ELECTROMAGNETIC STUDIES IN SHOCK PRODUCED PLASMAS
Annual rept. no. 3
GENERAL APPLIED SCIENCE LABS INC WESTBURY NY
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An integral part of the work performed on this contract has been the development of a spatially resolving electron density microwave diagnostic technique useful in a range of electron densities infrequently explored by other investigators. This technique permits accurate spatial resolution in plasma gradients for electron densities, orders of magnitude below that possible, using a conventional microwave interferometer. After an initial calibration phase in which argon was the driven gas in the shock tube, this microwave technique was used to measure electron densities and electron density profiles behind normal air shocks in the range of Mach number 8.5-11 and initial pressure conditions of approx. 1 mm Hg. The report gives a summary of the physical problem and the methods of solutions. It also deals with the properties of an electromagnetic wave propagating through a plasma with random or periodic spatial density variations.
- Plasma Physics and Magnetohydrodynamics