Comparison of current and radiation noises of the normal and abnormal glow discharges in inert gases

Abstract

Current and radiation noise spectra of normal and abnormal obstructed glow discharges were analysed. In the normal glow discharge ionisation waves are usually present. The high number of harmonics of such waves is the source of intense radiation and current noises below 1 MHz. Thermal, generation-recombination and flicker current noise, shot and flicker radiation noise spectra were measured and are discussed.