Accession Number : ADA137549

Title :   Plasma Current and Conductivity Effects on Hose Instability.

Descriptive Note : Memorandum rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Lampe,M ; Sharp,W ; Hubbard,R

PDF Url : ADA137549

Report Date : 26 Jan 1984

Pagination or Media Count : 61

Abstract : Hose instability dispersion relations are derived for a relativistic beam propagating in weakly ionized gas, which include a self-consistent treatment of the spatial and temporal evolution of plasma conductivity and plasma current. In some regimes the results are dramatically different from these found previously for a beam propagating in a fixed conductivity channel. For example, the hose growth rate is found to decrease with increasing beam I sub b, for a beam propagating in initially neutral gas, even though the plasma return current fraction increases rapidly with I sub b. As another example, it is found that an externally driven discharge current can completely eliminate hose instability in a fixed conductivity channel, but causes only a weak decrease in growth rate when the plasma conductivity is modeled self-consistently. (Author)

Descriptors :   *Charged particles, *Particle beams, *Dispersion relations, *Plasmas(Physics), Hoses, Ionized gases, Stability, Conductivity, Computations, Perturbations, Simulation, Equations

Subject Categories : Nuclear Physics & Elementary Particle Physics
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE