Beta skin dose determination using TLDs, Monte-Carlo calculations, and extrapolation chamber
Journal Article
·
· Health Physics; (USA)
- NRC-Negev, Beer-Sheva (Israel)
The beta doses produced by {sup 90}Sr-Y and {sup 204}Tl beta sources were determined using three methods: Monte-Carlo calculations, measurements with TLDs, and measurements with an extrapolation chamber. Excellent agreement was obtained by all three methods, except a TLD nonlinear response to beta s was observed, which gives doses approximately 20% high for the {sup 90}Sr-Y source and 5% low for the {sup 204}Tl source. Also, analyses performed with low-energy beta s using these methods can determine errors in shield thickness covering TLD elements. Direct measurement of skin dose is not possible by the TLDs because the minimum shield thickness for the elements is 13 mg cm-2. A thinner shield for the elements must be used or the data must be extrapolated. Presently, thinner shields for TLD elements are not available, and the thick shields can lead to significant errors in skin dose when exposed to low-energy beta s.
- OSTI ID:
- 5080353
- Journal Information:
- Health Physics; (USA), Journal Name: Health Physics; (USA) Vol. 57:6; ISSN 0017-9078; ISSN HLTPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560151* -- Radiation Effects on Animals-- Man
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALINE EARTH ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
DOSEMETERS
DOSES
DOSIMETRY
EVEN-EVEN NUCLEI
EXTRAPOLATION CHAMBERS
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
IONIZATION CHAMBERS
ISOTOPES
MEASURING INSTRUMENTS
MONTE CARLO METHOD
NUCLEI
ODD-ODD NUCLEI
ORGANS
RADIATION DETECTORS
RADIATION DOSES
RADIOISOTOPES
SKIN
STRONTIUM 90
STRONTIUM ISOTOPES
THALLIUM 204
THALLIUM ISOTOPES
THERMOLUMINESCENT DOSIMETRY
YEARS LIVING RADIOISOTOPES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALINE EARTH ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
DOSEMETERS
DOSES
DOSIMETRY
EVEN-EVEN NUCLEI
EXTRAPOLATION CHAMBERS
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
IONIZATION CHAMBERS
ISOTOPES
MEASURING INSTRUMENTS
MONTE CARLO METHOD
NUCLEI
ODD-ODD NUCLEI
ORGANS
RADIATION DETECTORS
RADIATION DOSES
RADIOISOTOPES
SKIN
STRONTIUM 90
STRONTIUM ISOTOPES
THALLIUM 204
THALLIUM ISOTOPES
THERMOLUMINESCENT DOSIMETRY
YEARS LIVING RADIOISOTOPES