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):

Report Date:

1984-01-26

Pagination or Media Count:

61.0

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

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE