Accession Number : AD0341055

Title :   GAMMA RADIATION EXPOSURE

Descriptive Note : Rept. for Mar-May 54,

Corporate Author : ARMY ELECTRONICS LABS FORT MONMOUTH NJ

Personal Author(s) : Dempsey, R.H. ; Larrick, baraff, G.A. ; Johnson, O.E.

Report Date : 16 MAR 1959

Pagination or Media Count : 44

Abstract : The initial- and residual-gamma radiation exposures resulting from the surface detonation of megaton-yield-range thermonuclear devices were recorded in order to provide data for the determination and evaluation of the gamma-radiation hazards associated with such bursts. The following types of dosimeters were used as gamma radiation detectors: photographic, chemical, and Radiac Set AN/PDR-39. Instrument shelters were installed on reef, beach, and land locations to enable differentiation between initial- and residual-gamma exposures. Gamma-radiation exposure measurements were made at known distances from ground zero for each of five shots. The initial-gamma data has limitations; the bulk of the data was completely lost due to the destruction of most of the initial-gamma stations. A comparison of the fragmentary initial-exposure data with scaled data shows reasonable agreement, although there is an insufficient quantity of data to analyze for effective mean free paths. (Author)

Descriptors :   *NUCLEAR EXPLOSIONS, *GAMMA RAYS, SURFACE BURST, HAZARDS, DOSIMETERS, INSTRUMENTATION, FALLOUT, GAMMA COUNTERS, RADIATION, RADIOGRAPHIC FILM.

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE