Measurement of H- density in plasma by photodetachment.
Measurement of H- density in plasma by photodetachment.
复制标题
通过光脱离测量等离子体中的 H 密度。
DOI：
10.1051/jphyscol:19797381
复制
发表时间：
1979
期刊：
影响因子：
--
通讯作者：
J. Taillet
中科院分区：
文献类型：
--
作者：
M. Bacal;G. W. Hamilton;A. Bruneteau;H. Doucet;J. Taillet
利用光剥离法测量等离子体中H-浓度的技术已经发展起来。光剥离是通过在红宝石激光器的光脉冲之后电子密度增加而正离子密度没有变化来检测的。光剥离信号的真实性可以通过它们与已知的H-光剥离截面的比较来保证。光剥离数据的解释比探针解释更不明确，因为光剥离不受正离子质量的影响，并且不受德拜距离的限制。具有时间分辨率和空间分辨率的光剥离测量是直接的。
Techniques have been developed for measurement of the density of H- in a plasma by photodetachment. Photodetachment is detected by the increase in electron density with no change in positive ion density after a light pulse from a ruby laser. The authenticity of photodetachment signals can be assured by their comparison with known cross sections for photodetachment of H-. Interpretations of photodetachment data are less ambiguous than probe interpretations because photodetachment is not affected by the mass of positive ions and is not limited in usefulness by the Debye distance. Photodetachment measurements with time resolution and spatial resolution are straightforward.