Personnel neutron dosimetry using electrochemically etched CR-39 foils

Technical Report · Fri Dec 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/5073585· OSTI ID:5073585

Hankins, D. E.; Homann, S. G.; Buddemeier, B.

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.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5073585
• Report Number(s): UCRL-53833-Rev.1; ON: DE90006391
• Country of Publication: United States
• Language: English

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DEFECTS
DIAGRAMS
DIELECTRIC TRACK DETECTORS
DOSIMETRY
ENERGY DEPENDENCE
ENGINEERING DRAWINGS
ETCHING
EVALUATION
FAILURES
FOILS
MEASURING INSTRUMENTS
MINIMIZATION
NEUTRON DOSIMETRY
NEUTRON SPECTRA
PERSONNEL DOSIMETRY
RADIATION DETECTORS
SENSITIVITY
SPECTRA
SURFACE FINISHING
TEMPERATURE DEPENDENCE
VERY HIGH TEMPERATURE