Implicit moment PIC-hybrid simulation of collisional plasmas
A self-consistent scheme was developed to model electron transport in evolving plasmas of arbitrary classial collisionality. The electrons and ions are treated as either ultiple Eulerian fluids or collisional particles-in-cell. Particle suprathermal electrons scatter off ions, and drag against fluid background thermal electrons. The background electros undergo ion friction, thermal coupling, and bremsstrahlung. The components accelerate in electric field obtained by the Implicit Moment Method, which permits ..delta..t>>..omega../sup -1//sub p/ and ..delta..x>>lambda/sub p/-allowing the treatment of problems 10/sup 2/-10/sup 3/ times more complex than those accessible with older explicit methods. The fluid description for the background plasma components permits the modeling of transport in systems spanning more than a 10/sup 7/-fold change in density, and encompassing contiguous collisional and collisionless regions. Results are presented from application of the scheme to the modeling of CO/sub 2/ laser-generated suprathermal electron transport in expanding thin foils, and in multi-foil target configurations.
- Research Organization:
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
- OSTI ID:
- 5511224
- Journal Information:
- J. Comput. Phys.; (United States), Journal Name: J. Comput. Phys.; (United States) Vol. 51:3; ISSN JCTPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104 -- Metals & Alloys-- Physical Properties
640420* -- Fluid Physics-- Properties & Structure of Fluids-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHARGED-PARTICLE TRANSPORT
COLLISIONAL PLASMA
COLLISIONS
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELECTRON-ION COLLISIONS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FOILS
GOLD
ION COLLISIONS
LASER RADIATION
LEPTONS
METALS
PHOTOCONDUCTIVITY
PHYSICAL PROPERTIES
PLASMA
PLASMA SIMULATION
RADIATION TRANSPORT
RADIATIONS
SIMULATION
TRANSITION ELEMENTS