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KMID : 1151820160100070489
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Journal of the Korean Society of Radiology
2016 Volume.10 No. 7 p.489 ~ p.494
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Analysis of Air Activation in PET Cyclotron Facility
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Jang Dong-Gun
Kang Se-Sik
Kim Chang-Soo
Kim Jung-Hoon
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Abstract
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Nuclear reaction which occurs in the cyclotron generate unnecessary neutrons. The results of this happening can radioactivate surrounding materials and radioactive materials cause radiation exposure. When people take radioactive air, it makes internal exposure. The purpose of this study was to analyze the radioactive air inside of the ultra-compact 16.5 MeV cyclotron in operation. As a result of study, the radio activation occurred by compact cyclotron generates a very low internal exposure to workers. Comparing the radioactivity from radioactive nuclide with legal standard, that was under reference value. However, it could be at risk for internal exposure in case of higher energy cyclotron. Therefore, legal standard is needed for ventilation equipment of radiation facilities.
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KEYWORD
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Activation, Cyclotron, Air
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