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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2010.1
- 수록면
- 79 - 88 (10page)
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초록· 키워드
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Spent UO2 nuclear fuel discharged from a nuclear power plant (NPP) contains fission products, U, Pu, and other actinides. Due to neutron capture by 238U in the rim region and a temperature gradient between the center and the rim of a fuel pellet, a considerable increase in the concentration of fission products, Pu, and other actinides are expected in the pellet periphery of high burnup fuel. The characterization of the radial profiles of the various isotopic concentrations is our main concern. For an analysis, spent nuclear fuels originating from the Yeonggwang-2 pressurized water reactor (PWR) were chosen as the test specimens. In this work, the distributions of some actinide isotopes were measured from center to rim of the spent fuel specimens by a radiation shielded laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS)system. Sampling was performed along the diameter of the specimen by reducing the sampling intervals from 500 μm in the center to 100 μm in the pellet periphery region. It was observed that the isotopic concentration ratios for minor actinides in the center of the specimen remain almost constant and increase near the pellet periphery due to the rim effect apart from the 236U to 235U ratio, which remains approximately constant. In addition, the distributions of local burnup were derived from the measured isotope ratios by applying the relationship between burnup and isotopic ratio for plutonium and minor actinides calculated by the ORIGEN2 code.
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참고문헌 (17)
참고문헌 신청
/ 1996 / Atom Percent Fission in Uranium and Plutonium Fuel (Neodymium-148 Method) / American Society for Testing and Materials Standard Method E321-96 : 1 ~
C. Madic / 1985 / Preparation of Nuclide and Sources of Actinides Elements / Nuclear Instruments and Methods in Physics Research A236 : 474 ~
C. Pickhardt / 2000 / A New Strategy of Solution Calibration in Laser Ablation Inductively Coupled Plasma Mass Spectrometry for Multielement Trace Analysis of Geological Samp
E.R. Denoyer / 1991 / Laser Solid Sampling for Inductively Coupled Plasma Mass Spectrometry / Analytical Chemistry 63 (8) : 445 ~
H. Werner / 1997 / Build-up of Plutonium Isotopes in HTR Fuel Elements: A Comparison Between Computed Prediction and Chemical Analysis / Nuclear Engineering and Design 170 :
C. Madic / 1985 / Preparation of Nuclide and Sources of Actinides Elements / Nuclear Instruments and Methods in Physics Research A236 : 474 ~
C. Pickhardt / 2000 / A New Strategy of Solution Calibration in Laser Ablation Inductively Coupled Plasma Mass Spectrometry for Multielement Trace Analysis of Geological Samp
E.R. Denoyer / 1991 / Laser Solid Sampling for Inductively Coupled Plasma Mass Spectrometry / Analytical Chemistry 63 (8) : 445 ~
H. Werner / 1997 / Build-up of Plutonium Isotopes in HTR Fuel Elements: A Comparison Between Computed Prediction and Chemical Analysis / Nuclear Engineering and Design 170 :
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