Passive particle dosimetry. Final report, 17 November 1970--30 June 1977
Present methods of dosimetry are reviewed with emphasis on the processes using silver chloride crystals for ionizing particle dosimetry. Differences between the ability of various crystals to record ionizing particle paths are directly related to impurities in the range of a few ppm (parts per million). To understand the roles of these impurities in the process, a method for consistent production of high purity silver chloride, and silver bromide was developed which yields silver halides with detectable impurity content less than 1 ppm. This high purity silver chloride was used in growing crystals with controlled doping. Crystals were grown by both the Czochalski method and the Bridgman method, and the Bridgman grown crystals were used for the experiments discussed. The distribution coefficients of ten divalent cations were determined for the Bridgman crystals. The best dosimeters were made with silver chloride crystals containing 5 to 10 ppm of lead; other impurities tested did not produce proper dosimeters.
- Research Organization:
- North Carolina Univ., Chapel Hill (USA). Dept. of Physics and Astronomy
- OSTI ID:
- 6356697
- Report Number(s):
- N-78-27965
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BRIDGMAN METHOD
BROMIDES
BROMINE COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL GROWTH
DOSEMETERS
HALIDES
HALOGEN COMPOUNDS
IMPURITIES
MEASURING INSTRUMENTS
SENSITIVITY
SILVER BROMIDES
SILVER CHLORIDES
SILVER COMPOUNDS
TRANSITION ELEMENT COMPOUNDS