Dual integral glow analysis-evaluation of the method in determination of shallow dose and deep dose in selected beta radiation fields
- Univ. of Michigan, Ann Arbor, MI (United States)
Since introduction of the shallow dose and deep dose by the International Commission on Radiation Units and Measurement (ICRU) in 1985, many efforts have been made to measure these quantities. In an earlier study, we introduced a new method, termed Dual Integral Glow Analysis (DINGA), for evaluation of these quantities. The method is based on obtaining the integrals of the glow curves from opposite sides of a hot gas-heated single or pair of thermoluminescent dosimeters (TLD). In this study, we demonstrate the feasibility of DINGA in determination of the shallow dose and deep dose in selected beta radiation fields using a computational algorithm. The depth-dose distributions in the TLDs are computed for 19 well-defined beta radiation fields using the EGS4 Monte Carlo radiation transport code. Using a mathematical description of depth-dose distribution in the TLD and given the thermophysical and optical parameters of the system, the Randall-Wilkins TL model is used in a computational routine to reconstruct the depth-dose distribution from which the deep dose and shallow dose are evaluated. Introducing a 5% fluctuation in response of the TL elements, the error in the computed deep dose and shallow dose is within {+-}20% for examined beta radiation fields.
- OSTI ID:
- 393939
- Report Number(s):
- CONF-9607135-; ISSN 0017-9078; TRN: 96:028621
- Journal Information:
- Health Physics, Vol. 70, Issue Suppl.6; Conference: 41. Annual Meeting of the Health Physics Society, Seattle, WA (United States), 21-25 Jul 1996; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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