用~(137)Cs为监测体的放化法测定核燃料的燃耗

RADIOCHEMICAL DETERMINATION OF BURNUP OF NUCLEAR FUEL WITH ~(137)Cs AS MONITOR

摘要: 本文建立了磷酸锆(ZrP)分离-铂氯酸沉淀分析核燃料溶液中~(137)Cs和~(134)Cs的程序,该程序适用于测定核燃料的燃耗。程序的精密度在±0.5％以内。用所测得的~(137)Cs计算的燃耗值与用~(144)Ce为监测体的结果在1.6％内符合。还测定了~(134)Cs/~(137)Cs放射性比与燃耗的关系,并给出了经验公式。也简述了有关的制源技术。
- 燃耗 /
- 监测体 /
- ~(137)Cs /
- ~(134)Cs /
- 磷酸锆 /
- 铂氯酸
Abstract: An analytical procedure for the separation and determination by zirconyl phosphate and chloroplatinate-precipitation for cesium is developed with an accuracy δb±0.5%. Decontamination factors for other nuclides are: 141Ce5.0×105,140La 1.2×105,140Ba≥1.7× 104, 103Ru. 5.4×104, 95Zr 7.0×104,95Nb 5.4×104,239Pu>3.5×103 and U>1.1×103. The calculated values of burnup with 137Cs and 144Ce as monitors are compared and differ by 1.6%, and the dependence of 134Cs/137Cs ratio on the burnup is determined.
- Burnup /
- Monitor /
- Cesium-137 /
- Cesium-134 /
- Zirconyl phosphate /
- Chloro-platinic acid.

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