Rossi-α方法测量CFBR-Ⅱ堆瞬发中子衰减常数

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Measurement of Prompt Neutron Decay Constant with Rossi-α on CFBR-Ⅱ Reactor

Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan, 621900, China;National Engineering Research Center of Nuclear Technology Application in Industry, Mianyang, Sichuan, 621900, China

摘要: 瞬发中子衰减常数α是核系统的重要特征参数。简要介绍了点堆模型的α本征值定义以及Rossi-α方法原理,并利用研制的Rossi-α测量系统在CFBR-Ⅱ堆上开展了多个状态的α实验测量,获得了系列的次临界α实验数据以及缓发临界时的瞬发中子衰减常数α_c,为相关实验提供了基准数据。
- 瞬发中子衰减常数 /
- Rossi-α方法 /
- CFBR-Ⅱ堆 /
- 缓发临界 /
- 次临界
Abstract: Prompt neutron decay constant is the major characteristic parameter.Based on the Rossi-α theory and measurement technique, experiments were carried on measuring the prompt neutron decay constant with Rossi-α measurement equipment under the sub-critical and delayed critical of CFBR-Ⅱ reactor and a series of prompt neutron decay constant acquired provides the benchmark data for other experiments.
- Prompt neutron decay constant /
- Rossi-α /
- CFBR-Ⅱ reactor /
- Delayed critical /
- Sub-critical