Kinetic Theory of Electron-Plasma and Ion-Acoustic Waves in Nonuniformly Heated Laser Plasmas

Journal Article · Sun Mar 01 00:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.2322· OSTI ID:664833

Afeyan, B B ^[1]; Chou, A E ^[2]; Matte, J P ^[3]; Town, R P ^[4]; Kruer, W J ^[5]

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1. University of California, Davis-Livermore, Livermore, California 94550 (United States)
2. University of California, Los Angeles, Los Angeles, California 90024 (United States)
3. INRS Energie-Materiaux, Varennes, Quebec, J0L 2P0 (CANADA)
4. LLE, University of Rochester, Rochester, New York 14623 (United States)
5. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

Using Fokker-Planck simulations, we have studied the evolution of different charge state plasmas heated by lasers having transverse spatial modulations (speckle patterns) and hot spots. The kinetic response of the plasma is computed using the resulting strongly non-Maxwellian electron velocity distribution functions. Significant reductions in the electron plasma wave Landau damping rates and large modulations in the local ion acoustic frequencies are found which impact the behavior of all parametric instabilities in such plasmas. Various experimental consequences are given. {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Univ. of Rochester, NY (United States)
• DOE Contract Number: FC03-92SF19460; W-7405-ENG-48
• OSTI ID: 664833
• Journal Information: Physical Review Letters, Vol. 80, Issue 11; Other Information: PBD: Mar 1998
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
LASER-PRODUCED PLASMA
ELECTRON PLASMA WAVES
ION ACOUSTIC WAVES
FOKKER-PLANCK EQUATION
SIMULATION
MODULATION
DISTRIBUTION FUNCTIONS
ELECTRONS
VELOCITY
LANDAU DAMPING
PLASMA INSTABILITY
PLASMA HEATING