Excitation functions of proton-induced reactions on natFe and enriched 57Fe with particular reference to the production of 57Co |
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| Institution: | 1. Institut für Nuklearchemie, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;2. Cyclotron Facility, Nuclear Research Centre, Atomic Energy Authority, Cairo 13759, Egypt;1. Department of Medical Radiation Engineering, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran;2. Finetech in Medicine Research Center, Iran University of Medical Sciences, P.O. Box: 14155-6183, Tehran, Iran;3. Medical Physics Department, School of Medicine, Iran University of Medical Sciences, P.O. Box: 14155-6183, Tehran, Iran;4. Department of Physics, Payame Noor University, P.O. Box: 19395-3697, Tehran, Iran;1. Advanced Clinical Research Center, Fukushima Medical University, Fukushima 960-1295, Japan;2. Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan;3. Global Center for Biomedical Science and Engineering, Faculty of Medicine, Hokkaido University, Sapporo 060-8648, Japan;4. Graduate School of Biomedical Science and Engineering, Hokkaido University, Sapporo 060-8638, Japan;5. National Institutes for Quantum Science and Technology, Sendai 984-8579, Japan;6. Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori 590-0494, Japan;7. Nishina Center for Accelerator-Based Science, RIKEN, Wako 351-0198, Japan;8. Institute for Nuclear Research, (ATOMKI), 4026 Debrecen, Hungary;1. Institute for Nuclear Research, Hungarian Academy of Sciences, Debrecen, Hungary;2. Cyclotron Laboratory, Vrije Universiteit Brussel, Brussels, Belgium;1. Institute for Nuclear Research, (ATOMKI), 4026 Debrecen, Hungary;2. Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan;3. Nishina Center for Accelerator-Based Science, RIKEN, Wako 351-0198, Japan;4. Graduate School of Biomedical Science and Engineering, Hokkaido University, Sapporo 060-8638, Japan;5. Advanced Clinical Research Center, Fukushima Medical University, Fukushima 960-1295, Japan |
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| Abstract: | Excitation functions of the reactions natFe(p,xn)55,56,57,58Co, natFe(p,x)51Cr, natFe(p,x)54Mn, 57Fe(p,n)57Co and 57Fe(p,α)54Mn were measured from their respective thresholds up to 18.5 MeV, with particular emphasis on data for the production of the radionuclide 57Co (T1/2=271.8 d). The conventional stacked-foil technique was used, and the samples for irradiation were prepared by an electroplating or sedimentation process. The measured excitation curves were compared with the data available in the literature as well as with results of nuclear model calculations. From the experimental data, the theoretical yields of the investigated radionuclides were calculated as a function of the proton energy. Over the energy range Ep=15→5 MeV the calculated yield of 57Co from the 57Fe(p,n)57Co process amounts to 1.2 MBq/μA h and from the natFe(p,xn)57Co reaction to 0.025 MBq/μA h. The radionuclidic impurity levels are discussed. Use of highly enriched 57Fe as target material would lead to formation of high-purity 57Co. |
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