Energy-Integrated Legendre Coefficients for Photon Scattering from Maxwellian Electrons.
Abstract
NSThe report presents energy-integrated coefficients for a Legendre expansion of the angular dependence of the differential cross section which describes Compton scattering from nonstationary electrons. The electrons are assumed to have a Maxwellian velocity distribution. An analytic fit is presented for the dependence of these coefficients on photon energy and electron distribution temperature. If a Legendre expansion of the scattering kernel in a transport calculation is used, these coefficients may be used to aid in determining the degree of expansion required for the particular situations to be encountered in the problem. The fits presented will yield integrated coefficients whose accuracy is good to approximately 1% for photon energies between 0 and 1000 keV, and for electron distribution temperatures between 0 and 20 keV. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1974
- Accession Number
- AD0774427
Entities
People
- Brian G. Stephan
- Joseph B. Webster Iii
Organizations
- Air Force Research Laboratory