Measurement of the thermal and fast neutron flux in a research reactor with a Li and Th loaded optical fibre detector
Measurement of the thermal and fast neutron flux in a research reactor with a Li and Th loaded optical fibre detector
复制标题
使用负载 Li 和 Th 的光纤探测器测量研究堆中的热中子通量和快中子通量
DOI：
10.1016/s0168-9002(99)00473-8
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发表时间：
1999
影响因子：
1.4
通讯作者：
I. Pázsit
中科院分区：
文献类型：
--
作者：
Y. Yamane;A. Uritani;T. Misawa;J. Karlsson;I. Pázsit
在1MW研究堆堆芯轴向测量了热中子通量和快中子通量的空间依赖性。测量是用带有中子敏感ZnS（Ag）闪烁尖端的薄光纤探测器进行的。热中子用6li，快中子用232th作为中子变换器。通过匀速轴向移动纤维来测量空间依赖性。与传统的电线激活方法长达10小时相比，测量只需几分钟。与传统测量方法比较，结果吻合较好。
The spatial dependence of thermal and fast neutron flux was measured axially in the core of a 1MW research reactor. The measurements were made by a thin optical fibre detector with a neutron sensitive ZnS(Ag) scintillation tip. For thermal neutrons6Li was used, whereas for fast neutrons232Th was used as neutron converter. The spatial dependence was measured by moving the fibre axially with a uniform speed. The measurement takes a few minutes, compared to up to 10 h with the conventional wire activation method. Comparison with traditional measurements shows a good agreement.