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Afterglow Plasma Diagnostics with a Microwave Sampling Radiometer

Stenzel, R. L. and Gould, R. W. (1969) Afterglow Plasma Diagnostics with a Microwave Sampling Radiometer. Review of Scientific Instruments, 40 (11). pp. 1461-1466. ISSN 0034-6748. doi:10.1063/1.1683827.

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A simple waveguide arrangement has been developed for the study of microwave absorption and emission from a magnetized afterglow plasma column. The time and frequency resolved measurements are performed by a sampling radiometer. A comparison and null technique permits the direct measurement of the electron temperature. Continuous plots of the temperature vs frequency, magnetic field, and afterglow time are made possible by means of a servoloop. The width of the emission or absorption spectrum in the range of upper hybrid frequencies is used to derive the electron density which, together with the temperature measurement, allows a more complete analysis of the plasma decay.

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Additional Information:© 1969 The American Institute of Physics. Received 6 June 1969. The authors are indebted to Professor R.S. Harp for interesting discussions and suggestions during the course of this research. In addition, we benefitted from Professor A. Moffet's experience in designing a low noise i.f. preamplifier. This work was supported by the U. S. Atomic Energy Commission.
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U. S. Atomic Energy CommissionUNSPECIFIED
Issue or Number:11
Record Number:CaltechAUTHORS:20130514-105315485
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:38496
Deposited By: Tony Diaz
Deposited On:14 May 2013 22:05
Last Modified:09 Nov 2021 23:37

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