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KMID : 0364920040290030179
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Journal of Radiation Protection and Research
2004 Volume.29 No. 3 p.179 ~ p.186
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Design of a TL Personal Dosimeter Identifiable PA Exposure and Development of Its Dose Evaluation Algorithm
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Kwon Jung-Wan
Kim Hyun-Gi
Yang Jeong-Seon
Kim Jang-Ryul
Lee Jae-Gi
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Abstract
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A single-dosimeter worn on the anterior surface of body of a worker was found to provide significant underestimation of dose to the worker when radiation comes from behind of the human body. Recently, several researchers suggested that this kind of underestimation can be corrected to a certain extent by using an extra dosimeter on the back. But this multiple dosimetry also has the disadvantages like overestimation lowering work efficiency or cost burden. In this study, a single dosimeter introducing asymmetric filters enabled to identify PA exposure was designed by monte-carlo simulation and experiments and its dose evaluation algorithm for AP-PA mixed radiation field was established. This algorithm was applicable to penetrating radiation which had the effective energy more than 100 keV. Besides, the dosimeter and algorithm in this study were possible to be applied to near PA exposure.
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KEYWORD
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thermoluminescence dosimeter, personal dosimeter, $CaSO_4$ personal dose equivalent, angular dependence
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