Accession Number:

ADA339028

Title:

Resistive Hose Instability in a Dichromatic Electron Beam

Descriptive Note:

Technical publication

Corporate Author:

NAVAL SURFACE WEAPONS CENTER WHITE OAK LAB SILVER SPRING MD

Personal Author(s):

Report Date:

1984-08-01

Pagination or Media Count:

30.0

Abstract:

Stability properties of the resistive hose instability are investigated for a self-pinched dichromatic electron beam propagating through a collisional plasma channel. The equilibrium and stability analysis is carried out for the electron distribution function in which beam electrons have two energy components. The beam density is assumed to be a Bennett profile. A closed algebraic dispersion relation of the resistive hose instability is obtained for a dichromatic beam, by making use of the energy group model. Numerical investigation of the dispersion relation is carried out for a ultra- relativistic electron beam. Unstable growth of the resistive hose instability along the beam frame coordinate is calculated. For an appropriate choice of the physical parameters, it is shown that the growth rate of instability in a dichromatic beam can be one third of that in a monochromatic beam, thereby tremendously increasing the beam pulse length for a stable propagation.

Subject Categories:

  • Particle Accelerators

Distribution Statement:

APPROVED FOR PUBLIC RELEASE