Accession Number : AD0773977

Title :   The Influence of Negative Ion Processes on the Stability of Molecular Gas Discharges.

Descriptive Note : Technical rept.,


Personal Author(s) : Nighan,W. L. ; Wiegand,W. J.

Report Date : 01 FEB 1974

Pagination or Media Count : 70

Abstract : Theoretical and experimental studies of negative ion processes and their influence on the stability of weakly ionized glow discharges have been conducted. Emphasis in these investigations has been directed toward analysis of gas mixtures in which negative ions are produced by dissociative electron attachment of CO2, CO, or O2. It is shown that attachment and detachment reactions normally occurring in discharges containing these species can significantly affect both the steady state and transient characteristics of the plasma, even when an external source of ionization is provided. The electron temperature dependence of the electron-molecule attachment coefficient is found to be particularly important in determining the occurrence of ionization instability. (Modified author abstract)

Descriptors :   *Anions, *Glow discharges, *Gas ionization, Plasmas(Physics), Electron capture, Carbon dioxide, Oxygen, Carbon monoxide, Instability, Clustering, Ions, Stability

Subject Categories : Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE