Laser-Assisted Probing Method for Measuring Negative Ions in Plasmas
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概要
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A laser beam is focussed on a position in a plasma and electrons photodetached from negative ions are detected by a probe. The probe potential for obtaining an optimum signal intensity is slightly below the voltage that causes the sheath breakdown. The signal-to-noise ratio is increased more than in the case where the signal is detected either from the anode or the cathode. Spatial resolution is obtainable to the order of the laser beam diameter.
- 社団法人応用物理学会の論文
- 1991-11-01
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