Accession Number : AD0713399

Title :   ELECTROMAGNETIC WAVE-CHARGE INTERACTION IN CROSSED FIELDS.

Descriptive Note : Final rept. 15 May 67-15 Jun 70,

Corporate Author : CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB

Personal Author(s) : Fox,K. A. ; Meyer,M. A. ; Swierkowski,S. ; Turner,C. W. ; Duzer,T. Van

Report Date : SEP 1970

Pagination or Media Count : 90

Abstract : The purpose of the work on this contract is to investigate the interaction of electromagnetic waves and charge carriers in vacuum and solids. A crossed-field microwave vacuum-tube amplifier has been designed for low-noise operation. The paraxial crossed-field gun design method has been extended to use on magnetically shielded guns. A study of optically stimulated emission from a cathode of suitable form for a crossed-field tube has been conducted. An experimental and theoretical study of electromagnetic and space-charge waves in semiconductors has been performed. A study has been made of the propagation and amplification of bulk acoustic waves in crossed electric and magnetic fields. A study of surface-wave amplification on InSb in crossed electric and magnetic fields has been made. (Author)

Descriptors :   (*CROSSED FIELD DEVICES, *MICROWAVE AMPLIFIERS), (*SEMICONDUCTOR DEVICES, ULTRASONIC RADIATION), ELECTROMAGNETIC RADIATION, ELECTRON GUNS, SPACE CHARGE, SEMICONDUCTORS, CRYOGENICS, INDIUM ANTIMONIDES, PIEZOELECTRIC CRYSTALS, CARRIERS(SEMICONDUCTORS)

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE