Evaluation of Particle Scattering by Oxygen Ion Cyclotron Harmonic Waves in the Inner Magnetosphere
Abstract The scattering of charged particles by oxygen ion cyclotron harmonic (OCH) waves in the inner magnetosphere is investigated by evaluating the relevant quasi‐linear diffusion coefficients. Recent studies demonstrated that OCH waves are oxygen ion Bernstein modes and their complex kinetic dis...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-03-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL108261 |
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| author | Fei Yao Kaijun Liu Xiongdong Yu Zhigang Yuan Yan Wang Kyungguk Min |
| author_facet | Fei Yao Kaijun Liu Xiongdong Yu Zhigang Yuan Yan Wang Kyungguk Min |
| author_sort | Fei Yao |
| collection | DOAJ |
| description | Abstract The scattering of charged particles by oxygen ion cyclotron harmonic (OCH) waves in the inner magnetosphere is investigated by evaluating the relevant quasi‐linear diffusion coefficients. Recent studies demonstrated that OCH waves are oxygen ion Bernstein modes and their complex kinetic dispersion relation has made it challenging to assess their role in scattering charged particles. The present study calculates the quasi‐linear diffusion coefficients for the scattering of electrons and ions by OCH waves using their kinetic dispersion relation. The results show that OCH waves can effectively scatter electrons between ∼100 eV and 100s keV via Landau resonance. They are also capable of heating cold helium and oxygen ions through cyclotron resonances. Specially, it is found that the 4th harmonic of OCH waves can lead to effective heating of helium ions, while oxygen ions would interact more efficiently with lower harmonics of OCH waves. |
| format | Article |
| id | doaj-art-eaed862fcc874322be2f1e3d02bae3f0 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-eaed862fcc874322be2f1e3d02bae3f02025-08-20T03:49:37ZengWileyGeophysical Research Letters0094-82761944-80072024-03-01516n/an/a10.1029/2024GL108261Evaluation of Particle Scattering by Oxygen Ion Cyclotron Harmonic Waves in the Inner MagnetosphereFei Yao0Kaijun Liu1Xiongdong Yu2Zhigang Yuan3Yan Wang4Kyungguk Min5Department of Earth and Space Sciences Southern University of Science and Technology Shenzhen ChinaDepartment of Earth and Space Sciences Southern University of Science and Technology Shenzhen ChinaSchool of Electronic Information Wuhan University Wuhan ChinaSchool of Electronic Information Wuhan University Wuhan ChinaDepartment of Earth and Space Sciences Southern University of Science and Technology Shenzhen ChinaDepartment of Astronomy and Space Science Chungnam National University Daejeon South KoreaAbstract The scattering of charged particles by oxygen ion cyclotron harmonic (OCH) waves in the inner magnetosphere is investigated by evaluating the relevant quasi‐linear diffusion coefficients. Recent studies demonstrated that OCH waves are oxygen ion Bernstein modes and their complex kinetic dispersion relation has made it challenging to assess their role in scattering charged particles. The present study calculates the quasi‐linear diffusion coefficients for the scattering of electrons and ions by OCH waves using their kinetic dispersion relation. The results show that OCH waves can effectively scatter electrons between ∼100 eV and 100s keV via Landau resonance. They are also capable of heating cold helium and oxygen ions through cyclotron resonances. Specially, it is found that the 4th harmonic of OCH waves can lead to effective heating of helium ions, while oxygen ions would interact more efficiently with lower harmonics of OCH waves.https://doi.org/10.1029/2024GL108261oxygen ion cyclotron harmonic wavesquasi‐linear diffusion coefficientskinetic dispersion relationinner magnetospherecold ion heatingcyclotron resonance |
| spellingShingle | Fei Yao Kaijun Liu Xiongdong Yu Zhigang Yuan Yan Wang Kyungguk Min Evaluation of Particle Scattering by Oxygen Ion Cyclotron Harmonic Waves in the Inner Magnetosphere Geophysical Research Letters oxygen ion cyclotron harmonic waves quasi‐linear diffusion coefficients kinetic dispersion relation inner magnetosphere cold ion heating cyclotron resonance |
| title | Evaluation of Particle Scattering by Oxygen Ion Cyclotron Harmonic Waves in the Inner Magnetosphere |
| title_full | Evaluation of Particle Scattering by Oxygen Ion Cyclotron Harmonic Waves in the Inner Magnetosphere |
| title_fullStr | Evaluation of Particle Scattering by Oxygen Ion Cyclotron Harmonic Waves in the Inner Magnetosphere |
| title_full_unstemmed | Evaluation of Particle Scattering by Oxygen Ion Cyclotron Harmonic Waves in the Inner Magnetosphere |
| title_short | Evaluation of Particle Scattering by Oxygen Ion Cyclotron Harmonic Waves in the Inner Magnetosphere |
| title_sort | evaluation of particle scattering by oxygen ion cyclotron harmonic waves in the inner magnetosphere |
| topic | oxygen ion cyclotron harmonic waves quasi‐linear diffusion coefficients kinetic dispersion relation inner magnetosphere cold ion heating cyclotron resonance |
| url | https://doi.org/10.1029/2024GL108261 |
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