Accession Number:

ADA149535

Title:

Electron Production, Electron Attachment, and Charge Recombination Process in High Pressure Gas Discharges.

Descriptive Note:

Annual rept. 1 Aug 83-31 Jul 84,

Corporate Author:

SAN DIEGO STATE UNIV CA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s):

Report Date:

1984-09-17

Pagination or Media Count:

119.0

Abstract:

A parallel-plate drift-tube apparatus was used to investigate the electron transport parameters in high gas pressure. The initial electrons were produced either by irradiation of the cathode with excimer laser photons or by two-photon-ionization of a trace of trimethylamine in high pressure gas. The transient voltage pulses due to electron motion between the electrodes were observed. The plasma decay time and the probability for electron leakage from plasma were measured as a function of the ratio of the initial charge density to the applied field. The shortening of electron conduction pulses by adding electron attaching gases to various buffer gases were investigated. The electron attachment rate constants of 02, N20, and CF4 in N2 as well as H20 in Ar, N2 and CH4 were measured at various gas concentrations and EN. It is observed that temporary negative ions due to electron attachment to H20 and CF4 are formed. The diffusion coefficients of electrons in Air were measured in the EN 30 - 300 Td region. Author

Subject Categories:

  • Physical Chemistry
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE