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arXiv 0705.4420physics.plasm-ph
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H ~-离子在H2等离子体中的非平衡速度分布及光剥离测量

Non equilibrium velocity distributions of H- ions in H2 plasmas and photodetachment measurements

P. Diomede, S. Longo, M. Capitelli

摘要:

本文从理论上研究了多尖峰离子源中典型条件下负氢离子H ~-的能量分布函数。H/H_2混合物的情况下,研究了H-传输的动力学方程的Monte Carlo解。对于完全离解的H等离子体和均匀约化电场(E/N)的情况,得到了一个简单的解析模型。结果与激光光剥离实验推导出的两组分布吻合得很好,并解释了低能组作为负离子与H原子的电荷交换碰撞的效果。

英文摘要:

A theoretical study of the energy distribution function of the negative hydrogen ion H- in typical conditions for multicusp ion sources is presented. The case of H/H2 mixture is studied by a Monte Carlo solution of the kinetic equation for H- transport. A simple analytical model is obtained for the case of a fully dissociated H plasma and uniform reduced electric field (E/N). Results are in good agreement with the two-group distribution deduced from laser photodetachment experiments and explain the low energy group as an effect of the charge exchange collisions of negative ions with H atoms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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