
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/A1 to ten to the ninth power/A1, for all elements Z=1 to 100. These tables are constructed from available stateoftheart theoretical data, including the Pirenne formulas wavefunctions for Z=2 to 6, nonrelativistic HarteeFock results by Cromer for Z=7 to 100, and a relativistic Kshell analytic expression for F(x,Z) by Bethe and Levinger for x10/A1 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 KleinNishina 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 terminallybonded hydrogen and for the H2 molecule, interpolated and extrapolated from values calculated by Stewart using KolosRoothaan 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