PLASMA DIAGNOSIS BY MEANS OF PHOTON-ELECTRON SCATTERING,
Abstract
A brief summary of photon-electron scattering experiments is presented, and comments made regarding their application to plasma diagnostics. The general field of gas discharge afterglow studies is reviewed, and a summary of recent experimental studies of helium afterglow is presented. A photon-electron scattering apparatus was used to perform experiments indicating the feasibility of afterglow studies using the Thomson scattering method. An impure helium discharge afterglow having properties which make it difficult to diagnose by other means was studied using laser scattering. The afterglow was also examined spectroscopically, and the results are compared. Unexpected phenomena which have been called induced luminosity and giant scattering were observed. The former is superficially like the radiation enhancement reported by Rose, Lidsky, and Thompson, but there are substantial differences. The observed effects appear to arise from hydrocarbon impurities in the gas. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1964
- Accession Number
- AD0437790
Entities
People
- S. E. Schwarz
Organizations
- California Institute of Technology