量子电子学报, 2018, 35 (1): 79, 网络出版: 2018-01-30
温度对电子辐照下聚酰亚胺表面充电的影响
Effect of temperature on surface charging of polyimide under electron irradiation
材料 平衡电位 表面充电 聚酰亚胺 温度 束流密度 materials balance potential surface charging polyimide temperature beam density
摘要
为了研究温度、等离子体环境变化对航天器表面介质材料充电水平的影响,利用研制的温度可控航天器介质材料表面带电综合实验系统,对聚酰亚胺材料进行了表面充电实验。结果表明:温度不变时, 聚酰亚胺表面充电平衡电位随束流密度的增大逐渐增大;束流密度不变时,聚酰亚胺表面充电平衡电位随温度升高逐渐减小。温度在243~ 363 K范围时,束流密度越大,温度变化对聚酰亚胺表面充电平衡 电位的影响越小;温度在243~ 273 K范围时,束流密度越大,温度变化对聚酰亚胺表面充电平衡电位的影响越大。
Abstract
In order to investigate effect of temperature and plasma environment change on charging level of spacecraft surface dielectric materials, the developed surface charging synthetic experimental system for dielectric materials of spacecraft, which is temperature controllable, is used to carry out surface charging experiment of polyimide materials. Results show that when temperature is constant, the surface charging balance potential of polyimide increases gradually with increasing of beam current density, and when the beam density is constant, it decreases gradually with increasing of temperature. When temperature ranges from 243 K to 363 K, the greater the beam density is, the smaller the effect of temperature change on polyimide surface charging balance potential will be. When the temperature ranges from 243 K to 273 K, the greater the beam density is, the greater the effect of temperature change on polyimide surface charge balance potential will be.
蒙志成, 孙永卫, 原青云, 王松, 刘浩, 周立栋. 温度对电子辐照下聚酰亚胺表面充电的影响[J]. 量子电子学报, 2018, 35(1): 79. MENG Zhicheng, SUN Yongwei, YUAN Qingyun, WANG Song, LIU Hao, ZHOU Lidong. Effect of temperature on surface charging of polyimide under electron irradiation[J]. Chinese Journal of Quantum Electronics, 2018, 35(1): 79.