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KMID : 1151820160100050337
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Journal of the Korean Society of Radiology
2016 Volume.10 No. 5 p.337 ~ p.341
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Measurement of Energy Dependent Differential Neutron Capture Cross-section of Natural Sm by Using a Continuous Neutron Flux below
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Yoon Jung-Ran
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Abstract
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We measured the neutron capture cross-section of natural Sm(n,γ) reaction in the energy regions from 0.003 to 10 eV. The 46-MeV electron linear accelerator of Research Reactor Institute, Kyoto University was used for generating a continuous neutron source. The neutron time-of-flight method was adopted for energy measurement. An assembly of BGO(Bi4Ge3O12) scintillators composed of 12 pieces of BGO crystals measured prompt gamma rays from Sm(n,γ) reaction. The BGO assembly was located at a distance of 12.7 ± 0.02 m from the neutron source. In order to determine the neutron flux impinging on the Sm, the 10B(n,αγ)7Li standard cross-section were used. Natural Sm(n,γ) reaction measurement result of the neutron capture cross-section was compared with the results of evaluation of the BROND-2.2 and the previous experimental data of J. C. Chou and V. N. Kononov.
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KEYWORD
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Neutron capture cross section, Sm, 46-MeV electron linear accelerator, BGO detector
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