›› 2016, Vol. 36 ›› Issue (1): 94-102.doi: 10.3780/j.issn.1000-758X.2016.0016
WANG Shang-Min1, ZHANG Jia-Liang2，*, ZHANG Tian-Ping1, FENG Jie1, ,ZHENG Mao-Fan1, HUANG Yong-Jie1
A method of electron density measurement inside discharge channel of pulsed-plasma thruster (PPT) with higher accuracy was proposed, based on Stark broadening spectrum analysis. By measuring the line profile and the full-width at half-maximum (FWHM) of C atom spectrum emitted by PPT plasma,the electron density can be calculated. But this requires adequate high electron density. If the electron density is lower than 1016 cm-3, the accuracy of diagnosis is dramatically decreased. Therefore, a tiny H tracer based on H atom spectrum of the line profile and the full-width at half-maximum was proposed to measure the electron density. Comparing with the conventional method, it can improve remarkably the accuracy of electron density measurement.
analysis of H atom spectrum,
WANG Shang-Min, ZHANG Jia-Liang, ZHANG Tian-Ping, FENG Jie, ZHENG Mao-Fan, HUANG Yong-Jie. A diagnostic scheme for electron density in μ-PPT plasma using H Stark broadening[J]. , 2016, 36(1): 94-102.
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