Electrostatic beam instabilities in a positive/negative ion plasma

Journal Article · Mon Dec 01 04:00:00 EST 1986 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.865751· OSTI ID:7163520

Galvez, M; Gary, S P

This paper examines the linear theory of electrostatic waves and instabilities in an unmagnetized, homogeneous Vlasov plasma. The first configuration considered is that of a stable plasma with three Maxwellian components: electrons, positive ions, and negative ions. The dispersion properties of the lightly damped ion modes are studied as a function of relative electron density and relative component temperatures. The second configuration considered is that of a tenuous electron--ion beam with drift speed v/sub 0//sub b/ streaming through a negative/positive ion plasma. If the beam is very tenuous, an electron beam instability satisfying ..omega../sub r/approx. =kv/sub 0//sub b/ is excited; if the beam is more dense, the instability becomes Buneman-like with parabolic dispersion. The thresholds and maximum growth rates of these instabilities are described as functions of the beam density and drift speed.

• Research Organization: Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 7163520
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 29:12; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107 -- Fusion Energy-- Plasma Research-- Instabilities
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANIONS
BEAMS
BOLTZMANN-VLASOV EQUATION
CATIONS
CHARGED PARTICLES
DAMPING
DIFFERENTIAL EQUATIONS
DISPERSION RELATIONS
ELECTRON BEAMS
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELECTROSTATICS
EQUATIONS
HOMOGENEOUS PLASMA
INSTABILITY
ION ACOUSTIC WAVES
ION WAVES
IONS
LEPTON BEAMS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE BEAMS
PLASMA
PLASMA INSTABILITY
PLASMA WAVES