电波科学学报2017，Vol.32Issue(4)：434-440,7.DOI:10.13443/j.cjors.2017021301
磁化电离层等离子体异常吸收效应研究
Anomalous absorption effect on magnetized plasma induced by ionospheric modification
摘要
Abstract
The amplitude anomalous absorption of an O-mode low-power diagnostic radio wave passing through the perturbed region in ionospheric modification is investigated.Kinetic theory and Vlasov equation describing electron dynamics are employed to derive the coefficient of anomalous absorption caused by artificial field-aligned irregularities,considering effects of a magnetic field on the dispersion relationship of EM waves and on motions of electrons in calculations of the displacement current density.With analytical expressions,variations of the anomalous absorption coefficient with the geomagnetic dip are calculated.It is shown that the coefficient increases with the geomagnetic dip until 70o,and then drops off slowly.With consideration of the geomagnetic field when calculating the HF conductivity,the coefficient is decreased and more obvious at high geomagnetic dip.关键词
电离层加热/异常吸收系数/磁化等离子体/动力学理论/地磁倾角Key words
ionospheric modification/anomalous absorption/magnetized plasma/Kinetic theory/geomagnetic dip分类
天文与地球科学引用本文复制引用
满莉,马广林,车海琴..磁化电离层等离子体异常吸收效应研究[J].电波科学学报,2017,32(4):434-440,7.基金项目
中国电科技术创新基金(KJ1602004) （KJ1602004）
