Dielectronic recombination rate coefficients to excited states of Ne VII from Ne VIII
Dielectronic recombination rate coefficients to excited states of Ne VII from Ne VIII
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DOI：
10.1088/0953-4075/32/22/311
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发表时间：
1999-11
期刊：
影响因子：
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通讯作者：
I. Murakami;U. Safronova;T. Kato
中科院分区：
文献类型：
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作者：
I. Murakami;U. Safronova;T. Kato
计算了类be Ne （Ne6+）包括1s22pnl （n = 2-9, l n-1）和1s23l´nl （n = 3-6, l n-1）态的能级、辐射跃迁概率和自电离率。计算采用了两种理论方法：微扰理论z -展开法（MZ码）和多构型Hartree-Fock法（Cowan码）。考虑了高于1s22s和1s22p阈值的自电离水平，并计算了它们的贡献。得到了类li Ne （Ne7+）离子到类be Ne （Ne6+）离子的结合态选择性介电子复合速率系数。构型混合对n6能级的主量子数n、介电子复合速率系数分布有重要影响。速率系数的轨道角动量量子数l分布在l = 4-5附近出现峰值。高n激发态的速率系数用标度定律外推。推导了总介电子复合速率系数作为电子温度的函数。
Energy levels, radiative transition probabilities and autoionization rates for Be-like Ne (Ne6+) including 1s22pnl (n = 2-9, l n-1) and 1s23l´nl (n = 3-6, l n-1) states are calculated. Two theoretical methods, the perturbation theory Z-expansion (MZ code) method and the multi-configurational Hartree-Fock (Cowan code) method, are used for the calculations. Autoionizing levels above the 1s22s and 1s22p thresholds are considered and their contributions computed. The state-selective dielectronic recombination rate coefficients from Li-like Ne (Ne7+) ions to Be-like Ne (Ne6+) ions for bound states of Ne6+ ions are obtained. Configuration mixing plays an important role for the principal quantum number, n, distribution of the dielectronic recombination rate coefficients for n6 levels. The orbital angular momentum quantum number, l, distribution of the rate coefficients shows a peak around l = 4-5. The rate coefficients for the excited states with higher n are extrapolated using a scaling law. The total dielectronic recombination rate coefficients are derived as a function of electron temperature.