Fast scheme for photon-Maxwellian electron cross sections

Journal Article · Tue Jan 31 23:00:00 EST 1984 · J. Comput. Phys.; (United States)

DOI:https://doi.org/10.1016/0021-9991(84)90045-7· OSTI ID:6583988

Wienke, B R; Lathrop, B L

A fast and accurate method for computing temperature-corrected photon-Maxwellian electron cross sections with distribution averaged electron energies and scatterig angles in presented. Use is made of the covariant (frame independent) picture of scattering for relativistic electrons. The scheme is motivated and detailed, predictions are obtained an compared with exact values and appropriate limiting forms which retain the Thomson and Klein-Nishina cross section structure are also recovered. The method is amenable to further pointwise (Monte Carlo) or multigroup (S/sub n/) cross section processing. A two parameter fit to the relativistic cross sections is also described that resembles the Klein-Nishina formula in structure and can be used to generate temperature corrections within existing static electron algorithms.

• Research Organization: Computing Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6583988
• Journal Information: J. Comput. Phys.; (United States), Journal Name: J. Comput. Phys.; (United States) Vol. 53:2; ISSN JCTPA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOLTZMANN STATISTICS
COMPTON EFFECT
CROSS SECTIONS
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ENERGY RANGE
INTERACTIONS
KERNELS
KLEIN-NISHINA FORMULA
MONTE CARLO METHOD
NEUTRAL-PARTICLE TRANSPORT
PARTICLE INTERACTIONS
PHOTON TRANSPORT
PHOTON-ELECTRON INTERACTIONS
PHOTON-LEPTON INTERACTIONS
RADIATION TRANSPORT
RELATIVISTIC RANGE
SCATTERING
TEMPERATURE EFFECTS