Accession Number : AD0680932

Title :   ELECTROMAGNETIC WAVE-CHARGE INTERACTION IN CROSSED FIELDS.

Descriptive Note : Quarterly progress rept. no. 5, 16 May-15 Aug 68,

Corporate Author : CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB

Personal Author(s) : Fos,K. A. ; Swierkowski,S. ; Van Duzer,T. ; Weller,K.

Report Date : DEC 1968

Pagination or Media Count : 34

Abstract : The purpose of the work is to investigate the interaction of electromagnetic waves and charge carriers in vacuum and solids. The construction of a crossed-field amplifier which will incorporate the results of our noise studies is in progress. Work on the crossed-field gun design method developed by R. A. Rao is being carried on to obtain designs for magnetically shielded guns. A method was developed for magnetically shielded guns. A method was developed for the application of a variational technique to reach an optimum compromise between desirable forms of variation of potential and beam thickness along the beam. An experimental and theoretical evaluation of the crossed-field acoustic-wave amplifier is being conducted. The comparison of optimum performance of ZnO longitudinal acoustic amplifiers with the InSb crossed-field counterparts has continued with an effort being made to get an improved basis for comparison in heat dissipation capabilities. The solution of the heat-flow problem is required before definite conclusions can be reached from the calculations. (Author)

Descriptors :   (*ELECTROMAGNETIC RADIATION, INTERACTIONS), (*CROSSED FIELD DEVICES, *MICROWAVE AMPLIFIERS), (*SEMICONDUCTORS, SPACE CHARGE), MECHANICAL WAVES, INDIUM ANTIMONIDES, ELECTRON GUNS, NOISE(RADIO), HELIXES, ACOUSTICS

Subject Categories : Electrical and Electronic Equipment
      Solid State Physics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE