Accession Number : AD0774427

Title :   Energy-Integrated Legendre Coefficients for Photon Scattering from Maxwellian Electrons.

Descriptive Note : Final rept. Sep 73-Apr 73,

Corporate Author : AIR FORCE WEAPONS LAB KIRTLAND AFB N MEX

Personal Author(s) : Webster,Joseph B. , III ; Stephan,Brian G.

Report Date : FEB 1974

Pagination or Media Count : 75

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)

Descriptors :   *COMPTON SCATTERING, *SCATTERING CROSS SECTIONS, ELECTRON ENERGY, X RAYS, DISTRIBUTION FUNCTIONS, CURVE FITTING, COMPUTER PROGRAMS

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE