Spallation neutron emission spectra in medium and heavy target nuclei by a proton beam up to 140 MeV energy |
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| Affiliation: | 1. Faculty of Arts and Sciences, Süleyman Demirel University, 32260 Isparta, Turkey;2. Faculty of Arts and Sciences, Gazi University, 06500 Ankara, Turkey;3. Faculty of Arts and Sciences, Kırıkkale University, 71450 Kırıkkale, Turkey;1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;2. School of Physical Sciences, University of Science and Technology of China, Hefei 230027, China;3. Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing 102413, China;4. College of Physics Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028000, China;1. GANIL, BP 55027, 14076 CAEN Cedex 05, France;2. LPC Caen, 6 bd Maréchal Juin, 14050 CAEN Cedex, France;1. Graduate School, Kanazawa Institute of Technology, 7-1, Ohgigaoka, Nonoichi, Ishikawa, 921-8501, Japan;2. Mechanical Engineering, Kanazawa Institute of Technology, 7-1, Ohgigaoka, Nonoichi, Ishikawa, 921-8501, Japan;1. Joint Institute for Nuclear Research, Dubna 141980, Russia;2. Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Prague 11519, Czech Republic;3. Nuclear Physics Institute of the ASCR, Řež 25068, Czech Republic;4. National Science Center Kharkov Institute of Physics and Technology, Kharkov 61108, Ukraine;5. Joint Institute of Power and Nuclear Research NASB, Sosny, Minsk 220109, Belarus;6. Center of Physics and Technical Projects “Atomenergomash”, Moscow 125130, Russia;7. Brno University of Technology, Brno 60200, Czech Republic;8. Fermi National Accelerator Laboratory, Batavia, IL 60510-5011, USA;9. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria |
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| Abstract: | In this study, neutron-emission spectra produced by (p,xn) reactions for some spallation neutron target nuclei such as 65Cu, 204,206,207,208Pb, 209Bi, 232Th and 238U have been calculated by a proton beam up to 140 MeV. Multiple pre-equilibrium mean free path constants from internal transition for 204,208Pb (p, xn) neutron emission spectra have been investigated. In the calculations, pre-equilibrium effects were calculated by using new evaluated hybrid model and geometry dependent hybrid model, full exciton model and cascade exciton model. The reaction equilibrium component was calculated by Weisskopf–Ewing model. The obtained results have been discussed and compared with the available experimental data and found agreement with each other. |
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