Investigation of an abnormal He-glow discharge with Mg-cathode
In a cold cathode abnormal glow discharge a nearly uniform electron beam is emitted from the cathode fall and, as a consequence of gas ionisation, a quasi-neutral and almost field-free plasma is formed in the negative glow. The spatial distributions of the electron temperature, the electron density and the plasma potential have been determined by means of a Langmuir probe. In contrast to other experiments, the experimental arrangement used required a short electrode separation and metal walls of sufficiently large diameter to avoid the effects of cathode sputtering and the disturbance of the discharge by the metal wall. This paper reports the detailed investigation of the properties of this plasma under different discharge conditions.
Bibliographic Reference: Article: XXI International Conference on Phenomena in Ionized Gases : Proceedings II (1993) pp. 325-326
Record Number: 199311376 / Last updated on: 1994-11-28
Original language: en
Available languages: en