Abstract
Corrective factors for thermoluminescent dosimeters to obtain the γ-ray dose in materials are examined systematically based on a general cavity ionization theory, and an experimental method; interpolation method, is presented for measuring the γ-ray absorbed dose in materials using thermoluminescent dosimeters with different atomic numbers. A characteristic feature of the method is to measure the γ-ray absorbed dose in materials without any γ-ray spectrum information. In order to examine the feasibility, the absorbed doses are measured in iron, lead and polyethylene media with a 60Co γ-ray source, and compared with a transport calculations whose accuracy is already verified. It is shown that the γ-ray absorbed doses measured using the present method agree with the calculated ones within ±5 to ±10%.
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