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目的调研地表和空勤航线中子辐射水平测量研究状况,研究天然中子对环境辐射的贡献。方法收集地空界面环境中子的来源及其研究文献报道的最新数据,研究比较国内外地空界面环境中子测量结果。结果在海平面水平来自宇宙射线辐射中子成份的周围剂量当量率为5.5 nSv·h~(-1),民用航空国际航线航行器上的中子剂量率为2.5μSv·h~(-1)。结论人们主要侧重于对人工中子源中子辐射场的理论研究、实验测量、应用和防护等,而目前国内外对地空界面上天然中子辐射场的研究较少,尚需深入研究。
Objective To investigate the research status of neutron radiation measurement on surface and ground flight routes and to study the contribution of natural neutrons to environmental radiation. Methods The sources of ground-air interface environment and the latest data reported in the research literature were collected, and the results of neutron-air interface environment neutron measurements at home and abroad were compared. Results At the sea level, the equivalent dose rate of neutrons from cosmic ray radiation was 5.5 nSv · h -1, and the neutron dose rate of civil aviation international route craft was 2.5 μSv · h -1. . Conclusions People mainly focus on theoretical research, experimental measurement, application and protection of artificial neutron source neutron radiation field. At present, there are few researches on the natural neutron radiation field at the air-ground interface at home and abroad, which needs further study.