释放SF6气体改变电离层电子密度的实验研究

摘要

电离层受到自然或人工扰动后产生的电子密度变化会影响无线电的传播。实验模拟了人工释放SF6气体扰动电离层，通过对SF6气体在电离层中的扩散过程和相应的离子化学反应的分析，并结合实验测量，研究了电离层电子密度随SF6气体释放量的变化规律。实验结果表明：SF6气体在电离层高度释放后，电子密度显著减少，且减少量与气体释放量在一定范围内呈负指数关系。研究可为今后提高卫星通信保密性和实施通信干扰等应用提供理论依据。%The change of the electron density in the ionosphere due to the natural or artificial disturbances would influence the propagation of the electronic waves. In this paper, the ionospheric perturbation by the artificial SF6 gas release is simulated. In terms of the diffusion process of the SF6 gas and the relevant ion-chemistry reactions in the ionosphere together with experimental measurements, the density of the ionospheric electron varied with the mass flux of the SF6 gas released is determined. The results show that the depletion of the ionospheric electron density is remarkable after the release of the SF6 gas, and the electron density decreases exponentially with the SF6 gas flux released to some extent. The results can provide some guidance for future theoretical studies for enhancing satellite communication safety and implementing communication interference.