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Proceedings Paper

Fast magnetization of a low- to high-beta plasma beam
Author(s): Frank J. Wessel; Jin-Joo Song; Norman Rostoker; Gung Yur; Hafiz-ur Rahman
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Paper Abstract

We have studied the magnetization of a high-3 hydrogen-plasma beam injected into a vacuum transverse magnetic field (f3 plasma energy density/magnetic field energy density 1). Nominal parameters were: T1 1 eV Te 5 eV n 3 x io13 cm3 v 7 x io6 cm/s. tpulse 70 us B : 300 0. Plasma beam characteristics were measured for a wide beam a/p 35 and a downstream distance x 300 p1 where a is the beam radius x is the downstream distance and p1 is the ion gyroradius. We observe a brief initial state of diamagnetic propagation followed by (magnetized) propagation propagation is accompanied by beam compression iransverse to with as much as a factor of four increase in density and a slight drift of the beam in the direction of the ion Lorentz force. At high fields B 200. . 300 G the observed magnetic field diffusion time is much faster than calculated from classical Spitzer conductivity and is more of the order of the diffusion time based on Hall conductivity. 1.

Paper Details

Date Published: 1 April 1990
PDF: 9 pages
Proc. SPIE 1226, Intense Microwave and Particle Beams, (1 April 1990); doi: 10.1117/12.18584
Show Author Affiliations
Frank J. Wessel, Univ. of California/Irvine (United States)
Jin-Joo Song, Oklahoma State Univ. (United States)
Norman Rostoker, Univ. of California/Irvine (United States)
Gung Yur, Univ. of California/Riverside (United States)
Hafiz-ur Rahman, Univ. of California/Riverside (United States)

Published in SPIE Proceedings Vol. 1226:
Intense Microwave and Particle Beams
Howard E. Brandt, Editor(s)

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