Plasma current and conductivity effects on hose instability. Memorandum report

Technical Report · Thu Jan 26 04:00:00 EST 1984

OSTI ID:6756269

Lampe, M; Sharp, W; Hubbard, R

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.

• Research Organization: Naval Research Lab., Washington, DC (USA)
• OSTI ID: 6756269
• Report Number(s): AD-A-137549/2; NRL-MR-5140
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BEAM-PLASMA SYSTEMS
BEAMS
CHARGED PARTICLES
DISPERSION RELATIONS
EQUATIONS
FLUIDS
GASES
HOSE INSTABILITY
INSTABILITY
IONIZED GASES
PARTICLE BEAMS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SIMULATION
STABILITY