Accession Number : AD0711531

Title :   DORF-I, GAMMA-RAY SPECTROGRAPH SHIELDING STUDIES.

Descriptive Note : Memorandum rept.,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Van Antwerp,Walter R. ; Cash,Bernard L. ; Hendricks,William D. ; Gardner,Alvis H.

Report Date : JUL 1970

Pagination or Media Count : 42

Abstract : A gamma-ray spectrograph, designed for use in very intense radiation fields generated by pulsed sources, has been tested in the mixed gamma-ray and neutron field of the Harry Diamond Laboratories pulsed reactor, DORF. This memorandum report presents details of the instrumentation used, results on the effectiveness of the mixed field shield-collimator design, and proof of the feasibility of gamma-ray spectrum measurements in either pulsed or steady-state reactor fields. Counting, rate-meter, and analog circuits each performed satisfactorily. However, the shield-collimator design was not satisfactory and it was necessary to make spectrum measurements with eight inches of water interposed between the spectrograph and the reactor core. Necessary changes in the shielding and collimator configurations are discussed. (Author)

Descriptors :   (*NUCLEAR RADIATION SPECTROMETERS, SHIELDING), (*GAMMA RAY SPECTRA, MEASUREMENT), SPECTROGRAPHIC CAMERAS, COLLIMATORS, NUCLEAR REACTORS, BACKGROUND, GAMMA RAY SPECTROSCOPY

Subject Categories : Nuclear Instrumentation
      Nuclear Radiation Shield, Protection & Safety

Distribution Statement : APPROVED FOR PUBLIC RELEASE