Density equations of UO2(NO3)2-HNO3 and UO2(NO3)2-Gd(NO3)3-HNO3 solutions.
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概要
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In order to calculate criticality parameters of nuclear fuel solution systems, number densities of nuclides relating to the medium such as water or organic solvent are needed and generally calculated from density equations.<BR>Densities of uranyl nitrate-nitric acid and uranyl nitrate-gadolinium nitrate-nitric acid solutions were precisely measured, and two empirical density equations for the solutions were derived as functions of concentrations of solutes, temperature and their products from regression analysis of a number of experimental data.<BR>The density equation for the solution of UO<SUB>2</SUB>(NO<SUB>3</SUB>)<SUB>2</SUB>-HNO<SUB>3</SUB> was compared with published equations and discussed from the viewpoint of the atomic number density of hydrogen.<BR>Density equations for the solution of UO<SUB>2</SUB>(NO<SUB>3</SUB>)<SUB>2</SUB>-Gd(NO<SUB>3</SUB>)<SUB>3</SUB>-HNO<SUB>3</SUB> have not been reported so far and the effect of gadolinium on the hydrogen atomic number density in the uranium solution has been neglected. The present equation gives accurate number density in the relevant medium.
- 一般社団法人 日本原子力学会の論文
著者
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Tachimori Shoichi
Department Of Fuel Cycle Safety Research Japan Atomic Energy Research Institute
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SAKURAI Satoshi
Department of Environmental Sciences, Japan Atomic Energy Research Institute
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Miyauchi Masakatsu
Department Of Safety Research Technical Support Japan Atomic Energy Research Institute
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SAKURAI Satoshi
Department of Fuel Safety Research, Japan Atomic Energy Research Institute
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MIYAUCHI Masakatsu
Department of Fuel Safety Research, Japan Atomic Energy Research Institute
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- Density equations of UO2(NO3)2-HNO3 and UO2(NO3)2-Gd(NO3)3-HNO3 solutions.