Excitation functions of (p, 2n) and (p,pn) reactions and differential and integral yields of 123I in proton induced nuclear reactions on highly enriched 124Xe |
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| Institution: | 1. Institut für Chemie 1 (Nuklearchemie), Forschungszentrum Jülich GmbH, 5170 Jülich, Germany;2. Radionuclide and Cyclotron Operations Department, King Faisal Specialist Hospital and Research Centre, P.O. Box 3354, Riyadh 11211, Kingdom Saudi Arabia;3. Institut für Kernphysik III/Zyklotron, Kernforschungszentrum Karlsruhe, Karlsruhe, Germany;1. Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia;2. Novosibirsk State Technical University, 20 Marx ave., 630073 Novosibirsk, Russia;3. Novosibirsk State University, 2 Pirogov str., 630090 Novosibirsk, Russia;1. Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Naka, Ibaraki 319-1195, Japan;2. RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan;3. Nuclear Science and Engineering Center, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Naka, Ibaraki 319-1195, Japan;4. Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8550, Japan;5. Department of Nuclear Engineering, University of California, Berkeley, CA 94720, USA;6. Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA;1. Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, The Netherlands;2. Department of Nuclear Medicine, Thoraxcenter, Erasmus Medical Center, Rotterdam, The Netherlands;1. School of Physics, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK;2. National Nuclear Laboratory, Preston Laboratory, Springfields, Preston, Lancashire, PR4 0XJ, UK;1. Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;2. School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;3. Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing 100084, China;4. Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China |
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| Abstract: | Excitation functions were measured for (p, 2n) and (p, pn) reactions on 99.9% enriched 124Xe from threshold up to 44 MeV. The (p, 2n) reaction is much stronger than the (p, pn) channel; above 36 MeV, however, the two processes have almost equal cross sections. Differential yields of 123I were measured experimentally as a function of proton energy and were also calculated from the excitation functions. Our experimental and theoretical yield data are consistent within 15%, but are lower by a factor of 2 than the literature experimental values. Our studies show that the optimum energy range for the production of 123I is Ep = 29 → 23 MeV. The theoretically expected thick target yield of 123I at 6.6 h after EOB is 11.2 mCi/μAh, and is in agreement with the high-current experimental production yields. |
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