Diffuse plasma effects on the ion-hose instability

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860518· OSTI ID:6941118

Welch, D R; Hughes, T P ^[1]

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1. Mission Research Corporation, Albuquerque, New Mexico 87106 (United States)

The transverse stability of a relativistic electron beam focused by an ion channel in the presence of a diffuse background plasma is investigated. The linear behavior of the ion-hose and electron two-stream instabilities is treated analytically using a spread-mass model for the beam and ion channel and a cold-fluid model for the plasma. The electron two-stream instability is found to be quite weak. As the plasma neutralization radius approaches the beam radius, the ion-hose growth rate is reduced up to 50% before the model's assumptions break down. Particle-in-cell simulations confirm the linear analytic theory and show that the electron two-stream instability can saturate nonlinearly with little beam emittance growth.

• OSTI ID: 6941118
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 5:2; ISSN 0899-8221; ISSN PFBPEI
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
700350 -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
BEAM-PLASMA SYSTEMS
BEAMS
CHANNELING
COLD PLASMA
DISPERSION RELATIONS
ELECTRON BEAMS
HOSE INSTABILITY
INSTABILITY
INSTABILITY GROWTH RATES
ION CHANNELING
LEPTON BEAMS
PARTICLE BEAMS
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES