Behavior of relativistic beams undergoing hose motion in a plasma channel

Abstract

A 6-MeV electron beam with current of 100-200 A was used to study the hose instability of a relativistic electron stream. The growth rates of the instability were experimentally determined, and measured values displayed the trends predicted by theoretical analyses. The magnitude and position of the maximum growth rate as related to the perturbing frequency and plasma-current decay times agreed well with the predictions of both the rigid and nonrigid beam models. The general dependence of growth rate on the ratio of channel radius to beam radius was observed.

Powerful relativistic electron beams in a plasma and in a vacuum (theory)

“…The hose and the sausage instabilities were both discussed. The experimental observation of the hose instability was reported by Moses, Bauer and Winter [ 70].…”

Resistive hose growth of intense ion beams propagating in air

“…Intense charged particle beams propagating in a background gas are known to be susceptible to the resistive hose instability. This instability has been extensively studied over the past 30 years [1][2][3][4][5][6][7][8][9][10][11][12][13], and transport of the beam in reduced-density channels has been studied as an aid to extending transport distances [14 -20].…”

Observations of low-frequency oscillations during relativistic-electron-beam-plasma interactions

“…The resistive-hose instability, which is another cause of low-frequency transverse oscillations of an REB propagating in a plasma channel created by the beam itself, has been experimentally studied (Briggs et al 1976;Lauer et al 1978;Moses, Bauer & Winter 1973) in the self-pinched configuration without any externally applied magnetic guide field. Theoretical models of the instability for a self-pinched relativistic electron beam have been given by various researchers (Lee 1978;Sharp, Lampe & Uhm 1982).…”