Application of CR-39 Track Detector to Neutron Spectrum Measurement
Application of CR-39 Track Detector to Neutron Spectrum Measurement
复制标题
CR-39径迹探测器在中子能谱测量中的应用
DOI：
10.3327/jnst.28.608
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发表时间：
1991
影响因子：
1.2
通讯作者：
I. Kimura
中科院分区：
文献类型：
--
作者：
K. Oda;Hiroyuki Encho;H. Yoneda;H. Miyake;I. Urabe;K. Kobayashi;I. Kimura
本文提出了一种用CR-39径迹探测器估算中子能谱的新方法，并应用于常规计数器不能正常工作的单脉冲中子场。对CR-39样品进行了间歇中子腐蚀，测量了各腐蚀阶段蚀坑的大小半径，得到了生长曲线。设计了生长曲线的分析方法，可以计算反冲质子的能量和角度，并将其转换为正常入射中子的能量。中子辐照实验是在京都大学研究堆研究所的46 MeV电子直线加速器上进行的。通过与中子飞行时间法测量的参考谱的比较，证实了本增长曲线法对于估计约0.3和2 MeV之间的中子能量分布是有用的。此外，我们还通过实验研究了…
A new technique for estimating the neutron energy spectrum with CR-39 track detectors has been proposed for application to a singly pulsed neutron field where prevailing counters cannot operate properly. The CR-39 sample exposed to neutrons was intermittently etched, then the major and minor radii of respective etch pits were measured for each etching stage and the growth curve was obtained. The analysis method of growth curves was also designed, with which both the energy and the angle of recoil protons could be evaluated and converted into the energy of neutrons incident normally. The neutron irradiation experiments were carried out with the 46 MeV electron linear accelerator at the Research Reactor Institute, Kyoto University. It was confirmed from comparing with the reference spectrum measured by the neutron time-of-flight method that the present growth-curve method is useful for the estimation of the neutron energy distribution between about 0.3 and 2 MeV. Moreover, we have experimentally examined th...