HIGH LEVEL DOSIMETRY OF GAMMA AND ELECTRON BEAM SOURCES
High-level integrating dosimeters for use with gamma and electron beam sources must provide convenient accurate aad reproducible measurements of absorbed doses greater than 10/sup 4/ rads ia a large variety of irradiated systems. A large number of integrating, nonabsolute, high-level; dosimeters have been proposed, the most prominent of which involve changes in the chemical, colorimetric or luminescent properties of gases, liquids, aad solids. However, no one method is capable of meeting all of the requirements. As a first step toward standardization of high-level dosimetry measurements, a review is presented of the present status of the field, the desirable requirements for highlevel dosimeters are discussed, and the degree to which various dosimeters meet these requirements under various conditions of use are evaluated. The evaluation is based on information gained in an experimental study of a large number of dosimetry systems which has been conducted in this laboratory. This information is supplemented by a critical review of published data. Another important aspect of standardization is the method used for calibration of non- absolute dosimeters such as those mentioned above. Ionization and calorimetric methods can be used for both gamma radiation and electrons. Combined measurements of particle energy and number of particles absorbed can be used for electrons under the proper conditions. The accuracy, precision, and limitations of these methods for calibration or standardization use under various conditions of radiation type, energy, and dose rate are evaluated. (auth)
- Research Organization:
- Stanford Research Inst., Menlo Park, Calif.
- NSA Number:
- NSA-12-014934
- OSTI ID:
- 4322263
- Report Number(s):
- A/CONF.15/P/2014
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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