Accession Number : ADA305552

Title :   Electron Detachment and Gas Dielectric Phenomena.

Descriptive Note : Final rept. 1 Apr 92-1 Apr 95,

Corporate Author : TENNESSEE UNIV KNOXVILLE

Personal Author(s) : Christophorou, L. G. ; Datskos, P. G. ; Pinnaduwage, L. A. ; Carter, J. G.

PDF Url : ADA305552

Report Date : MAY 1995

Pagination or Media Count : 145

Abstract : Measurements are reported on the rate constants and cross sections of electron attachment to SF6, c-C4F6, and C6F6 as a function of temperature in the range 300 to 600 K. Measurements are reported, also, of the rate constant for the temperature enhanced autodetachment from SF6(-), c-C4F6(-) and C6F6(-) in the same temperature range. New techniques are described for the accurate measurement of the effect of temperature on electron attachment and detachment processes and on the photodetachment of anions in dense fluids. Photodetachment measurements on SF6(-) and C6F6(-) are reported and discussed. Optically enhanced electron attachment has been observed in laser irradiated H2, SiH4 and CH4. The usefulness of these findings in understanding gas dielecrtic phenomena and plasma processes in gas-discharge-based technologies is discussed.

Descriptors :   *DIELECTRICS, *FLUORINATED HYDROCARBONS, PHOTOCHEMICAL REACTIONS, ELECTRONIC STATES, SILANES, OPTICAL PUMPING, HEXAFLUOROBENZENE.

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE