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Portable tissue equivalent calorimeter
Author(s) -
McDonald Joseph C.,
Laughlin John S.,
Freeman Richard E.
Publication year - 1976
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.594273
Subject(s) - calorimeter (particle physics) , medical physics , medical imaging , dosimetry , nuclear medicine , physics , medicine , optics , radiology , detector
A portable tissue equivalent calorimeter has been constructed and employed to measure absorbed dose in a mixed fast‐neutron and γ‐ray field. Design details and measurement techniques are described along with the limits of precision and absolute accuracy. Experiments have been carried out with a cyclotron produced neutron beam using the 9 Be(d,n) 10 B reaction at dose rates ranging from 3 to 25 rad/min. A series of ten measurements at a dose rate of approximately 10 rad/min were performed with a precision of ±2% (standard deviation about the mean). The compact design of this calorimetric dosimeter system facilitates transport to other laboratories for the measurement of absorbed dose in several complex radiation fields.