Absorption of intense microwaves and ion acoustic turbulence due to heat transport

Conference · Wed Oct 05 04:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:6597100

De Groot, J S; Liu, J M ^[1]; Matte, J P ^[2]; Perdue, D ^[1]; Johnston, T W ^[2]; Drake, R P ^[3]; Estabrook, K G; Kruer, W L; Langdon, A B ^[4]; Bychenkov, V; Uryupin, S; Silin, V ^[5]

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1. Department of Applied Science and Plasma Research Group, University of California, Davis, California 95616 (United States)
2. INRS-Energie (Canada)
3. Plasma Physics Research Institute and Department of Applied Science, University of California, Davis and Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
4. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
5. Lebedev Institute (USSR)

Measurements and calculations of the inverse bremsstrahlung absorption of intense microwaves are presented. The isotropic component of the electron distribution becomes flat-topped in agreement with detailed Fokker-Planck calculations. The plasma heating is reduced due to the flat-topped distributions in agreement with calculations. The calculations show that the heat flux at high microwave powers is very large, q[sub max][approx]0.3 N[sub e]v[sub e]T[sub e]. A new particle model to claculate the heat transport inhibition due to ion acoustic turbulence in ICF plasmas is also presented. One-dimensional PIC calculations of ion acoustic turbulence excited due to heat transport are presented. The 2-D PIC code is presently being used to perform calculations of heat flux inhibition due to ion acoustic turbulence. [copyright] 1994 [ital American] [ital Institute] [ital of] [ital Physics]

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6597100
• Report Number(s): CONF-931048--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 318:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ABSORPTION
ARGON
BREMSSTRAHLUNG
DISTRIBUTION FUNCTIONS
ELECTROMAGNETIC RADIATION
ELECTRON TEMPERATURE
ELEMENTS
ENERGY TRANSFER
FLUIDS
FUNCTIONS
GASES
HEAT TRANSFER
HIGH VACUUM
ION ACOUSTIC WAVES
ION WAVES
LASER-PRODUCED PLASMA
MICROWAVE RADIATION
NONMETALS
PLASMA
PLASMA WAVES
RADIATIONS
RARE GASES
SORPTION
TURBULENCE