Measuring neutron dose and quality factors with tissue equivalent proportional counters
The methods used to obtain absolute neutron dose measurements and quality factor determination from the tissue equivalent proportional counter (TEPC) are reviewed. Exposure to nearly monoenergetic neutrons with energies from 200 keV to 7.5 MeV indicate that the absorbed dose due to fast neutrons measured by the TEPC averaged 3% higher, with a standard deviation (1 sigma) of 9%, than the tissue kerma calculated from neutron fluence measurements. The absorbed dose due to fast neutrons measured by the TEPC agreed within 0.6% of the calculated tissue kerma for a PuBe neutron source, whose neutron yield was determined within 2% by the United States National Bureau of Standards. Data are presented which show the TEPC measures quality factors accurately enough for health physics purposes for neutrons with energies between 200 keV and 5 MeV.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (USA)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 5726686
- Report Number(s):
- PNL-SA-6603; CONF-780612-10; IAEA-SM-229/52
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
DOSIMETRY
ELEMENTARY PARTICLES
ENERGY RANGE
FAST NEUTRONS
FERMIONS
HADRONS
KEV RANGE
KEV RANGE 100-1000
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 01-10
NEUTRON DOSIMETRY
NEUTRONS
NUCLEONS
PROPORTIONAL COUNTERS
QUALITY FACTOR
RADIATION DETECTORS
TISSUE-EQUIVALENT DETECTORS