Large-Scale Boron-Lined Neutron Detection Systems as a 3He Alternative for Cosmic Ray Neutron Sensing
Large-Scale Boron-Lined Neutron Detection Systems as a 3He Alternative for Cosmic Ray Neutron Sensing
复制标题
大型硼衬里中子探测系统作为宇宙射线中子传感的 3He 替代方案
作者：
J. Weimar;M. Köhli;Christian Budach;U. Schmidt
宇宙射线中子传感器广泛用于确定公顷规模的土壤湿度。精确测量，特别是在移动应用中，需要具有高计数率和高信噪比的中子探测器。长期以来，宇宙射线中子传感 (CRNS) 仪器一直依赖 3He 作为高效的中子转换器。其持续的稀缺需求需要使用替代转换器（6Li 和 10B）的技术解决方案。最近的发展导致了由多个 10B 排列的正比计数管组成的模块化中子探测器，其通过其大表面积具有高计数率。模块化允许对探测器内的不同部分进行单独屏蔽，具有获取有关所探测中子的光谱信息的能力。这开启了主动信号校正的可能性，尤其在应用于移动测量时特别有用，其中应校正不断变化的近场对整体信号的影响。此外，通过结合脉冲高度和脉冲长度谱来区分中子和其他环境辐射，可以提高信噪比。因此，这种新颖的探测器将高选择性计数电子学与大规模仪器技术相结合。
Cosmic-Ray neutron sensors are widely used to determine soil moisture on the hectare scale. Precise measurements, especially in the case of mobile application, demand for neutron detectors with high counting rates and high signal-to-noise ratios. For a long time Cosmic Ray Neutron Sensing (CRNS) instruments have relied on 3He as an efficient neutron converter. Its ongoing scarcity demands for technological solutions using alternative converters, which are 6Li and 10B. Recent developments lead to a modular neutron detector consisting of several 10B-lined proportional counter tubes, which feature high counting rates via its large surface area. The modularity allows for individual shieldings of different segments within the detector featuring the capability of gaining spectral information about the detected neutrons. This opens the possibility for active signal correction, especially useful when applied to mobile measurements, where the influence of constantly changing near-field to the overall signal should be corrected. Furthermore, the signal-to-noise ratio could be increased by combining pulse height and pulse length spectra to discriminate between neutrons and other environmental radiation. This novel detector therefore combines high-selective counting electronics with large-scale instrumentation technology.
影响因子：
5.4
作者：
Bogena, H. R.;Huisman, J. A.;Vereecken, H.
通讯作者：
Vereecken, H.
影响因子：
5.4
作者：
Baatz, R.;Bogena, H. R.;Vereecken, H.
通讯作者：
Vereecken, H.