Study of particle size distribution and formation mechanism of radioactive aerosols generated in high-energy neutron fields |
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| Authors: | A Endo K Sato H Noguchi Su Tanaka T Iida S Furuichi Y Kanda Y Oki |
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| Institution: | (1) Department of Health Physics, Tokai Research Establishment, Japan Atomic Energy Research Institute, Tokai, Ibaraki, 319-1195, Japan;(2) Department of Health Physics, Tokai Research Establishment, Japan Atomic Energy Research Institute Division of Training and Development, Tokai, Ibaraki, 319-1195, Japan;(3) Department of Health Physics, Tokai Research Establishment, Japan Atomic Energy Research Institute Internal Dosimetry Laboratory Department of Health Physics, Tokai, Ibaraki, 319-1195, Japan;(4) Advanced Radiation Technology Center, Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki, Gunma, 370-1292, Japan;(5) Graduate School of Nuclear Engineering, Nagoya University Chikusa-ku, Nagoya, Aichi, 464-8603, Japan;(6) Radiation Science Center, High-energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki, 305-0801, Japan;(7) Research Reactor Institute, Kyoto University, Kumatori, Sennan-gun, Osaka, 590-0494, Japan |
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| Abstract: | The size distributions of 38Cl, 39Cl, 82Br and 84Br aerosols generated by irradiations of argon and krypton gases containing di-octyl phthalate (DOP) aerosols with 45 MeV and 65 MeV quasi-monoenergetic neutrons were measured in order to study the formation mechanism of radioactive particles in high energy radiation fields. The effects of the size distribution of the radioactive aerosols on the size of the added DOP aerosols, the energy of the neutrons and the kinds of nuclides were studied. The observed size distributions of the radioactive particles were explained by attachment of the radioactive atoms generated by the neutron-induced reactions to the DOP aerosols. |
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