论文标题
快速中子光谱法具有高压氮气填充的大体积球形比例计数器
Fast Neutron Spectroscopy with a High-pressure Nitrogen-filled Large Volume Spherical Proportional Counter
论文作者
论文摘要
我们提出了一个基于氮填充的大体积气态检测器（球形比例计数器）的快速中子光谱系统。该系统已成功运行至1.5 bar的气压。通过测量14N（N，A）11B和14N（N，P）14C反应产物来估计中子能量。这些反应与3HE（N，P）3H反应具有可比的横截面和Q值，使氮是3E使用的良好替代品，用于快速中子检测。伯明翰大学建造了两个探测器，目前用于测量伯明翰大学和Boulby Underground Laboratory的快速和热中子。
We present a fast neutron spectroscopy system based on a nitrogen-filled, large volume gaseous detector, the Spherical Proportional Counter. The system has been successfully operated up to gas pressure of 1.5 bar. Neutron energy is estimated through measurement of the 14N(n,a)11B and 14N(n,p)14C reaction products. These reactions have comparable cross sections and Q-values with the 3He(n,p)3H reaction making nitrogen a good alternative to 3He use for fast neutron detection. Two detectors were built at the University of Birmingham and are currently used for the measurement of fast and thermal neutrons in the University of Birmingham and the Boulby underground laboratory, respectively.
