电波科学学报2026，Vol.41Issue(3)：556-561,6.DOI:10.12265/j.cjors.2025115
中性气体注入电离层激发低混杂波演化过程研究
Study on the evolutionary process of lower-hybrid wave excited by neutral gas injection into the ionosphere
摘要
Abstract
This paper focuses on the study of the two-dimensional spatiotemporal evolution characteristics of lower hybrid wave excitation by neutral gas injection into the ionosphere.Using water vapor injection as an example,a theoretical model is established,and the theoretical expression for the growth rate of the lower hybrid wave is derived.Based on this,the two-dimensional evolution of parameters such as propagation direction and amplitude of the lower hybrid wave in the ionosphere after excitation is studied as a function of time and space.The results show that the ion ring beam distribution formed by the charge exchange between the high-speed injected water vapor and the ionospheric oxygen ions is the primary factor in the excitation of the lower hybrid wave.Its growth rate is significantly influenced by factors such as the diffusion rate of the water vapor,the background plasma density,and the release altitude.The research findings reveal the spatiotemporal characteristics of lower hybrid wave excitation and propagation in the ionosphere,providing a theoretical basis for understanding space plasma wave-particle interactions,energy transport processes,and the assessment of space artificial perturbation effects.关键词
电离层/中性气体注入/低混杂波/增长率/离子环束Key words
ionosphere/neutral gas injection/lower hybrid wave/growth rate/ion ring beam分类
天文与地球科学引用本文复制引用
李敬敬,李辉,鲁智健,孙树计..中性气体注入电离层激发低混杂波演化过程研究[J].电波科学学报,2026,41(3):556-561,6.基金项目
中国电波传播研究所稳定支持科研经费(A132312217)Stabilized Support Research Funding from China Research Institute of Radiowave Propagation(A132312217) （A132312217）
