Calorimetric dose measurements and calorimetric system developed for the Armed Forces Radiobiology Research Institute. Contract report

Technical Report · Fri Aug 01 04:00:00 EDT 1986

OSTI ID:6960165

McDonald, J C

This report describes measurements that were carried out with a tissue-equivalent (TE) plastic calorimeter. This calorimeter was used in the radiation fields produced at the Armed Forces Radiobiology Institute (AFRRI) LINAC (linear acccelerator), reactor, and cobalt-60 sources. The calorimeter was used as a cross-check for other dosimetry in use of AFRRI because its response is essentially independent of dose rate and ionization density. This is important to dose measurements at AFRRI because the radiation sources there are high in intensity, capable of delivering single pulses, and, in the case of the reactor, high in LET (linear energy transfer). The other types of dosimeter systems at AFRRI include TE and nonhydrogenous ionization chambers and activation foils. Ionization chambers suffer from recombination problems when exposed to high dose rates and high-LET radiations, and activation foils require knowledge of the neutron energy spectrum. The calorimeter is not subject to these restrictions, which makes it useful for intercomparison studies.

• Research Organization: Armed Forces Radiobiology Research Inst., Bethesda, MD (USA)
• OSTI ID: 6960165
• Report Number(s): AD-A-172568/8/XAB; AFRRI-CR-86-1
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGY
CALORIMETERS
CALORIMETRIC DOSEMETERS
DOSEMETERS
DOSIMETRY
ELECTROMAGNETIC RADIATION
ENERGY TRANSFER
IONIZATION
IONIZATION CHAMBERS
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PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
PULSES
RADIATION DETECTORS
RADIATIONS
RADIOBIOLOGY
SYNTHETIC MATERIALS
THERMAL RADIATION
TISSUE-EQUIVALENT DETECTORS