航天器表面材料紫外光电子发射产额理论模型发展及实验测试应用  

Theoretical model development and experimental test application for ultraviolet photoelectron emission yield of spacecraft surface materials

作　　者：辛文龙 侯潇涵 于钱[1] 沈自才[1] 郭雅丽 彭吉龙[1] 陈玉[2] XIN Wenlong;HOU Xiaohan;YU Qian;SHEN Zicai;GUO Yali;PENG Jilong;CHEN Yu(Beijing Institute of Spacecraft Environmental Engineering,Beijing 100094,China;School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]北京卫星环境工程研究所,北京100094 [2]西安交通大学电气工程学院,西安710049

出　　处：《航空材料学报》2024年第3期23-34,共12页Journal of Aeronautical Materials

基　　金：国家重点研发计划项目(2022YFF0705600)。

摘　　要：空间环境会对航天器在轨效能发挥产生强烈影响,紫外(ultraviolet,UV)辐射是其中的一个重要因素,它可以导致航天器表面材料的电荷积累和电荷放电。通过测量航天器表面材料的紫外光电子发射产额(photoelectron emission yield,PEEY),获得光电发射基本数据,进行表面带电仿真分析,是研究航天器表面材料带电问题的一个重要方法。本文首先介绍PEEY理论模型的发展,包括福勒-杜布里奇(Fowler-Dubridge,FD)模型、一步模型、基于三步光电发射理论的三步模型(three-step model,TSM)/蒙特卡罗(Monte Carlo,MC)模型以及基于矩的(momentsbased,MB)发射模型和量子模型(quantum model,QM),对各个模型的研究方法和适用条件进行分析对比,梳理PEEY模型的发展脉络。然后介绍PEEY的实验测试应用,包括国内外紫外光电子产额谱(UV-PEEY)仪器的发展和典型空间材料的PEEY实验研究,并着重讨论外界条件和表面条件对PEEY的影响,最后对空间表面材料PEEY的深入研究提出建议。The space environment strongly affects the on-orbit performance of spacecraft,and ultraviolet(UV)radiation is one of the important factors,which can lead to charge accumulation and charge discharge of spacecraft surface materials.The photoelectron emission yield(PEEY)of spacecraft surface materials is measured to obtain the basic data of photoemission and perform surface charging simulation analysis,which is an important method to study the charging problem of spacecraft surface materials.The paper firstly introduces the development of PEEY theoretical models,including the Fowler-Dubridge(FD)model,the one-step model,the three-step model(TSM)/Monte carlo(MC)model based on the three-step photoelectron emission theory,and the Moments-based(MB)emission model and quantum model(QM).The research methods and applicable conditions of each model are analyzed and compared,and the development of PEEY model is sorted out.Then the experimental test applications of PEEY,including the development of domestic and foreign ultraviolet photoelectron yield spectroscopy(UV-PEEY)instruments,the experimental study of PEEY for typical space materials are introduced,and the influence of external conditions and surface conditions on PEEY is focused on.Finally,the suggestions for in-depth research on PEEY for space surface materials are put forward.

关 键 词：航天器表面材料 光电子发射产额 量子效率 三步发射理论 理论模型 

分 类 号：V447.6[航空宇航科学与技术—飞行器设计]