Accession Number : ADA117896

Title :   Experimental and Theoretical Investigation of Microwave and Millimeter Wave Radiation from Hollow, Rotating, Electron Beams.

Descriptive Note : Annual rept. 1 Dec 79-30 Nov 81,

Corporate Author : MARYLAND UNIV COLLEGE PARK DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Destler,William W ; Weiler,R L ; Striffler,Charles D

PDF Url : ADA117896

Report Date : Nov 1981

Pagination or Media Count : 34

Abstract : During this period this effort has explored the scaling of the negative mass instability to regimes associated with smaller plasmas and short wavelengths for the plasma-produced radiation. An experimental apparatus for these studies is near completion. The nonlinear electromagnetic interaction between the collective/bunches of electrons and the radiation field has been formulated in an attempt to derive the efficiency of the production of radiation. In addition, the Dragon electron beam source is currently being improved for future radiation production experiments based on the negative mass instability. Experimental efforts at high powers have resulted in the enhancement of radiation at a single frequency. This last effort has utilized a 'double-magnetron cavity' to enhance the radiation power in Ka band at 26 and 41GHz. (Author)

Descriptors :   *Electron beams, *Microwaves, *Millimeter waves, Plasmas(Physics), Cavities, Rotation, Cyclotrons, Broadband, Radiation

Subject Categories : Particle Accelerators

Distribution Statement : APPROVED FOR PUBLIC RELEASE