Accession Number : ADD095298

Title :   Photon Cross Sections, Attenuation Coefficients, and Energy Absorption Coefficients from 10 keV to 100 GeV,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Hubbell, J H

Report Date : Aug 1969

Pagination or Media Count : 87

Abstract : This report updates and extends previous NBS tabulations. Section 1 contains the information of most immediate practial use: (a) a tabulation of the attenuation coefficient for 23 elements H1 to U92 between 10 keV and 10 MeV, and for air, water, and 7 elements up to 100 MeV. Section 2 contains detailed information on the predominant processes (photoelectric absorption, Compton scattering and pair production) and a brief discussion of other processes which combine to give the attenuation coefficient. Theoretical and experimental data are reviewed, and auxiliary tables and approximation formulas are given. Section 3 contains tabulations of cross sections for the predominant processes between 10 keV and 100 GeV for 23 elements and for 13 compounds and mixtures. (Author)

Descriptors :   *PHOTON CROSS SECTIONS, *ATTENUATION, *COEFFICIENTS, *ABSORPTION COEFFICIENTS, AIR, WATER, CHEMICAL ELEMENTS, PHOTONS, GAMMA RAYS, X RAYS, ENERGY, COMPTON SCATTERING, PHOTOELECTRICITY, TABLES(DATA)

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE