Fast magnetization of a low- to high-beta plasma beam

Frank J. Wessel; Jin-Joo Song; Norman Rostoker; Gung Yur; Hafiz-ur Rahman

doi:10.1117/12.18584

1 April 1990 Fast magnetization of a low- to high-beta plasma beam

Frank J. Wessel, Jin-Joo Song, Norman Rostoker, Gung Yur, Hafiz-ur Rahman

Proceedings Volume 1226, Intense Microwave and Particle Beams; (1990) https://doi.org/10.1117/12.18584
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

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.

Citation Download Citation

Frank J. Wessel, Jin-Joo Song, Norman Rostoker, Gung Yur, and Hafiz-ur Rahman "Fast magnetization of a low- to high-beta plasma beam", Proc. SPIE 1226, Intense Microwave and Particle Beams, (1 April 1990); https://doi.org/10.1117/12.18584

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