Determination of Neutron Detectors Shield Used for the Detection of Landmines
Iranian journal of science and technology Transactions A, Science/Iranian journal of science and technology Transaction A, Science(2008)
摘要
As a result of being hydrogenous moderators, several landmine detection methods based on nuclear techniques have been suggested in recent years. Because of elastic scattering and moderating neutrons from hydrogen atoms in landmines, detection of backscattered neutron shows an anomaly in the reflected thermal neutrons count when a detector scans over a mine. On landmine detection using neutron sources, a detector and its shielding play an important role. In this paper, based on the investigations and calculations performed by MCNP code (Monte Carlo N-Particle transport code), detector shielding materials and their thicknesses have been determined. Therefore, the effects of moderators such as graphite, heavy water, beryllium, polyethylene and boric acid on backscattered neutron flux have been investigated.
更多查看译文
关键词
MCNP,shielding,detection,landmine,Am-Be,neutron backscattering,polyethylene,boric acid
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要