Reaction Rate Analysis of Nuclear Spallation Reactions Generated by 150, 190, and 235 MeV Protons

At the National Cancer Center, proton irradiation experiments have been conducted using the cyclotron accelerator to measure the neutron spectrum by the foil activation method. The experimental results demonstrate that high-energy neutrons are bombarded by injecting high-energy protons onto the tung...

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Bibliographic Details
Published in:Journal of nuclear science and technology 2010-11, Vol.47 (11), p.1090-1095
Main Authors: CHEOL HO PYEON, SHIGA, Hiroshi, ABE, Kazuaki, YASHIMA, Hiroshi, NISHIO, Teiji, MISAWA, Tsuyoshi, IWASAKI, Tomohiko, SHIROYA, Seiji
Format: Article
Language:English
Subjects:
Accelerators
Activation
Applied sciences
Cross sections
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Foils
Fuels
Installations for energy generation and conversion: thermal and electrical energy
Mathematical analysis
Mathematical models
Nuclear fuels
Proton irradiation
Spallation
Tungsten
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Summary:At the National Cancer Center, proton irradiation experiments have been conducted using the cyclotron accelerator to measure the neutron spectrum by the foil activation method. The experimental results demonstrate that high-energy neutrons are bombarded by injecting high-energy protons onto the tungsten target. The agreement between the results of the experiments and the MCNPX calculations with ENDF/B-VI is around 20% in the relative difference of the C/E (calculation/experiment) values in some of the 209Bi(n, xn)210-xBi reactions. Here, the activation foil 209Bi is useful in obtaining experimental neutron spectrum information on nuclear spallation reactions of the tungsten target by the high-energy protons ranging between 150 and 235 MeV. The current experimental data could contribute to evaluating the accuracy of the numerical simulation methodology of reaction rates and the uncertainties of cross sections of 209Bi, as experimental benchmarks.
ISSN:0022-3131
1881-1248
DOI:10.3327/jnst.47.1090