Journal of the Korean Graphic Arts Communication Society (한국인쇄학회지)

The Korean Graphic Arts Communication Society (한국인쇄학회)
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Study on Characteristics of Plasma in Hollow Cathode Discharge

Hollow Cathode Discharge에서 플라즈마 특성에 관한 연구

  • Yoon, Man-Young (Dept. of Information & Communications, College of Engineering, Joong-Bu University) ;
  • Shin, Jong-Soon (Dept. of Graphic Arts & Media, College of Engineering, Joong-Bu University)
  • 윤만영 (중부대학교 공과대학 정보통신학과) ;
  • 신종순 (중부대학교 공과대학 인쇄미디어학과)
  • Published : 2005.12.01
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Abstract

The measured plasma temperature of Ar hollow cathode discharge for several metal cathodes are about $620\;{\sim}\;780K$ at discharge current of $7\;{\sim}\;10mA$. 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 the lowest metastable atoms density at low current.

Keywords