~(238) U(n,f)短寿命产物核累积产额的评价
Evaluation of Cumulative Yields for Short-1ived Fission Products from ~(238)U(n,f)
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摘要: 为满足堆内或核爆中链式反应过程的燃耗值的计算需要,对裂变谱中子和14 MeV中子诱发~(238) U 裂变的短寿命产物核的累积产额进行了评价.评价利用了所有可利用的实验数据,经物理分析后,使用AVERAGE程序加权平均,用ZOTT程序进行同时评价,给出了所要求能点的唯一最佳推荐数据,并将评价结果与ENDF/B-VⅡ,JEF-2.2,JENDL-3.2和CENDL-2的推荐数据进行了比较.评价结果将用于CENDL-2的更新与升级.
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关键词:
- ~(238)U(n,f)反应 /
- 累积产额 /
- 裂变产物的评价
Abstract: For reliable and consistent nuclear calculation,the cumulative yields for short-lived fis-sion products are evaluated based on the available experimental data for ~(238)U fission induced by fis-sion spectrum neutrons and ~14 MeV neutrons.The data are processed using codes AVERAGE for weighed average and ZOOT for simultaneous evaluation.The evaluated data are compared with those in the major international nuclear data libraries,including ENDF/B-VII,JEF-2.2,JENDL-3.2 and CENDL-2.The present evaluation will be used to improve and update the CENDL-2 li-brary. -
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