Quantitative explanation of oscillating two-stream and parametric decay instabilities in terms of wave pressure

Journal Article · Wed Aug 01 04:00:00 EDT 1984 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864859· OSTI ID:6853917

Mulser, P; Giulietti, A; Vaselli, M

The exact equations of motion for the oscillating two-stream and parametric decay instabilities (OTSI and PDI) are derived in the reference system co-moving with the ion-acoustic disturbance and their physical interpretation in terms of wave pressure is presented. It is found that OTSI and PDI behave differently: whereas in the OTSI the ponderomotive force is shifted by -..pi../2 with respect to the disturbance, in the PDI case it is in phase with the propagating ion wave, as in stimulated Brillouin and Raman scattering. The decisive role of the pressure of an electrostatic wave is stressed.

• Research Organization: Institut fur Angewandte Physik, Technische Hochschule, 6100 Darmstadt, Federal Republic of Germany
• OSTI ID: 6853917
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 27:8; 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
ANALYTICAL SOLUTION
BRILLOUIN EFFECT
COHERENT SCATTERING
DECAY INSTABILITY
DIFFERENTIAL EQUATIONS
DISTURBANCES
EQUATIONS
EQUATIONS OF MOTION
INSTABILITY
ION ACOUSTIC WAVES
ION WAVES
PARAMETRIC INSTABILITIES
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA MICROINSTABILITIES
PLASMA WAVES
RAMAN EFFECT
SCATTERING
TWO-STREAM INSTABILITY
WAVE FORCES