RESEARCH ON PLASMA DIAGNOSTIC METHODS FOR HIGH TEMPERATURE PLASMA RESEARCH.
Quarterly rept. no. 9, 1 Apr-30 Jun 65,
TEXAS UNIV AUSTIN
Pagination or Media Count:
Investigations on the utilization of a He-Ne 3.39 micron infrared maser for experimental time-space resolved diagnostics of highly transient, extreme temperature, deuterium plasmas are reported. The infrared maser coupled resonator technique for measurement of electron density was extended such that useful data were obtained for a theta-pinch plasma source operating at 50 Kg compression with 4 and 6 Kg reverse bias magnetic fields at 0.1 Torr initial pressure. Measurement of the magnetoplasma Faraday rotation of the plane of polarization of the He-Ne maser infrared radiation by the use of an infrared polarization analyzer was extended and uncertainties in the measurements were reduced. The determination of electron density provided further information for obtaining time-space resolved plasma magnetic fields from the Faraday rotation data. Resonant operation permits investigation of the low density plasma sheaths surrounding the dense core of the theta-pinch. An equation for the efficiency of a plane echelette diffraction grating is developed from the vector Kirchoff integral equation for the electric field by making an approximation for the electric and magnetic fields at the surface of the grating.
- Lasers and Masers
- Plasma Physics and Magnetohydrodynamics