PLASMA DIAGNOSTIC TECHNIQUES FOR NONEQUILIBRIUM PLASMAS.
Annual rept. no. 2, 1 Sep 67-30 Oct 68,
FLORIDA UNIV GAINESVILLE DEPT OF NUCLEAR ENGINEERING SCIENCES
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A model to explain the gas-breakdown was developed and simulated with the aid of an analog computer. Experimental results verified to a large extent the theory and proved the applicability of such a model. Furthermore, several diagnostic methods were studied in order to obtain information about the various plasma parameters. The most sophisticated thereof was scattering of a laser beam by the plasma which yielded time and spatial resolved electron temperatures in the order of one million degrees Kelvin. Evaluation of Doppler-broadened, characteristic hydrogen lines made a determination of the gas temperature possible, which turned out to be in the order of 10,000K and can be assumed equal to the ion temperature. As a useful side product the development of two very sensitive detection systems was achieved, namely for low photon and neutron fluxes. The first system was already successfully employed whereas the latter will be a possible diagnostic tool for planned investigations during the next period. Author
- Plasma Physics and Magnetohydrodynamics