Nuclear Engineering and Technology
- 제7권4호
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- Pages.285-293
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- 1975
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- 1738-5733(pISSN)
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- 2234-358X(eISSN)
Determination of Gamma-Ray Depth-Dose Distribution in a Polyethylene Sphere Phantom
- Ha, Chung-Woo (Korea Atomic Energy Research Institute Seoul) ;
- Jun, Jae-Shik (Korea Atomic Energy Research Institute Seoul) ;
- Park, Chae-Shik (Korea Atomic Energy Research Institute Seoul)
- 발행 : 1975.12.01
초록
30cm 직경 포리에티렌 구체내의 길이에 따른 선량분포중 최대흡수선량인 흡수선량지수를 주어진 감마방사선장내에서 열형광선량계를 이용하여 결정하였다. 열형광선량계내의 흡수선량과 주위 눈질내의 흡수선량간의 환산은 Burlin의 general cavity theory에 의거하였다.
A result of the study to determine the depth-dose distribution along the central axis of a polyethylene sphere in diameter of 30cm is described. Depth-dose distribution in the polyethylene sphere for broad beam of monoenergetic photons has been experimentally determined with thermoluminescent dosimeter as a cavity dosimeter. The conversion of dose absorbed in the LiF TLD to dose in the surrounding medium was carried out on the basis of Burlin's generalized cavity theory. Presented in graphical forms are the results obtained. The maximum absorbed doses in the sphere were observed at the depth of about 0.3cm and 0.5cm from the surface of the sphere for the gamma-rays of
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