Accession Number : AD0436311

Title :   ANGULAR DISTRIBUTION OF SKYSHINE RADIATION AT THE SURFACE OF A PLANE OF FALLOUT CONTAMINATION,

Corporate Author : TECHNICAL OPERATIONS INC BURLINGTON MASS

Personal Author(s) : Starbird,Albert W. ; Batter,John F.

Report Date : MAR 1964

Pagination or Media Count : 37

Abstract : An experimental program was conducted to determine the angular distribution of the air-scattered component of gamma radiation (skyshine) at the surface of a plane of fallout contamination. Measurements were made by placing a radiation detector in a vertical collimator recessed flush with the ground surface and placing cobalt60 sources on the ground along a line extending from the center of the collimator to a radius of about 40 ft to simulate fallout contamination. Detector depth in the collimator was varied to measure skyshine within the cone formed by the collimator opening and the detector at given solid angle fractions for source positions extending from the collimator lip to the 40-ft radius. The experimentally-determined results of this program and of other investigators were compared with theoretical calculations. (Author)

Descriptors :   (*FALLOUT, DISTRIBUTION), (*RADIATION MEASURING INSTRUMENTS, FALLOUT), ANGLE OF ARRIVAL, RADIOACTIVE CONTAMINATION, RADIATION MONITORS, DETECTORS, DOSE RATE, SCATTERING, COLLIMATORS, GAMMA RAYS, NUCLEAR PHYSICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE