A new neutron dose equivalent meter

Conference · Mon Nov 01 00:00:00 EST 1993

OSTI ID:10193986

Olsher, R H; Hsu, Hsiao-Hua

The design and performance of a new neutron dose equivalent meter or ``rem meter`` are described. Key design elements include a 6.38-inch diameter polyethylene moderator sphere loaded with Tungsten Carbide powder to 5% tungsten by weight, and a 2-mil thick cadmium foil located at a radius of 5 cm. A detailed response function for the new rem meter (dubbed the Model 652) was derived over the neutron energy range from thermal to 20 MeV using Monte Carlo transport techniques. Compared with the standard Eberline NRD rem mete, the new design is about 1.5 kg lighter, and is 28% more sensitive per unit dose of Cf-252. It is shown that for a large variety of standard and operational neutron spectra, the model 652 rem meter provides a response accuracy of {plus_minus}15%.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 10193986
• Report Number(s): LA-UR-93-3737; CONF-931107-9; ON: DE94002688
• Resource Relation: Conference: 1993 IEEE nuclear science symposium and medical imaging conference,San Francisco, CA (United States),2-5 Nov 1993; Other Information: PBD: 1993
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
TISSUE-EQUIVALENT DETECTORS
DESIGN
PERFORMANCE
DOSE EQUIVALENTS
MODERATORS
POLYETHYLENES
TUNGSTEN CARBIDES
MATERIALS
CADMIUM
FOILS
RESPONSE FUNCTIONS
MONTE CARLO METHOD
NEUTRON DOSIMETRY
RADIATION PROTECTION
560101
440103
DOSIMETRY AND MONITORING
NUCLEAR SPECTROSCOPIC INSTRUMENTATION