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1 April 1990 Fast magnetization of a low- to high-beta plasma beam
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Proceedings Volume 1226, Intense Microwave and Particle Beams; (1990)
Event: OE/LASE '90, 1990, Los Angeles, CA, United States
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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);


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