Open AccessStimulated electromagnetic emissions spectrum observed during an X‐mode heating experiment at the European Incoherent Scatter Scientific Association
Author(s) -
Wang Xiang,
Zhou Chen,
Xu Tong,
Honary Farideh,
Rietveld Michael,
Frolov Vladimir
Publication year - 2019
Publication title -
earth and planetary physics
Language(s) - English
Resource type - Journals
ISSN - 2096-3955
DOI - 10.26464/epp2019042
Subject(s) - ionosphere , incoherent scatter , mode (computer interface) , transmitter , physics , electromagnetic radiation , overshoot (microwave communication) , spectral line , computational physics , optics , geophysics , telecommunications , engineering , computer science , channel (broadcasting) , astronomy , operating system
An extraordinary (X‐mode) electromagnetic wave, injected into the ionosphere by the ground‐based heating facility at Tromsø, Norway, was utilized to modify the ionosphere on November 6, 2017. The high‐power high‐frequency transmitter facility located at Tromsø belongs to the European Incoherent Scatter Scientific Association. In the experiment, stimulated electromagnetic emission (SEE) spectra were observed. A narrow continuum occurred under cold‐start conditions and showed an overshoot effect lasting several seconds. Cascading peaks occurred on both sides of the heating frequency only in the preconditioned ionosphere and also showed an overshoot effect. These SEE features are probably related to the ponderomotive process in the X‐mode heating experiment and are helpful for understanding the physical mechanism that generated them during the X‐mode heating experiment. The features observed in the X‐mode heating experiments are novel and require further investigation.