Accession Number : ADA191599

Title :   Propagation of Neutralized Ion Beams.

Descriptive Note : Final technical rept. 1 Oct 85-31 Dec 87,

Corporate Author : CALIFORNIA UNIV IRVINE DEPT OF PHYSICS

Personal Author(s) : Fisher, Amnon ; Rostoker, Norman

PDF Url : ADA191599

Report Date : Dec 1987

Pagination or Media Count : 13

Abstract : The propagation of plasmoids (neutralized beams) in a vacuum transverse magnetic field has been studied in the UCI laboratory for several years. The most recent experiments are aimed at studying the plasmoid propagation dynamics and losses in the presence of a background, magnetized plasma which is intended to short the induced polarization electric field and stop the beam. Preliminary results indicate that the beam propagation losses increase with the background plasma density. Principal diagnostics include: magnetically insulated Faraday cups, floating potential probes, calorimeters, microwave interferometer, and thermal-witness paper. Experiments in the near future will use an improved accelerator and transverse-field coil system which allows higher energy, 500 keV, higher current density plasmoids to be studied; this generator will improve the beam uniformity and angular divergence to allow beam propagation for up to five meters and permit study of losses from surface erosion. Keywords: Plasmoids; Propagation; Magnetic field.

Descriptors :   *PARTICLE BEAMS, CALORIMETERS, ELECTRIC FIELDS, ELECTROMAGNETIC WAVE PROPAGATION, ENERGY, EROSION, ION BEAMS, LOSSES, MAGNETIC FIELDS, MAGNETIZATION, MICROWAVE INTERFEROMETRY, PLASMAS(PHYSICS), POLARIZATION, PROBES, SURFACES, TRANSVERSE, VACUUM, NEUTRAL, CROSSED FIELD DEVICES

Subject Categories : Particle Accelerators
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE