Population kinetics on K alpha lines of partially ionized Cl atoms.
Population kinetics on K alpha lines of partially ionized Cl atoms.
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部分电离 Cl 原子 K α 线上的群体动力学。
DOI：
10.1103/physreve.66.016402
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
K. Mima
中科院分区：
文献类型：
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作者：
T. Kawamura;H. Nishimura;F. Koike;Y. Ochi;R. Matsui;Wenjing Miao;S. Okihara;S. Sakabe;I. Uschmann;E. Förster;K. Mima
开发了一个种群动力学程序来分析烃等离子体中部分电离氯原子的K α辐射。在双温等离子体的碰撞-辐射平衡下求解了原子过程。结果表明，快电子主要电离k壳层束缚电子（即内壳层电离），冷电子主要电离到外层束缚电子。部分电离原子的K - α谱线的比值是冷电子温度的函数。用1 TW Ti：蓝宝石激光脉冲以1.5 x 10(17) W/cm(2)照射氯化塑料靶体的K α谱线对模型进行了验证，推测靶表面的等离子体温度约为100 eV。
A population kinetics code was developed to analyze K alpha emission from partially ionized chlorine atoms in hydrocarbon plasmas. Atomic processes are solved under collisional-radiative equilibrium for two-temperature plasmas. It is shown that the fast electrons dominantly contribute to ionize the K-shell bound electrons (i.e., inner-shell ionization) and the cold electrons to the outer-shell bound ones. Ratios of K alpha lines of partially ionized atoms are presented as a function of cold-electron temperature. The model was validated by observation of the K alpha lines from a chlorinated plastic target irradiated with 1 TW Ti:sapphire laser pulses at 1.5 x 10(17) W/cm(2), inferring a plasma temperature of about 100 eV on the target surface.