光学学报, 2005, 25 (12): 1585, 网络出版: 2006-05-23
激光金等离子体中Au47+、Au53+的离子结构和光谱分析
Ionic Structure and Spectrum Analysis of Au47+ and Au53+ in Au Laser Plasma
等离子体物理 跃迁波长 跃迁几率 振子强度 类锗Au47+ 类铁Au53+ plasma physics transition wavelength transition probability oscillator strength Ge-like Au47+ Fe-like Au53+
摘要
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(GRASP2)”,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,并考虑组态间的相互作用和电偶极跃迁,计算了类锗Au47+、类铁Au53+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Au47+、类铁Au53+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。
Abstract
Based on the extended relativistic multi-configuration Dirac-Fock theory, with quantum electrodynamical (QED) effect and Breit correction, transition wavelengths, transition probabilities and oscillator strengths of Au47+ and Au53+ have been calculated with the General-purpose Relativistic Atomic Structure Program (GRASP2). Fermi nuclear model of two parameters, extended-average-level model, configuration interaction and electric dipole transition have been considered in the program. The wavelengths obtained are in good agreement with the experimental data available. It is found that the transition of 3d-4f is the stronger transition channel. These data provide reference valuable for level lifetime, charge state distribution and average ionization degree of Au plasma.
程科, 朱志艳, 朱正和, 蒋刚, 唐永建, 傅依备. 激光金等离子体中Au47+、Au53+的离子结构和光谱分析[J]. 光学学报, 2005, 25(12): 1585. 程科, 朱志艳, 朱正和, 蒋刚, 唐永建, 傅依备. Ionic Structure and Spectrum Analysis of Au47+ and Au53+ in Au Laser Plasma[J]. Acta Optica Sinica, 2005, 25(12): 1585.
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