2011年8月
Spectrum Measurement of Neutrons and Gamma-rays from Thick (H2O)-O-18 Target Bombarded with 18 MeV Protons
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
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- 巻
- 59
- 号
- 2
- 開始ページ
- 2035
- 終了ページ
- 2038
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.3938/jkps.59.2035
- 出版者・発行元
- KOREAN PHYSICAL SOC
Nuclear data on proton-induced neutron and gamma-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 gamma-rays from a O-18-enriched water ((H2O)-O-18) 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 F-18-tagged fluorodeoxyglucose (FDG) which is a common radiopharmaceuticals for PET. Neutrons and gamma-rays were measured with 5.08 cm-diameter x 5.08 cm-long NE213 scintillators for eight laboratory angles between 15- and 150-degrees. After applying a neutron-gamma-ray event separation using the pulse-shape-discrimination (PSD) technique the neutron and gamma-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.
- リンク情報
- ID情報
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- DOI : 10.3938/jkps.59.2035
- ISSN : 0374-4884
- CiNii Articles ID : 80022023722
- Web of Science ID : WOS:000294080700142