Features of the distribution of parameters in a short glow discharge plasma with a flat and hollow cathode
Zhou C.1, Astafiev A. M.1, Kudryavtsev A. A.1, Yuan C.1
1Harbin Institute of Technology, Harbin, China
Email: chenzhou@hit.edu.cn, astafev-aleksandr@yandex.ru, akud53@mail.ru, yuancx@hit.edu.cn
Probe measurements of short discharges in helium without a positive column have been performed with hollow and flat cathodes. It has been established that at low pressures when the discharge consists only of a cathode layer and negative glow plasma, the anode is dark and the anode voltage drop is negative. As pressure increases and a region of Faraday dark space forms, a luminous area appears on the anode which increases as the positive discharge column forms, and the anode voltage drop becomes positive. Keywords: probe potential, glow discharge, hollow cathode discharge, flat cathode discharge, anode voltage drop.
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