``Hot particle`` intercomparison dosimetry

Conference · Sat Jun 01 00:00:00 EDT 1996

OSTI ID:277001

Kaurin, D G.L.; Baum, J W ^[1]; Charles, M W; Darley, D P.J. ^[2]; Durham, J S ^[3]; Scannell, M J ^[4]; Soares, C G ^[5]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Birmingham Univ. (United Kingdom)
3. Pacific Northwest Lab., Richland, WA (United States)
4. Yankee Atomic Electric Co., Bolton, MA (United States)
5. National Inst. of Standards and Technology, Gaithersburg, MD (United States)

Dosimetry measurements of four ``hot particles`` were made at different density thickness values using five different methods. The hot particles had maximum dimensions of 650 {mu}m and maximum beta energies of 0.97, 046, 0.36 and 0.32 MeV. Absorbers were used to obtain the dose at different depths for each dosimeter. Measurements were made using exoelectron dosimeters, an extrapolation chamber, NE extremity tape dosimeters, Eberline RO-2 and RO-2A survey meters, and two sets of GafChromic dye film with each set read out at a different institution. From these results the dose was calculated averaged over 1 cm{sup 2} of tissue at 18, 70, 125, and 400 {mu}m depth. Comparisons of tissue-dose averaged over 1 cm{sup 2} for 18, 70 and 125 {mu}m depth based on interpolated measured values, were within 30% for the GafChromic dye film, extrapolation chamber, NE Extremity Tape dosimeters, and Eberline RO-2 and 2A survey meters except for the hot particle with 0.46 MeV maximum beta energy. The results for this source showed differences of up to 60%. The extrapolation chamber and NE Extremity Tape dosimeters under-responded for measurements at 400 {mu}m by about a factor of 2 compared with the Gaf Chromic dye films for two hot particles with maximum beta energy of 0.32 and 0.36 MeV which each emitted two 100% 1 MeV photons per disintegration. Tissue doses determined using exoelectron dosimeters were a factor of 2 to 5 less than those determined using other dosimeters, possibly due to failures of the equipment.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: Nuclear Regulatory Commission, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 277001
• Report Number(s): BNL-NUREG--62150; CONF-960409--5; ON: DE96011815
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
BETA DETECTION
BETA DOSIMETRY
BETA PARTICLES
BETA SOURCES
BETA SPECTRA
COMPARATIVE EVALUATIONS
DEPTH
DOSEMETERS
EXOELECTRON DOSEMETERS
EXTRAPOLATION CHAMBERS
MEASURING INSTRUMENTS
MEASURING METHODS
PHOTOGRAPHIC FILM DOSEMETERS
TISSUE DISTRIBUTION