...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Monte Carlo simulation of explosive detection system based on a Deuterium-Deuterium (D-D) neutron generator
【24h】

Monte Carlo simulation of explosive detection system based on a Deuterium-Deuterium (D-D) neutron generator

机译：基于氘 - 氘（D-D）中子发生器的爆炸检测系统蒙特卡罗模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An explosive detection system based on a Deuterium-Deuterium (D-D) neutron generator has been simulated using the Monte Carlo N-Partide Transport Code (MCNP5). Nuclear-based explosive detection methods can detect explosives by identifying their elemental components, especially nitrogen. Thermal neutron capture reactions have been used for detecting prompt gamma emission (10.82 MeV) following radiative neutron capture by 14N nuclei. The explosive detection system was built based on a fully high-voltage-shielded, axial D-D neutron generator with a radio frequency (RF) driven ion source and nominal yield of about 1010 fast neutrons per second (￡=2.5 MeV). Polyethylene and paraffin were used as moderators with borated polyethylene and lead as neutron and gamma ray shielding, respectively. The shape and the thickness of the moderators and shields are optimized to produce the highest thermal neutron flux at the position of the explosive and the minimum total dose at the outer surfaces of the explosive detection system walls. In addition, simulation of the response functions of Nal, BGO, and LaBr3-based y-ray detectors to different explosives is described.
机译：使用Monte Carlo N-Partide传输代码（MCNP5）模拟了基于氘-Deuterium（D-D）中子发生器的爆炸检测系统。核基爆炸性检测方法可以通过鉴定其元素组分，尤其是氮气来检测炸药。热中子捕获反应用于检测辐射中子后的提示伽马发射（10.82mev）捕获14N核。爆炸检测系统基于完全高压屏蔽的轴向D-D中子发生器构建，射频（RF）驱动离子源和每秒约1010个快上的标称收益率（£= 2.5meV）。将聚乙烯和石蜡用作具有硼酸化聚乙烯的中间体，分别作为中子和伽马射线屏蔽。主持人和屏蔽的形状和厚度经过优化，以在爆炸物的位置和爆炸检测系统壁的外表面处的最小总剂量的最高热中子通量。另外，描述了NAL，BGO和Labr3的Y射线探测器对不同炸药的响应功能的模拟。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号