Accession Number : ADA130111

Title :   Experimental and Theoretical Investigation of Optogalvanic Effects.

Descriptive Note : Annual technical rept. 30 Jun 81-29 Sep 82,

Corporate Author : WISCONSIN UNIV-MADISON DEPT OF PHYSICS

Personal Author(s) : Lawler,James E.

Report Date : 24 NOV 1982

Pagination or Media Count : 39

Abstract : Research on the 594.5 nm optogalvanic effect in the Neon positive column discharge was performed. Absolute measurements of the effect per unit of absorbed lser power were performed for discharge radius-pressure products of 9.1 cm-Torr to 1.0 cm-Torr and for substaining direct currents of 1 to 16 mA. The effect was modeled in this regime by applying perturbation theory to key rate equations. The model predictions are in agreement with the experimental measurements. Associated measurements of absolute metastable densities indicate that the studied regime covers the transition from a discharge sustained primarily by single-step electron impact ionization to a discharge sustained primarily by two-step ionizatrion via the 2p53s metastable levels. (Author)

Descriptors :   *Cathodes, *Optics, *Glow discharges, *Measurement, Photons, Electron density, Absorption, Models, Predictions, Theory, Experimental data, Capillary tubes, Helium, Neon, Transitions, mercury

Subject Categories : Electrical and Electronic Equipment
      Test Facilities, Equipment and Methods
      Optics
      Quantum Theory and Relativity

Distribution Statement : APPROVED FOR PUBLIC RELEASE