Statistical Investigation of the Efficiency of EMIC Waves in Precipitating Relativistic Electrons

2018 ◽  
Vol 123 (8) ◽  
pp. 6223-6230 ◽  
Author(s):  
Murong Qin ◽  
Mary Hudson ◽  
Robyn Millan ◽  
Leslie Woodger ◽  
Sapna Shekhar
Keyword(s):  
Statistical Investigation ◽  
Relativistic Electrons ◽  
Emic Waves

scholarly journals Trapping and amplification of unguided mode EMIC waves in the radiation belt

2021 ◽  
Author(s):  
Geng Wang ◽  
Zhonglei Gao ◽  
Mingyu Wu ◽  
Guoqiang Wang ◽  
Sudong Xiao ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Abundance Ratio ◽  
Relativistic Electrons ◽  
Scattering Loss ◽  
Propagation Behavior ◽  
Guided Mode ◽  
Waves Propagation ◽  
Spatial Locations ◽  
First Time ◽  
Emic Waves

Abstract Electromagnetic ion cyclotron (EMIC) waves can cause the scattering loss of the relativistic electrons in the earth's radiation belt. They can be classified into the guided mode and the unguided mode, according to waves propagation behavior. The guided mode waves have been widely investigated in the radiation belt, but the observation of the unguided mode waves have not been expected. Based on the observations of Van Allen Probes, we demonstrate for the first time the existence of the intense unguided mode EMIC waves. The reflection interface formed by the spatial locations of local helium cutoff frequencies can be nearly parallel to the equatorial plane when the proton abundance ratio decreases sharply with L-shell. This structure combined with the anisotropic hot protons can lead to the trapping and significant amplification of the unguided mode waves. These results may help to understand the nature of EMIC waves in the radiation belt.

Resonant scattering of outer zone relativistic electrons by multiband EMIC waves and resultant electron loss time scales

2015 ◽  
Vol 120 (9) ◽  
pp. 7357-7373 ◽  
Author(s):  
Binbin Ni ◽  
Xing Cao ◽  
Zhengyang Zou ◽  
Chen Zhou ◽  
Xudong Gu ◽  
...  
Keyword(s):  
Time Scales ◽  
Outer Zone ◽  
Resonant Scattering ◽  
Relativistic Electrons ◽  
Electron Loss ◽  
Emic Waves

scholarly journals Investigating Loss of Relativistic Electrons Associated With EMIC Waves at Low L Values on 22 June 2015

2019 ◽  
Vol 124 (6) ◽  
pp. 4022-4036 ◽  
Author(s):  
Murong Qin ◽  
Mary Hudson ◽  
Zhao Li ◽  
Robyn Millan ◽  
Xiaochen Shen ◽  
...  
Keyword(s):  
Relativistic Electrons ◽  
Emic Waves

Combined scattering loss of radiation belt relativistic electrons by simultaneous three-band EMIC waves: A case study

2016 ◽  
Vol 121 (5) ◽  
pp. 4446-4451 ◽  
Author(s):  
Fengming He ◽  
Xing Cao ◽  
Binbin Ni ◽  
Zheng Xiang ◽  
Chen Zhou ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Relativistic Electrons ◽  
Scattering Loss ◽  
Emic Waves

scholarly journals Rapid Loss of Radiation Belt Relativistic Electrons by EMIC Waves

2017 ◽  
Vol 122 (10) ◽  
pp. 9880-9897 ◽  
Author(s):  
Zhenpeng Su ◽  
Zhonglei Gao ◽  
Huinan Zheng ◽  
Yuming Wang ◽  
Shui Wang ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Relativistic Electrons ◽  
Rapid Loss ◽  
Emic Waves
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