空间辐射效应地面模拟等效的关键基础问题  

Key Basic Issues in Equivalent Gound Simulation of Space Radiation Effects

作　　者：陈伟[1,2] 郭晓强[1,2] 姚志斌[1,2] 罗尹虹[1,2] 丁李利[1,2] 何宝平[1,2] 王祖军[1,2] 王晨辉[1,2] 王忠明[1,2] 丛培天[1,2] 

机构地区：[1]西北核技术研究所,西安710024 [2]强脉冲辐射环境模拟与效应国家重点实验室,西安710024

出　　处：《现代应用物理》2017年第2期1-12,共12页Modern Applied Physics

基　　金：国家自然科学基金资助项目(11690043;11235008)

摘　　要：空间辐射效应是影响航天器在轨长期可靠运行的重要因素,必须在地面利用模拟试验方法评价航天器在轨抗辐射性能。但由于地面模拟试验环境与空间真实辐射环境在能谱、粒子种类、辐照时间等方面存在较大差异,为此国内外已开展了大量的空间辐射损伤地面模拟试验方法研究。但在空间低剂量率辐射损伤增强效应的地面模拟试验方法、重离子能量与入射角度对单粒子效应试验方法和预估方法的影响、质子和反应堆中子位移损伤等效方法等方面还面临着诸多尚未解决的问题。本文从空间辐射环境和地面模拟试验环境的差异性出发,着重阐述了低剂量率辐射损伤增强效应、粒子能量与入射角度对单粒子效应的影响、空间位移效应地面模拟试验方法3个方面的研究现状和存在的问题,梳理给出辐射损伤天地等效试验需要解决的关键基础问题,为空间辐射效应地面模拟试验方法研究和完善提供参考。Space radiation effects is an important factor which affects the long-term reliability of spacecrafts.It is necessary to evaluate the hardness performance of spacecrafts with ground-level hardness assurance.Due to the great differences between ground environment and real space environment in energy spectrum,particle type,irradiation time and other aspects,lots of research on space hardness assurance has been carried out.However,many unresolved problems still exist,such as the hardness assurance of enhanced low dose rate sensitivity（ELDRS）,the influence of heavy ion energy and incident angle on single event effects test and prediction methods,the displacement damage equivalent methods of proton in space and neutron in nuclear reactor.In this paper,the difference of space radiation environment and simulated ground testing environment is introduced at first,then current research andunresolved problems are described for ELDRS,the relationship between energy and incident angle of heavy ions and single event effects,ground hardness assurance methods of space displacement,based on which key basic issues are pointed out for equivalent testing of space radiation damage on the ground,thus providing some clues for studying and improvement of methods for gound simulated testing of space radiation effects.

关 键 词：空间辐射 总剂量效应 单粒子效应 位移损伤效应 空间辐射损伤等效 

分 类 号：TN32[电子电信—物理电子学] TL81[核科学技术—核技术及应用]