Decay instability of plasma waves into electron Bernstein waves in a laser-produced plasma

Journal Article · Mon Nov 01 04:00:00 EST 1982 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.26.2854· OSTI ID:6361451

Sharma, O P

In the presence of self-generated magnetic fields in laser-produced plasmas, the mode-converted plasma waves near the critical layer decay parametrically into electron Bernstein waves and Langmuir sidebands. The threshold for this instability is easily exceeded at the presently employed power densities and the growth rate above the threshold ..gamma../sub 0/approx. =0.06..omega../sub c/v/sub o//v/sub e/ for typical plasmas; v/sub o/ and v/sub e/ are the oscillatory and thermal speeds of electrons and ..omega../sub c/ is the cyclotron frequency. The electron cyclotron turbulence thus generated may have significant consequences on the energy deposition rate.

• Research Organization: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 6361451
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 26:5; ISSN PLRAA
• 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
ABSORPTION
BERNSTEIN MODE
CYCLOTRON RESONANCE
DECAY INSTABILITY
ELECTRON CYCLOTRON-RESONANCE
ENERGY ABSORPTION
INSTABILITY
LASER-PRODUCED PLASMA
MAGNETIC FIELDS
OSCILLATION MODES
PLASMA
PLASMA INSTABILITY
PLASMA WAVES
RESONANCE
TURBULENCE