Development of a Laser Probe for Electron Temperature
Abstract
Thomson scattering radiation has been measured in terms of electron concentration and temperature in a free jet facility and a shock tunnel using a 1/2 joule, Q-switched ruby laser. A detector system is described which attenuates the primary ruby wavelength by 10 thousand, discriminates between orthogonal polarization states, analyzes the radiation spectrally and provides a measure of radiation background. The scattering volume was approximately .003 cc for the jet facility and approximately .02 cc cm3 for the shock tunnel. A temperature range of 3000 to 8000K and an electron concentration range 5 x 10 to the 14th power to 5 x 10 to the 15th power/cc was measured. A unique method of measuring electron temperature is described using a passive system utilizing a retardation plate.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1971
- Accession Number
- AD0724180
Entities
People
- D. A. Rogers
- H. Sadjian
Organizations
- General Electric