Stability of Langmuir waves in developing ion-sound turbulence

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864516· OSTI ID:5507996

DuBois, D F; Pesme, D

It is shown, using weak turbulence theory, that Langmuir waves are stabilized by a nonresonant quasilinear scattering of Langmuir waves by ion-sound waves in the presence of a background of developing ion-sound turbulence. This effect, which prevents the conversion of ion-sound turbulence into Langmuir turbulence in this transient regime, was ignored in previous theories. The destabilizing effect of the so-called ''induced bremmsstrahlung'' of Langmuir waves as proposed by Nambu is furthermore shown to vanish exactly. The need for a renormalized theory in the case of steady-state ion-sound turbulence is discussed.

• Research Organization: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 and Institute for Theoretical Physics, Santa Barbara, California 93106
• OSTI ID: 5507996
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 27:1; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ION ACOUSTIC WAVES
ION WAVES
PLASMA
PLASMA WAVES
SCATTERING
STABILITY
TRANSIENTS
TURBULENCE