
Accession Number : ADA018365
Title : Transport Techniques for Describing the Elastic Scattering of Energetic Electrons.
Descriptive Note : Interim rept.,
Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C
Personal Author(s) : Strickland,D. J. ; Bernstein,I. B.
Report Date : NOV 1975
Pagination or Media Count : 32
Abstract : An equation of transfer for elastic scattering, and the corresponding FokkerPlanck equation are solved for strongly forwardpeaked scattering. The cross sections employed are appropriate to kilovolt electrons scattering off light nuclei. Results are shown for which the backscattered flux calculated with the transfer equation is sensitive to the cross section at large angles, indicating that single largeangle scattering can be important even though the cross section for it many contribute but a small fraction of the total cross section. Solutions of the FokkerPlanck equation agree well with those of the counterpart integral equation, provided sufficient scatters are present to make multiple small angle scattering dominant. For thin systems, the FokkerPlanck results for backscatter fall below the integralequation results. The integral equation of transfer has been solved both numerically and in terms of its eigenfunctions and eigenvalues. Solutions by the two distinct methods agree to at least three significant places, thereby establishing the accuracy of the applied numerical techniques.
Descriptors : *Electron transport, *Elastic scattering, Transfer functions, Backscattering, Transformations(Mathematics), Angles, Cross sections, Fokker Planck equations, Integral equations, Eigenvectors
Subject Categories : Nuclear Physics & Elementary Particle Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE