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Measurement of Optogalvanic Signal in Hollow Cathode Discharge Tube  

이준회 (충남대학교 물리학과)
정기주 (공주대학교 사범대학 물리교육과)
Publication Information
Journal of the Korean Vacuum Society / v.11, no.2, 2002 , pp. 119-126 More about this Journal
Abstract
The optogalvanic signals were measured using hollow cathode discharge tube with argon as buffer gas at change of discharge currents. A change of ionization rate due to electron collision causes an increase or decrease of the electric conductivity, This change in electric conductivity generates the optogalvanic signal. We conclude that optogalvanic signal has close relation with change of the lowest metastable atoms density at low current.
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