Film badge as an alternative personal dosimeter for thermal neutrons
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عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)
نویسندگان
چکیده
In the present work for the first time in Iran performance of film badge as an alternative personal dosimeter for thermal neutrons is investigated by adding a cadmium-lead (Cd-Pb) filter with the same thickness as the tin-lead (Sn-Pb) filter of the badge. Since thermal neutrons are mixed with gamma rays, the dosimeter is irradiated in the 60Co gamma rays standard field of Karaj SSDL as well as the mixed neutron-gamma field of the radiography beamline of Isfahan Miniature Neutron Source Reactor (MNSR) in the personal dose-equivalent range of 0.1 to 10 mSv. Result obtained reveal that film badge simultaneously determines the thermal neutrons and gamma rays dose fractions. The uncertainty of neutron dose-equivalent is 50% which is acceptable in personal dosimetry.
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