Electrostatic two-stream instability driven by slab-shaped and cylindrical beams injected into plasmas

Journal Article · Fri Apr 01 00:00:00 EST 1988 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.866767· OSTI ID:5289621

Galvez, M; Borovsky, J E

An electrostatic linear analysis is performed for a finite-width electron or ion beam streaming along a strong magnetic field in the presence of a homogeneous background plasma. The linear fluid equations have been solved as a boundary value problem for planar and cylindrical beam shapes, and the dispersion which results as an eigenvalue problem is solved numerically without approximation as a function of the electron beam width. The solution gives unstable modes for any beam width and the dispersion relation shows different branches. There is a branch in both configurations that represents the most unstable mode, and the wavelength of this unstable mode for the cylindrical beam is larger than the corresponding wavelength for the most unstable mode of the slab-shaped beam.

• Research Organization: Space Plasma Physics Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5289621
• Journal Information: Phys. Fluids; (United States), Vol. 31:4
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
TWO-STREAM INSTABILITY
HOMOGENEOUS PLASMA
ELECTRON BEAM INJECTION
ION BEAM INJECTION
BOUNDARY-VALUE PROBLEMS
CYLINDRICAL CONFIGURATION
DISPERSION RELATIONS
EIGENVALUES
ELECTROSTATICS
MAGNETIC FIELDS
NUMERICAL SOLUTION
SLABS
WIDTH
BEAM INJECTION
CONFIGURATION
DIMENSIONS
INSTABILITY
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
700107* - Fusion Energy- Plasma Research- Instabilities