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Personnel neutron dosimetry using electrochemically etched CR-39 foils
1989
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Abstract
This report describes our personnel neutron dosimetry system that is based on the electrochemical etching of CR-39 plastic at elevated temperatures. We describe our four-stage electrochemical etch procedure that can be used to process quickly large numbers of CR-39 dosimeters. We have developed an image analyzer that is used to measure the track-size distribution and the track density on the foils. The track-size distribution is used to identify and eliminate foils with high defect-caused backgrounds and to reduce the effective background on the foils by discriminating against defect-caused tracks. The track-size distribution can be used to obtain information on the incident neutron energy or spectrum.
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