Accession Number : AD0653793

Title :   MAGNETIC COMPRESSION OF ELECTRON BEAMS.

Descriptive Note : Quarterly rept. no. 7, 1 Jan-31 Mar 67,

Corporate Author : HUGHES RESEARCH LABS MALIBU CALIF

Personal Author(s) : Amboss,Kurt

Report Date : JUN 1967

Pagination or Media Count : 43

Abstract : The objective of this program is to compress a perveance 0.54 x 10 to the -6th power A/V raised to the 3/2 power electron beam by a factor of 1000 and to gain an understanding of the behavior of the compressed beam. Magnetic compression has been demonstrated with a short field buildup provided by a simple pole-piece. If a similar result can be achieved with a much denser beam, magnetic compression will provide an attractive method of obtaining beams of the required size. Highly compressed beams with moderate amounts of space charge take on an almost gaussian appearance after compression; this can be explained by assuming that the transverse energy is primarily in rotation. The beam has an effective transverse temperature TB given by TB = TcAc where Tc is the cathode temperature and Ac is the area compression of the beam.

Descriptors :   (*ELECTRON BEAMS, MAGNETIC FIELDS), ELECTRON GUNS, COMPRESSIVE PROPERTIES, FOCUSING, DENSITY, DISTRIBUTION FUNCTIONS

Subject Categories : Electrical and Electronic Equipment
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE