Accession Number : AD0704009

Title :   PLASMA INSTABILITIES AND COMPENSATION OF THE SPACE CHARGE OF AN ION BEAM,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Nezlin,M. V.

Report Date : 04 MAR 1970

Pagination or Media Count : 40

Abstract : Intense ion beams in magnetic fields, employed in such work as isotope separation and injection into plasma mirror machines are investigated experimentally to determine the beam intensity levels at which beam instabilities arise. A review of the work in this field is given. Detailed analysis of the most important processes include the discussion of the generation of plasma oscillations in a cold plasma inter penetrated by fast ion beams, the instabilities in the ion source plasma and amplification of oscillation in a cold plasma by ion beam oscillations. The criteria for instability growth, amplification and interaction coupling are discussed and examples quoted. The proposed methods of improved compensation of the space charge of the ion beam are based on the conclusion that three step instability behavior is basic to the system considered by the author. These include reduction in the oscillation amplitude in the ion source, reduction of the coefficient of growth of instability in the ion beam by redesigning the beam optics, and finally, the reduction of secondary plasma oscillations. (Author)

Descriptors :   (*ION BEAMS, STABILITY), OSCILLATION, PLASMAS(PHYSICS), SPACE CHARGE, ION SOURCES, USSR

Subject Categories : Particle Accelerators
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE