Accession Number : AD0600302

Title :   FEASIBILITY OF BEAM-PLASMA AMPLIFICATION OF MILLIMETER WAVES.

Descriptive Note : Quarterly progress rept. no. 4, 15 Nov 62-15 Feb 63,

Corporate Author : MICROWAVE ASSOCIATES INC BURLINGTON MASS

Personal Author(s) : Chorney,Paul

Report Date : 15 FEB 1963

Pagination or Media Count : 19

Abstract : Beam-plasma-amplifier experiments are described which are being performed with the metal-ceramic X-band study vehicle. Net gains of 30 db and greater have been obtained using a xenon plasma; experiments using argon, nitrogen and vacuum are also described. The life test performed on a hollow cathode gun has concluded, the total useful life of the gun being about 400 hours. More plasma density measurements have been performed on a mercury P. I. G. discharge with a Langmuir probe. The results show that plasma frequencies near 70 Gc have been obtained and that the radial density profile of the plasma is very uniform over a large center portion. The observations of anomalous diffusion in a magnetic field is also pointed out. The progress in the design of the 70 Gc beam-plasma-amplifier study vehicle is described. Results of cavity cold tests and tests on mica vacuum windows are outlined. A gun model has been contructed which is designed to deliver an .008 in. diameter electron beam. (Author)

Descriptors :   (*MICROWAVE AMPLIFIERS, PLASMAS(PHYSICS)), (*PLASMAS(PHYSICS), MICROWAVE AMPLIFIERS), MILLIMETER WAVES, X BAND, NITROGEN, ARGON, XENON, ELECTRON GUNS, CATHODES, CERMETS, TEST EQUIPMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE