Simulations of Axisymmetric Erosion in IFR-Transported Beams

Abstract

Erosion rates for relativistic electron beam propagating through low density plasma channel in the ion-focused regime are computed via axisymmetric particle simulation. We find steady-state inductive (ohmic) erosion rates that are in quantitative agreement with new theoretical results which correctly account for the relativistic dynamics of electrons at the beam head. In cases where the finite emittance of the beam is expected to be the dominant loss mechanism, the beam does not develop steady-state erosion, as suggested by previous analyses. Asymptotically, such a beam is characterized by a low emittance propulation at the beam head, a long rise length, and an erosion rate that tends toward zero. Keywords: Relativistic electron beam; Hose instability; IFR transport; Particle simulation code; Beam propagation code.

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Document Details

Document Type
Technical Report
Publication Date
Feb 21, 1989
Accession Number
ADA205882

Entities

People

  • Glenn Joyce
  • J. Krall
  • Khanh Nguyen

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Axisymmetric
  • Coordinate Systems
  • Corporations
  • Directed Energy Weapons
  • Dynamics
  • Electron Beams
  • Electron Density
  • Electrons
  • Equations
  • High Energy
  • Low Density
  • Military Research
  • Physics
  • Physics Laboratories
  • Standards
  • Steady State

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics