Accession Number : ADD095062

Title :   Atomic Form Factors, Incoherent Scattering Functions, and Photon Scattering Cross Sections,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Hubbell, J H ; Veigele, Wm J ; Briggs, E A ; Brown, R T ; Cromer, D T

Report Date : Jan 1975

Pagination or Media Count : 75

Abstract : Tabulations are presented of the atomic form factor, F(x,Z), and the incoherent scattering functions, S(x,Z), for values of x (=sin (0/2)/tau) from .005/A-1 to ten to the ninth power/A-1, for all elements Z=1 to 100. These tables are constructed from available state-of-the-art theoretical data, including the Pirenne formulas wavefunctions for Z=2 to 6, non-relativistic Hartee-Fock results by Cromer for Z=7 to 100, and a relativistic K-shell analytic expression for F(x,Z) by Bethe and Levinger for x10/A-1 for all elements distribution measurements. Tables of coherent (Rayleigh) and incoherent (Compton) total scattering cross, obtained by numerical integration over combinations of F2(x,Z) with the Thomson formula and S(x,Z) with the Klein-Nishina formula, respectively, are presented for all elements Z=1 to 100, for photon energies 100 eV (tau=124 A) to 100 MeV (0.000124 A). the incoherent scattering cross are presented for the special cases of terminally-bonded hydrogen and for the H2 molecule, interpolated and extrapolated from values calculated by Stewart using Kolos-Roothaan wavefunctions. (Author)

Descriptors :   *PHOTON CROSS SECTIONS, *SCATTERING CROSS SECTIONS, *INCOHERENT SCATTERING, KLEIN NISHINA FORMULA, THEORY, DISTRIBUTION, MEASUREMENT, TABLES(DATA), GAMMA RAYS, X RAYS, TABULATION PROCESSES, RAYLEIGH SCATTERING

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE