Density Measurement of Negative Hydrogen Ions by DC Laser Photodetachment Method
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概要
- 論文の詳細を見る
The change of the electron saturation current of a Langmuir probe in a hydrogen discharge due to irradiation of Ar^+ laser has been measured as a function of the distance between the probe and the laser beam. The increase of the probe current caused by the photodetachment of negative ions of hydrogen (H^-) induced by the laser is inversely proportional to the distance. The H^- density can be determined from this dependence of the increase of the probe current upon the laser-probe distance. However, a simplified treatment of the measured characteristics results in an overestimation of the H^- density, and a correction to account for the effect of sheath formation around the probe is made. The H^- density determined after the correction ranges from 15% to 50% of the electron density.
- 社団法人応用物理学会の論文
- 1995-05-15
著者
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Wada Motoi
Department Of Electronics Doshisha University
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Wada Motoi
Department Of Elctronics Doshisha University
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Yokoyama Mitsuru
Department Of Electronics Doshisha University
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Yokoyama Mitsuru
Department Of Electronic Science And Engineering Kyoto University:device Technology R&d Laborato
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