一种紧凑型高能中子谱仪。

A compact high-energy neutron spectrometer.

作者信息

Brooks F D, Buffler A, Allie M S, Herbert M S, Nchodu M R, Jones D T L, Smit F D, Nolte R, Dangendorf V

机构信息

Department of Physics, University of Cape Town, Rondebosch, Cape 7700, South Africa.

出版信息

Radiat Prot Dosimetry. 2007;126(1-4):218-22. doi: 10.1093/rpd/ncm045. Epub 2007 Jun 16.

DOI:10.1093/rpd/ncm045

PMID:17575291

Abstract

A compact liquid organic neutron spectrometer based on a single NE213 liquid scintillator (5 cm diameter x 5 cm) is described. The spectrometer is designed to measure neutron fluence spectra over the energy range 2-200 MeV and is suitable for use in neutron fields having any type of time structure. Neutron fluence spectra are obtained from measurements of two-parameter distributions (counts versus pulse-height and pulse shape) using the Bayesian unfolding code MAXED. Calibration and test measurements made using a pulsed neutron beam with a continuous energy spectrum are described and the application of the spectrometer to radiation dose measurements is discussed.

摘要

描述了一种基于单个NE213液体闪烁体（直径5厘米×5厘米）的紧凑型液体有机中子谱仪。该谱仪设计用于测量2-200 MeV能量范围内的中子注量谱，适用于任何时间结构类型的中子场。利用贝叶斯展开代码MAXED，通过测量双参数分布（计数与脉冲高度和脉冲形状）来获得中子注量谱。描述了使用具有连续能谱的脉冲中子束进行的校准和测试测量，并讨论了该谱仪在辐射剂量测量中的应用。