Последние новости
Поздравляем с Днём Победы!
08.05.2026
Полезные ссылки
Сообщение о землетрясении
Если Вы ощутили землетрясение, пожалуйста, сообщите о нёмFormation of Resonant Scattering on Excited Ions of Oxygen and Nitrogen Atoms in Lidar Studies of the Atmosphere
- Federal State Budget Research Institution Institute of Cosmophysical Research and Radio Wave Propagation, Far Eastern Branch of the Russian Academy of Sciences
Abstract—The results of the analysis of lidar data obtained in Kamchatka (53° N, 158° E) in 2008–2022 are
presented. Atmospheric sounding was carried out in the altitude range of 25–600 km at wavelengths of 532
and 561 nm. The appearance of increased scattering in the altitude range of 200–400 km was detected. It is
shown that it is caused by resonant scattering on excited ions of nitrogen and oxygen atoms. Under night con-
ditions, such ions are created in the process of ionization of the main gas components of the atmosphere
during the precipitation of energetic electrons. It is shown that the process of excitation of ions in the ground
state does not play any significant role in the formation of the lidar signal. Resonant scattering at these alti-
tudes appears in the process of ionization of the main gas components—N2 , O2, and O. A mechanism for the
formation of a lidar signal of resonant scattering on excited ions is proposed. A general scheme is proposed
for assessing the potential efficiency of laser radiation when choosing a wavelength for lidar research of the
atmosphere. The meaning of the scattering coefficient in the thermosphere is discussed.
Bychkov, V.V. Formation of Resonant Scattering on Excited Ions of Oxygen and Nitrogen Atoms in Lidar Studies of the Atmosphere. Cosmic Res 63 (Suppl 1), S289–S296 (2025). https://doi.org/10.1134/S001095252560221X
