Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus Waves
Abstract Chorus waves induce both electron acceleration and loss. In this letter, we provide significantly improved models of electron lifetime due to interactions with chorus waves. The new models fill the gap that previous models have on some magnetic local time (MLT) sectors of the Earth's m...
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| Format: | Article |
| Language: | English |
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Wiley
2024-10-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2023GL107991 |
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| author | Dedong Wang Yuri Y. Shprits Bernhard Haas Alexander Y. Drozdov |
| author_facet | Dedong Wang Yuri Y. Shprits Bernhard Haas Alexander Y. Drozdov |
| author_sort | Dedong Wang |
| collection | DOAJ |
| description | Abstract Chorus waves induce both electron acceleration and loss. In this letter, we provide significantly improved models of electron lifetime due to interactions with chorus waves. The new models fill the gap that previous models have on some magnetic local time (MLT) sectors of the Earth's magnetosphere. This improvement is critical for modeling studies. The lifetime models developed using two different methods are valid for electrons with an energy range from 1 keV to 2 MeV. To facilitate the integration of these new models into different ring current and radiation belt codes, we parameterize the electron lifetime as a function of L‐shell and electron kinetic energy at each MLT and geomagnetic activity (Kp). The parameterized electron lifetimes exhibit strong dependencies on L‐shell, MLT, and energy. Simulations using these new models demonstrate improved agreement with satellite observations compared to simulations using previous models, advancing our understanding of electron dynamics in the magnetosphere. |
| format | Article |
| id | doaj-art-1ac5c7d71ea0409ca7169f53826e46e4 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-1ac5c7d71ea0409ca7169f53826e46e42025-08-20T02:04:21ZengWileyGeophysical Research Letters0094-82761944-80072024-10-015119n/an/a10.1029/2023GL107991Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus WavesDedong Wang0Yuri Y. Shprits1Bernhard Haas2Alexander Y. Drozdov3Section Space Physics and Space Weather GFZ German Research Centre for Geosciences Potsdam GermanySection Space Physics and Space Weather GFZ German Research Centre for Geosciences Potsdam GermanySection Space Physics and Space Weather GFZ German Research Centre for Geosciences Potsdam GermanyDepartment of Earth, Planetary, and Space Sciences University of California Los Angeles CA USAAbstract Chorus waves induce both electron acceleration and loss. In this letter, we provide significantly improved models of electron lifetime due to interactions with chorus waves. The new models fill the gap that previous models have on some magnetic local time (MLT) sectors of the Earth's magnetosphere. This improvement is critical for modeling studies. The lifetime models developed using two different methods are valid for electrons with an energy range from 1 keV to 2 MeV. To facilitate the integration of these new models into different ring current and radiation belt codes, we parameterize the electron lifetime as a function of L‐shell and electron kinetic energy at each MLT and geomagnetic activity (Kp). The parameterized electron lifetimes exhibit strong dependencies on L‐shell, MLT, and energy. Simulations using these new models demonstrate improved agreement with satellite observations compared to simulations using previous models, advancing our understanding of electron dynamics in the magnetosphere.https://doi.org/10.1029/2023GL107991radiation beltring currentchorus waveswave‐particle interactiondiffusion coefficientselectron lifetime |
| spellingShingle | Dedong Wang Yuri Y. Shprits Bernhard Haas Alexander Y. Drozdov Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus Waves Geophysical Research Letters radiation belt ring current chorus waves wave‐particle interaction diffusion coefficients electron lifetime |
| title | Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus Waves |
| title_full | Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus Waves |
| title_fullStr | Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus Waves |
| title_full_unstemmed | Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus Waves |
| title_short | Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus Waves |
| title_sort | improved lifetime model of energetic electrons due to their interactions with chorus waves |
| topic | radiation belt ring current chorus waves wave‐particle interaction diffusion coefficients electron lifetime |
| url | https://doi.org/10.1029/2023GL107991 |
| work_keys_str_mv | AT dedongwang improvedlifetimemodelofenergeticelectronsduetotheirinteractionswithchoruswaves AT yuriyshprits improvedlifetimemodelofenergeticelectronsduetotheirinteractionswithchoruswaves AT bernhardhaas improvedlifetimemodelofenergeticelectronsduetotheirinteractionswithchoruswaves AT alexanderydrozdov improvedlifetimemodelofenergeticelectronsduetotheirinteractionswithchoruswaves |