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KMID : 1151820140080060287
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Journal of the Korean Society of Radiology
2014 Volume.8 No. 6 p.287 ~ p.292
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A Study on Neutron Resonance Energy of 180Ta below 1eV Energy
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Lee Sam-Yol
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Abstract
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In this study, the neutron capture cross section of ¹??Ta(natural existence ratio: 0.012 %) obtain by measuring has been compared with the evaluated data for the capture data. In generally, the neutron capture resonance is defined as Breit-Wigner formula. The formula consists of the resonance parameters such as neutron width, total width and neutron width. However in the case of ¹??Ta, these are very poor experimental neutron capture cross section data and resonance information in below 10 eV. Therefore, in the study, we analyzed the neutron resonance of ¹??Ta with the measuring the prompt gamma-ray from the sample. And the resonance was compared with the evaluated data by Mughabghab, ENDF/B-VII, JEFF-3.1 and TENDL 2012. Neutron sources from photonuclear reaction with 46-MeV electron linear accelerator at Research Reactor Institute, Kyoto University used for cross section measurement of ¹??Ta(n,γ)¹?¹Ta reaction. BGO(Bi₄Ge₃O₁₂) scintillation detectors used for measurement of the prompt gamma ray from the ¹??Ta(n,γ)¹?¹Ta reaction. The BGO spectrometer was composed geometrically as total energy absorption detector.
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KEYWORD
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180Ta, Neutron Capture, Low Energy Resonance, Electron Linear Accelerator
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