Numerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heating
Parametric decay instability (PDI) is an important process in ionospheric heating. This paper focuses on the frequency and wavevector matching condition in the initial PDI process, the subsequent cascade stage, and the generation of strong Langmuir turbulence. A more general numerical model is estab...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Science Press
2022-08-01
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| Series: | Earth and Planetary Physics |
| Subjects: | |
| Online Access: | http://www.eppcgs.org/article/doi/10.26464/epp2022043?pageType=en |
| _version_ | 1811183382074228736 |
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| author | MoRan Liu Chen Zhou Ting Feng Xiang Wang ZhengYu Zhao |
| author_facet | MoRan Liu Chen Zhou Ting Feng Xiang Wang ZhengYu Zhao |
| author_sort | MoRan Liu |
| collection | DOAJ |
| description | Parametric decay instability (PDI) is an important process in ionospheric heating. This paper focuses on the frequency and wavevector matching condition in the initial PDI process, the subsequent cascade stage, and the generation of strong Langmuir turbulence. A more general numerical model is established based on Maxwell equations and plasma dynamic equations by coupling high-frequency electromagnetic waves to low-frequency waves via ponderomotive force. The primary PDI, cascade process, and strong Langmuir turbulence are excited in the simulation. The matching condition in the initial PDI stage and cascade process is verified. The result indicates that the cascade ion acoustic wave may induce or accelerate the formation of cavitons and lead to the wavenumber spectrum being more enhanced at 2kL (where kL is the primary Langmuir wavenumber). The wavenumber spectra develop from discrete to continuous spectra, which is attributed to the caviton collapse and strong Langmuir turbulence. |
| first_indexed | 2024-04-11T09:46:45Z |
| format | Article |
| id | doaj.art-c14a46f8832b43b48eb0055651f3a124 |
| institution | Directory Open Access Journal |
| issn | 2096-3955 |
| language | English |
| last_indexed | 2024-04-11T09:46:45Z |
| publishDate | 2022-08-01 |
| publisher | Science Press |
| record_format | Article |
| series | Earth and Planetary Physics |
| spelling | doaj.art-c14a46f8832b43b48eb0055651f3a1242022-12-22T04:30:58ZengScience PressEarth and Planetary Physics2096-39552022-08-016547448610.26464/epp2022043RA322-liumoran-FNumerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heatingMoRan Liu0Chen Zhou1Ting Feng2Xiang Wang3ZhengYu Zhao4Department of Space Physics, School of Electronic Information, Wuhan University, Wuhan 430072, ChinaDepartment of Space Physics, School of Electronic Information, Wuhan University, Wuhan 430072, ChinaDepartment of Space Physics, School of Electronic Information, Wuhan University, Wuhan 430072, ChinaSchool of Computer Science and Information Engineering, Hubei University, Wuhan 430011, ChinaDepartment of Space Physics, School of Electronic Information, Wuhan University, Wuhan 430072, ChinaParametric decay instability (PDI) is an important process in ionospheric heating. This paper focuses on the frequency and wavevector matching condition in the initial PDI process, the subsequent cascade stage, and the generation of strong Langmuir turbulence. A more general numerical model is established based on Maxwell equations and plasma dynamic equations by coupling high-frequency electromagnetic waves to low-frequency waves via ponderomotive force. The primary PDI, cascade process, and strong Langmuir turbulence are excited in the simulation. The matching condition in the initial PDI stage and cascade process is verified. The result indicates that the cascade ion acoustic wave may induce or accelerate the formation of cavitons and lead to the wavenumber spectrum being more enhanced at 2kL (where kL is the primary Langmuir wavenumber). The wavenumber spectra develop from discrete to continuous spectra, which is attributed to the caviton collapse and strong Langmuir turbulence.http://www.eppcgs.org/article/doi/10.26464/epp2022043?pageType=enionospheric electromagnetic propagationparametric decay instabilitycascadelangmuir turbulence |
| spellingShingle | MoRan Liu Chen Zhou Ting Feng Xiang Wang ZhengYu Zhao Numerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heating Earth and Planetary Physics ionospheric electromagnetic propagation parametric decay instability cascade langmuir turbulence |
| title | Numerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heating |
| title_full | Numerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heating |
| title_fullStr | Numerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heating |
| title_full_unstemmed | Numerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heating |
| title_short | Numerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heating |
| title_sort | numerical study on matching conditions of langmuir parametric instability and the formation of langmuir turbulence in ionospheric heating |
| topic | ionospheric electromagnetic propagation parametric decay instability cascade langmuir turbulence |
| url | http://www.eppcgs.org/article/doi/10.26464/epp2022043?pageType=en |
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