原子能科学技术2017，Vol.51Issue(2)：223-229,7.DOI:10.7538/yzk.2017.51.02.0223
不同体积聚乙烯样品泄漏中子飞行时间谱测量与模拟研究
Measurement and Simulation of Neutron Leakage Spectrum with Different Sized Polyethylene Samples
摘要
Abstract
The neutron leakage spectra were measured at 60° by using time-of-flight (TOF) method from three different sizes of polyethylene samples.The measured spectra were compared with the calculated ones simulated with MCNP using three different models (simplified point detector model,complex point detector model,complicated ring detector model),respectively.The result shows that for small sized sample (φ13 cm× 6 cm),the calculated results from different models all agree well with experimental ones in n-p scattering peak.For large sized samples (30 cm× 30 cm× 6 cm,40 cm×40 cm × 6 cm),the calculated results from complicated ring detector model agree better with the experiment.This conclusion is very important for the next step benchmark experiment with large sized sample.关键词
飞行时间法/聚乙烯/泄漏中子飞行时间谱/T(d,n)4He脉冲中子源/MCNP程序Key words
time-of-flight method/polyethylene/neutron leakage spectrum/T (d,n)4He pulse neutron source/MCNP code分类
数理科学引用本文复制引用
丁琰琰,聂阳波,任杰,阮锡超,鲍杰,姚泽恩..不同体积聚乙烯样品泄漏中子飞行时间谱测量与模拟研究[J].原子能科学技术,2017,51(2):223-229,7.基金项目
国家自然科学基金青年基金资助项目(11505297) （11505297）
