中子探测器慢化效率：蒙特卡罗模拟、实验验证与角度依赖性
The efficiency of moderating neutron detector: Monte Carlo simulation, experimental validation, and angular dependence
- Ohio University（俄亥俄大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文通过蒙特卡罗模拟与实验验证了4π聚乙烯慢化探测器的中子探测效率，并提出基于勒让德分解的新方法，以从单次模拟中提取效率对角度分布的依赖信息。
AI中文摘要：
本文描述了在4π聚乙烯慢化探测器中中子探测效率的蒙特卡罗模拟与实验验证。实验验证使用了多种中子源，其能量范围从几十keV到14 MeV。采用MCNP6代码进行的蒙特卡罗模拟被认为在6 MeV以下中子能量范围内精度在3%以内。本文还提出了一种新方法，用于参数化束内实验中效率对中子角度分布的依赖性。该方法利用效率的勒让德分解，并允许从单次模拟中提取所有所需信息。
英文摘要：
This paper describes the Monte Carlo simulation and experimental validation of the neutron detection efficiency in a 4pi polyethylene moderating detector. The experimental validation was performed using several sources providing neutron energies from 10s of keV up to 14 MeV. The Monte Carlo simulations employed the MCNP6 code are believed to be accurate within 3% for neutron energies below 6 MeV. A new method for parametrizing the dependence of the efficiency on the neutron angular distribution for in-beam experiments is also presented. This approach utilizes a Legendre decomposition of the efficiency and allows all of the needed information to be extracted from a single simulation.
