空间科学学报2024，Vol.44Issue(2)：368-378,11.DOI:10.11728/cjss2024.02.2023-0038
极紫外光电效应电荷驱动仿真与试验验证
Simulation and Experimental Validation of Charge-driven Extreme Ultraviolet Photoelectric Effect
王子栋 1周斌2
作者信息
- 1. 中国科学院国家空间科学中心空间天气学国家重点实验室 北京 100190||中国科学院国家空间科学中心太阳活动与空间天气重点实验室 北京 100190||中国科学院大学 北京 100049
- 2. 中国科学院国家空间科学中心空间天气学国家重点实验室 北京 100190||中国科学院国家空间科学中心太阳活动与空间天气重点实验室 北京 100190
- 折叠
摘要
Abstract
The test masses of the inertial sensor is the core of the precision gravity measurement sys-tem.The surface of test masses accumulates charges due to continuous injection of high-energy particles from space,which generates stray noise under the action of the internal electromagnetic field of the sen-sor and affects the precision gravity measurement results.According to the principle of photoelectric ef-fect,use UV LED to generate extreme ultraviolet light to irradiate the electrodes of an inertial sensor and the surface of the test masses,and applying an appropriate electric field between the electrodes,it is possible to change the charge amount of the test masses without external forces and under non-contact conditions.Based on the simplified electrode model of the parallel plate capacitor,this paper carried out theoretical modeling and simulation of the extreme ultraviolet charge driving process.Based on this,a set of charge driving verification test system was designed and constructed,and experiments were car-ried out on the effects of light power and bias voltage on the charging and discharging rates and AC charge driving.The experiment proved that the charge-discharge rate is proportional to the extreme ul-traviolet light power,and its quantum yield changes with the electric field strength between the plates.Ultimately,a stable control of the test masses discharge rate between 0.31 pC⋅s-1 and 0.76 pC⋅s-1 and charge rate between-0.05 pC⋅s-1 and-0.17 pC⋅s-1 can be achieved.The theoretical model of charge-dis-charge rate proposed in this article for the test masses is consistent with the results of ground experi-ments,which can strongly support the development of charge management and control systems.关键词
极紫外光/电荷驱动/光电效应/建模仿真Key words
Extreme ultraviolet light/Charge driven/Photoelectric effect/Modeling and simulation分类
航空航天引用本文复制引用
王子栋,周斌..极紫外光电效应电荷驱动仿真与试验验证[J].空间科学学报,2024,44(2):368-378,11.
