Electron-hose instability in the ion-focused regime

Journal Article · Mon Aug 19 04:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.991· OSTI ID:5334457

Whittum, D H ^[1]; Sharp, W M; Yu, S S ^[2]; Lampe, M; Joyce, G ^[3]

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1. Lawrence Berkeley Laboratory, University of California, Berkeley, California (USA)
2. Lawrence Livermore National Laboratory, University of California, Livermore, California (USA)
3. Naval Research Laboratory, Washington, D.C. (USA)

A relativistic electron beam propagating through an ummagnetized, underdense plasma exhibits a transverse instability due to the coupling of the beam centroid to plasma electrons at the ion-channel'' edge. The transverse wake field corresponding to this electron-hose'' effect is calculated in the frozen-field'' approximation for a low-current, cylindrical beam in a radially infinite plasma. The asymptotic growth of beam-centroid oscillations is computed, and the growth length is found to be very rapid, indeed much less than the betatron period of the beam. Results for a radially finite plasma and for a slab beam are noted. Damping and saturation mechanisms are discussed.

• DOE Contract Number: AC03-76SF00098; W-7405-ENG-48
• OSTI ID: 5334457
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:8; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430000* -- Particle Accelerators
640410 -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASYMPTOTIC SOLUTIONS
BEAM-PLASMA SYSTEMS
BEAMS
CHARGED PARTICLES
CONFIGURATION
COUPLING
CYLINDRICAL CONFIGURATION
DAMPING
ELECTRON BEAMS
EQUILIBRIUM
FOCUSING
HOSE INSTABILITY
INSTABILITY
INSTABILITY GROWTH RATES
IONS
LEPTON BEAMS
PARTICLE BEAMS
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
RELATIVISTIC PLASMA
SATURATION