Zn XIX的精细结构能级和辐射寿命

 用全相对论多组态自洽场方法，计算了类镁离子Mn XIV和Zn XIX的两百多个精细结构能级和辐射寿命以及各种跃迁参数。结果分析表明，能级的计算值和实验值符合得很好。     

Cr20+、Cu25+和Lr99+离子精细结构能级和辐射寿命的计算

用扩展的全相对论多组态自洽场方法,计算了类铍离子Cr20+、Cu25+和Lr99+的170个精细结构能级和辐射寿命以及其他各种跃迁参数,能级的计算值和实验值符合得很好.     

HgII离子精细结构能级和辐射寿命

用全相对论多组态自洽场方法,计算了HgII离子的5d10nl、5d96s2、5d9nsnp、5d96p2和5d86s26p等组态的3840个精细结构能级和辐射寿命以及各种跃迁参数.能级的计算值和实验值符合得较好.同时,我们还发现了一些长寿命亚稳态能级.     

金等离子体中7离子系统(Au47+～Au53+)的电荷态分布及其解析函数关系

根据扩展的相对论多组态Dirac-Fock理论计算得到的Au47 ~Au53 离子的平均离子寿命、能级能量和能级简并度,计算了各离子的电离速率常数、复合速率常数和配分函数,并由此得到了离子间的电离-复合平衡常数.基于这些数据,利用电离复合动力学方法研究了金等离子体内7离子系统在一定电子温度和电子密度下的电荷态分布和平均离化度.并给出了Au47 ~Au53 的离子丰度与电子温度和电子密度的函数关系.     

Properties of the Kα X-ray transitions in highly ionized cobalt

Multi-Configuration Dirac–Fock and relativistic configuration interaction calculations with the inclusion of the Breit interaction, quantum electrodynamics and finite nuclear mass corrections have been carried out in the extended optimal level (EOL) scheme on the transition wavelengths, transition probabilities, absorption oscillator strengths and line strengths of the Kα X-ray from Co XIIX to Co XXVI. The calculated values are compared with the other available data on He-like to Be-like cobalt and are found to be in very good agreement with them. This confirms the present calculations. These data provide reference values for level lifetimes, charge state distribution and average charge of cobalt plasmas.     

高离化态类Ne离子的与X射线激光有关的3p-3s跃迁的理论研究

利用多组态Dirac-Fock(MCDF)理论方法,系统研究了与X射线激光有关的类Ne等电子系列离子(Z=50～57)的2s22p6、2s22p53e和2s2p63e(e=s、p、d)激发态的能级以及跃迁几率、波长和振子强度.详细讨论了关联效应对与X射线激光有关的能级寿命以及跃迁几率的影响,给出并分析了与x射线激光有关的3p-3s跃迁的波长,几率和振子强度的变化规律,部分计算结果与已有的理论和实验结果作了比较.     

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Using the fully relativistic configuration interaction (RCI) method and the multi-configuration Dirac-Fock (MCDF) method and taking quantum electrodynamical (QED) effect and Breit correction into account, wavelengths, transition probabilities and oscillator strengths were calculated for electric dipole (E1) transitions and magnetic dipole (M1) transitions in Au⁵⁰⁺ ion. The obtained energy levels of some excited states and wavelengths of transitions in Au⁵⁰⁺ ion from the method were compared with other theoretical and experimental results, and a good agreement with other results was shown. The calculated transition probabilities and oscillator strengths in E1 transitions using the velocity and length gauges respectively confirmed the accuracy of our calculations. The calculation results indicated that for high-Z highly ionized atom, some forbidden transitions could be very important.     

Relativistic configuration interaction calculations on Kα X-ray satellites of magnesium ions

In this work, the multi-configuration Dirac-Fock (MCDF) and relativistic configuration interaction (RCI) methods have been used to calculate the transition wavelengths, electric dipole transition probabilities, line strengths and absorption oscillator strengths for the Kα X-ray from Mg III to Mg XI. We also take the contributions from the Breit interaction, finite nuclear mass corrections and quantum electrodynamics corrections to the initial and final levels, into account. The present values for Mg X and Mg XI were in good agreement with the previous experimental and theoretical results. The new data in this work provide reference values for the level lifetimes, charge state distributions, and average charge of magnesium plasmas.     

Dirac R-matrix calculations of photoionization cross sections of Ni XII and atomic structure data of Ni XIII

We performed R-matrix calculations for photoionization cross sections of the two ground state configuration 3s²3p⁵ (²P^o_3/2,1/2) levels and 12 excited states of Ni XII using relativistic Dirac Atomic R-matrix Codes (DARC) across the photon energy range between the ionizations thresholds of the corresponding states and well above the thresholds of the last level of the Ni XIII target ion. Generally, a good agreement is obtained between our results and the earlier theoretical photoionization cross sections. Moreover, we have used two independent fully relativistic GRASP and FAC codes to calculate fine-structure energy levels, wavelengths, oscillator strengths, transitions rates among the lowest 48 levels belonging to the configuration (3s²3p⁴, 3s3p⁵, 3p⁶, 3s²3p³3d) in Ni XIII. Additionally, radiative lifetimes of all the excited states of Ni XIII are presented. Our results of the atomic structure of Ni XIII show good agreement with other theoretical and experimental results available in the literature. A good agreement is found between our calculated lifetimes and the experimental ones. Our present results are useful for plasma diagnostic of fusion and astrophysical plasmas.     

锂内壳高激发2smd4De,2pnd4Do系列的能量和辐射跃迁

采用鞍点变分方法计算了锂内壳高激发四重态1s2smd⁴D^e(m=3—7)和1s2pnd⁴D^o(n=3—5)的能量,利用截断变分方法得到能量改进量,并计算了相对论修正、质量极化效应,从而获得了高精度的能量计算值.同时还对该系统之间的辐射跃迁波长、振子强度和辐射跃迁率进行了计算.计算结果与实验符合得很好. 关键词： 内壳高激发态 鞍点变分方法 振子强度 精细结构