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KMID : 0364920130380010044
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Journal of Radiation Protection and Research
2013 Volume.38 No. 1 p.44 ~ p.51
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Preliminary Study on Applicability of Accumulate Personal Neutron Dosimeter for Cosmic-ray Exposure of Aviators
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Kim Hyeong-Jin
Chang Byung-Uck
Byun Jong-In
Song Myeong-Han
Kim Jung-Ho
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Abstract
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ICRP recommended that cosmic ray exposure to the pilot and cabin crew would be considered as an occupational exposure due to their relatively high exposure. Since 2012 with the Act No. 10908 (Natural radiation management), the guideline of cosmic ray exposure to the pilot was established in Korea. The applicability of the solid-state nuclear track detector for personal dose assessment of pilot and cabin crew was evaluated. Dose linearity and angle dependence of dosimeters to the neutron were evaluated by 252Cf neutron emitting source. The track density has a good agreement with the dose (r2=0.99) and highly dependent on the degree of an angular of the dosimeter to the neutron source. In addition, the dosimeters (SSNTD) were exposed to cosmic ray in an aircraft during its cruising for more than two months in collaboration with Airline Pilots Association of Korea. Although the correlation between the track density from aircraft cruising altitude and expected neutron dose is low, however RSNS dosimeter could be used for personal neutron dosimeter. For application of RSNS as a personal dosimeter for pilot and cabin crew, additional studies are required.
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KEYWORD
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Cosmic radiation, Aircrew, Solid state nuclear etched-track detector, Neutron, RSNS dosimeter
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