COMPARISON OF MONTE CARLO CALCULATION AND EXPERIMENTAL MEASUREMENTS FOR GAMMA-RAY AIR SCATTERING

Technical Report · Fri Aug 01 04:00:00 EDT 1958

OSTI ID:4200682

Dawson, D M; Kirk, W L; Shiel, V W; Johnson, W P

Convair has reported an experimental determination of the angular distribution and energy spectrum of air scattered gamma-rays from a cobalt-60 source. Lynch, et. al., reported the results of a Monte Carlo study of gamma-ray air scattering from a monoenergetic beam source which was performed at WADC on the Remington Rand 1103 digital computer. This program was modified to perform similar calculations for a monoenergetic, point isotropic source. The code was further modified to print separately photon currents due to first collisions, to second collisions, to third colllsions, and to all higher order collisions. The angular distribution and energy spectra as reported by Convair are compared with the results of Lynch, et. al., and with results obtained with the modified program. In general, the agreement between theory and experiment is within a factor of two. (auth)

• Research Organization: Wright Air Development Center. Propulsion Lab., Wright- Patterson AFB, Ohio
• NSA Number: NSA-14-006855
• OSTI ID: 4200682
• Report Number(s): WADC-TN-58-256; AD-206051
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AIR
ANGULAR DISTRIBUTION
BEAMS
COBALT 60
GAMMA RADIATION
GAMMA SOURCES
MEASURED VALUES
MONTE CARLO METHOD
PHYSICS
PROGRAMMING
SCATTERING
SPECTRA