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- 저자 : Y. Nakane (검색결과 1 건)
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M. Hagiwara,T. Sanami,K. Masumoto,Y. Iwamoto,N. Matsuda,Y. Sakamoto,Y. Nakane,H. Nakashima,Y. Uwamino 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Nuclear data on proton-induced neutron and γ-ray production in the energy range from 10 to 20 MeV is important to estimate the shield design and activation of low-energy cyclotron facilities for medical use such as production of radiopharmaceuticals in positron emission tomography (PET). We have measured double-differential thick target yields (TTYs) of neutrons and γ-rays from a ^(18)O-enriched water (H^(18)_2O) target induced by 18 MeV protons in order to estimate leakage radiations from a cyclotron and the neutron-induced activation in the production process of the ^(18)F-tagged fluorodeoxyglucose (FDG) which is a common radiopharmaceuticals for PET. Neutrons and γ-rays were measured with 5.08 cm diameter × 5.08 cm long NE213 scintillators for eight laboratory angles between 15- and 150-degrees. After applying a neutron-γ-ray event separation using the pulse-shape-discrimination (PSD) technique the neutron and γ-ray events were analyzed by a time-of-flight (TOF) technique and an unfolding technique, respectively. The measured TTYs were compared with TENDL-2009 data library and the physical model calculations with MCNPX and PHITS. The calculated TTYs roughly agree with the measured data.
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