Evaluation of the US Army DT-236 battlefield personnel dosimetry system
Performance characteristics of the US Army DT-236 battlefield personnel dosimetry system were evaluated using the Health Physics Research Reactor at Oak Ridge National Laboratory. The DT-236 dosimeter is designed to measure total (neutron plus gamma) radiation dose using a radiophotoluminescent (RPL) detector for gamma rays and a silicon diode for fast neutrons. Areas considered in this evaluation included preirradiation dose indication; accuracy and precision of total, gamma, and neutron dose measurements; fading; angular response; temperature dependence; and relative dosimeter response in air and on various body locations. Experimental results for a variety of radiation fields and dose levels indicate that the existing system overestimates total, neutron, and gamma radiation doses in air by about 20 to 60% relative to reference values. Associated measurement precisions were about +-5% of the means for doses above approximately 0.5 Gy. Fading characteristics, angular dependence, and temperature dependence of the RPL and diode systems were consistent with results expected based on detector characteristics and previous performance studies. Recommendations to improve existing reader performance and measurement accuracy are also presented.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5565761
- Report Number(s):
- ORNL-6265; ON: DE86012594
- Country of Publication:
- United States
- Language:
- English
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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCURACY
DATA
DOSEMETERS
DOSIMETRY
EXPERIMENTAL DATA
GAMMA DOSIMETRY
INFORMATION
LUMINESCENT DOSEMETERS
MEASURING INSTRUMENTS
NEUTRON DOSIMETRY
NUMERICAL DATA
PERFORMANCE TESTING
PERSONNEL DOSIMETRY
RECOMMENDATIONS
RPL DOSEMETERS
TESTING