Accession Number : AD0679676

Title :   NEUTRON FLUENCE AND DOSE MEASUREMENTS WITH FISSION FOIL-LEXAN DETECTORS,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : Rago,Paul F. ; Goldstein,Norman ; Tochilin,Eugene

Report Date : 04 NOV 1968

Pagination or Media Count : 30

Abstract : A fission foil-Lexan detector system has been developed to monitor reactor neutrons. It is similar to the system based on counting fission gamma rays but has some advantages; i.e., permanently recorded tracks that can be read any time after exposure; integrated recording; microgram amounts of fissionable material needed; independence of fission product distribution; and the elimination of specialized gamma-ray counting equipment. Fission product damage tracks in the Lexan (or mica) are counted under an optical microscope. Fluence is determined from the sensitivity factor of 0.0000116 tracks/neutron-barn. Experimental results are given. (Author)

Descriptors :   (*NEUTRON DETECTORS, *FISSION NEUTRONS), MICA, PARTICLE TRAJECTORIES, FAST NEUTRONS, THERMAL NEUTRONS, NEUTRON CROSS SECTIONS, DOSIMETERS, FOILS(MATERIALS), GAMMA RAYS, NEPTUNIUM, URANIUM, THORIUM, PLUTONIUM, POLYESTER PLASTICS, TABLES(DATA)

Subject Categories : Nuclear Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE