Accession Number : AD0711532

Title :   EXPERIMENTAL COMPARISON OF FALLOUT FIELD SIMULATION TECHNIQUES,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Maloney,Joseph C. ; Meredith,John L.

Report Date : JUL 1970

Pagination or Media Count : 130

Abstract : The specific objective of the work reported herein was to compare directly the results obtained from using the techniques and isotopes employed in experimental fallout field simulation and thus, to determine ground effects factors and dose-distance relationships that would affect decontamination operations. For the conditions of this experiment: The cumulative fractions of the infinite field exposure as a function of distance is the same for the circulating point source and spread source systems. Therefore each system can be used to experimental advantage, the results compared directly and applied to operational requirements in fallout fields. The air lift point source system with cobalt or cesium sources is an adequate technique for simulating fallout fields only for heights of detection above 25 feet. Ground roughness affects the exposure fields from circulating point and distributed particulate sources. For the Camp McCoy test area these factors are 0.90 for cobalt circulating point sources, 0.85 for cesium circulating point sources, and 0.57 for lanthanum tagged particles at 3 ft elevation. (Author)

Descriptors :   (*FALLOUT, SIMULATION), (*NUCLEAR WARFARE, RECOVERY), DECONTAMINATION, SHIELDING, RADIATION MEASURING INSTRUMENTS, TEST METHODS, COMPUTER PROGRAMS, CESIUM, COBALT, LANTHANUM

Subject Categories : Nuclear Warfare
      Radioactiv, Radioactive Wastes & Fission Prod

Distribution Statement : APPROVED FOR PUBLIC RELEASE