Spectroscopic study of neptunium complexation in hydrate melts
| Project/Area Number |
20760594
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Nuclear engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
FUJII Toshiyuki Kyoto University, 原子炉実験所, 准教授 (10314296)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 燃料サイクル / ネプツニウム / 水和物溶融体 / 硝酸カルシウム / ラマン分光分析法 / 分子振動 / ウラン / オキソイオン / アクチニルイオン / 濃厚電解質溶液 / 蛍光分光分析 / ラマン分光分析 / 硝酸イオン / 吸光分光分析 / テルビウム / ユーロピウム / 溶存状態 |
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| Research Abstract |
Neptunium species in calcium nitrate hydrate melts were analyzed by Raman spectrometry and UV/Vis/NIR spectrometry. Major fraction was assigned to be NpO_2^<2+> of Np(VI) and small fraction to be NpO_2^+ of Np(V). A shift of the v1 symmetric vibrational frequency of NpO_2^<2+> in nitrate media was found in Raman spectra. This suggests a coordination circumstance change of NpO_2^<2+>.
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Report
(4 results)
Research Products
(4 results)
