Accession Number : AD0603414

Title :   TRANSMISSION OF GAMMA RADIATION THROUGH THIN, FINITE SLABS,

Corporate Author : TECHNICAL OPERATIONS INC BURLINGTON MASS

Personal Author(s) : Barrett,Matthew J. ; Barch,William E. ; MacNeil,RobertL.

Report Date : MAY 1964

Pagination or Media Count : 48

Abstract : The shielding of gamma radiation -- at photon energies where the Compton scatter process is dominant -- results in a transmitted beam that is largely composed of scattered photons. An approximate formula was developed through experiment to calculate the scattered radiation and therefore determine the exact transmission, i.e., dose build-up factor (B), for thin shields in the range of photon energies from 0.6 to 2 MeV. The results of the experiment also gave rise to a simple method of measuring any microscopic scattering cross section by an array of detectors without loss of the definition of the scattering angle. (Author)

Descriptors :   (*GAMMA RAYS, ABSORPTION), (*SHIELDING, NUCLEAR SCATTERING), (*PHOTONS, COMPTON SCATTERING), NUCLEAR CROSS SECTIONS, RADIATION MEASURING INSTRUMENTS, COBALT, CESIUM, RADIOACTIVE ISOTOPES, MATHEMATICAL ANALYSIS, CONCRETE, THICKNESS, IRON

Distribution Statement : APPROVED FOR PUBLIC RELEASE