Work

Electron-hose instability in the ion-focused regime

Year: 1991

Type: article

Abstract: A relativistic electron beam propagating through an ummagnetized, underdense plasma exhibits a transverse instability due to the coupling of the beam centroid to plasma electrons at the ``ion-channel'' edge. The transverse wake field corresponding to this ``electron-hose'' effect is calculated in the ``frozen-field'' approximation for a low-current, cylindrical beam in a radially infinite plasma. The asymptotic growth of beam-centroid oscillations is computed, and the growth length is found to be very rapid, indeed much less than the betatron period of the beam. Results for a radially finite plasma and for a slab beam are noted. Damping and saturation mechanisms are discussed.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.67.991

Authors: David H. Whittum, William M. Sharp, Simon S. Yu, Martin Lampe, Glenn Joyce

Institutions: Lawrence Berkeley National Laboratory, University of California, Berkeley, Lawrence Livermore National Laboratory, United States Naval Research Laboratory

Language: English

Topic: Particle accelerators and beam dynamics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Defense Advanced Research Projects Agency

Awards: G1398330795, G1643223109, G193590374