Stray neutron interference with beta/gamma thermoluminescent dosimetry

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Radiation Protection Management; (United States)

OSTI ID:5322156

Neff, R D; Schlapper, G A; Bliss, J L ^[1]

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1. Radiological Health Engineering Program, Nuclear Engineering Dept., Texas A and M Univ., College Station, TX (US)

This paper reports that general beta/gamma whole-body dosimetry utilizing LiF (TLD-100 containing 7.5% Li-6 and 92.5% Li-7) can overestimate the total dose equivalent received by personnel in the presence of low levels of scatter neutron radiation. The potential for such an overestimate was evaluated by exposing LiF TLDs to bare and unmoderated PuBe spectra and to degraded fission neutrons. Bare and lightly moderated ({alpha}, n) neutron sources were found to not severely interfere with beta/gamma exposure estimates; however, overestimates can occur if supplemental neutron dose equivalent measurements are added to the indicated beta/gamma results without accounting for the neutron response of the beta/gamma badge. More fully moderated PuBe spectra and degraded fission neutron spectra were found to produce significant over-responses in indicated beta/gamma dose equivalent with the exact degree of over-response being subject to the actual neutron spectra in the area.

• OSTI ID: 5322156
• Journal Information: Radiation Protection Management; (United States), Journal Name: Radiation Protection Management; (United States) Vol. 1:3; ISSN 0740-0640; ISSN RPMAE
• Country of Publication: United States
• Language: English

Related Subjects

440102 -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
560101* -- Biomedical Sciences
Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-)
61 RADIATION PROTECTION AND DOSIMETRY
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARYONS
BERYLLIUM COMPOUNDS
BETA SPECTRA
DOSEMETERS
DOSIMETRY
ELEMENTARY PARTICLES
EXTERNAL IRRADIATION
FERMIONS
FLUORIDES
FLUORINE COMPOUNDS
GAMMA SPECTRA
HADRONS
HALIDES
HALOGEN COMPOUNDS
INTERFERENCE
IRRADIATION
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
LUMINESCENT DOSEMETERS
MEASURING INSTRUMENTS
NEUTRONS
NUCLEONS
PERSONNEL DOSIMETRY
PLUTONIUM COMPOUNDS
SPECTRA
THERMOLUMINESCENT DOSEMETERS
TRANSURANIUM COMPOUNDS
WHOLE-BODY IRRADIATION