Electron-acoustic solitary potential in nonextensive streaming plasma
Abstract The linear/nonlinear propagation characteristics of electron-acoustic (EA) solitons are examined in an electron-ion (EI) plasma that contains negative superthermal (dynamical) electrons as well as positively charged ions. By employing the magnetic hydrodynamic (MHD) equations and with the a...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-19206-4 |
| _version_ | 1798002986064019456 |
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| author | Khalid Khan Obaid Algahtani Muhammad Irfan Amir Ali |
| author_facet | Khalid Khan Obaid Algahtani Muhammad Irfan Amir Ali |
| author_sort | Khalid Khan |
| collection | DOAJ |
| description | Abstract The linear/nonlinear propagation characteristics of electron-acoustic (EA) solitons are examined in an electron-ion (EI) plasma that contains negative superthermal (dynamical) electrons as well as positively charged ions. By employing the magnetic hydrodynamic (MHD) equations and with the aid of the reductive perturbation technique, a Korteweg-de-Vries (KdV) equation is deduced. The latter admits soliton solution suffering from the superthermal electrons and the streaming flow. The utility of the modified double Laplace decomposition method (MDLDM) leads to approximate wave solutions associated with higher-order perturbation. By imposing finite perturbation on the stationary solution, and with the aid of MDLDM, we have deduced series solution for the electron-acoustic excitations. The latter admits instability and subsequent deformation of the wave profile and can’t be noticed in the KdV theory. Numerical analysis reveals that thermal correction due to superthermal electrons reduces the dimensionless phase speed $$(\bar{U}_{ph})$$ ( U ¯ ph ) for EA wave. Moreover, a random motion spread out the dynamical electron fluid and therefore, gives rise to $$\bar{U}_{ph}$$ U ¯ ph . A degree enhancement in temperature of superthermal (dynamical) electrons tappers of (increase) the wave steeping and the wave dispersion, enhancing (reducing) the pulse amplitude and the spatial extension of the EA solitons. Interestingly, the approximate wave solution suffers oscillation that grows in time. Our results are important for understanding the coherent EA excitation, associated with the streaming effect of electrons in the EI plasma being relevant to the earth’s magnetosphere, the ionosphere, the laboratory facilities, etc. |
| first_indexed | 2024-04-11T12:01:04Z |
| format | Article |
| id | doaj.art-a01e59f0ca474d4f9bd6490504733805 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T12:01:04Z |
| publishDate | 2022-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-a01e59f0ca474d4f9bd64905047338052022-12-22T04:24:52ZengNature PortfolioScientific Reports2045-23222022-09-0112111610.1038/s41598-022-19206-4Electron-acoustic solitary potential in nonextensive streaming plasmaKhalid Khan0Obaid Algahtani1Muhammad Irfan2Amir Ali3Department of Mathematics, University of MalakandDepartment of Mathematics, College of Sciences, King Saud UniversityDepartment of Physics, University of MalakandDepartment of Mathematics, University of MalakandAbstract The linear/nonlinear propagation characteristics of electron-acoustic (EA) solitons are examined in an electron-ion (EI) plasma that contains negative superthermal (dynamical) electrons as well as positively charged ions. By employing the magnetic hydrodynamic (MHD) equations and with the aid of the reductive perturbation technique, a Korteweg-de-Vries (KdV) equation is deduced. The latter admits soliton solution suffering from the superthermal electrons and the streaming flow. The utility of the modified double Laplace decomposition method (MDLDM) leads to approximate wave solutions associated with higher-order perturbation. By imposing finite perturbation on the stationary solution, and with the aid of MDLDM, we have deduced series solution for the electron-acoustic excitations. The latter admits instability and subsequent deformation of the wave profile and can’t be noticed in the KdV theory. Numerical analysis reveals that thermal correction due to superthermal electrons reduces the dimensionless phase speed $$(\bar{U}_{ph})$$ ( U ¯ ph ) for EA wave. Moreover, a random motion spread out the dynamical electron fluid and therefore, gives rise to $$\bar{U}_{ph}$$ U ¯ ph . A degree enhancement in temperature of superthermal (dynamical) electrons tappers of (increase) the wave steeping and the wave dispersion, enhancing (reducing) the pulse amplitude and the spatial extension of the EA solitons. Interestingly, the approximate wave solution suffers oscillation that grows in time. Our results are important for understanding the coherent EA excitation, associated with the streaming effect of electrons in the EI plasma being relevant to the earth’s magnetosphere, the ionosphere, the laboratory facilities, etc.https://doi.org/10.1038/s41598-022-19206-4 |
| spellingShingle | Khalid Khan Obaid Algahtani Muhammad Irfan Amir Ali Electron-acoustic solitary potential in nonextensive streaming plasma Scientific Reports |
| title | Electron-acoustic solitary potential in nonextensive streaming plasma |
| title_full | Electron-acoustic solitary potential in nonextensive streaming plasma |
| title_fullStr | Electron-acoustic solitary potential in nonextensive streaming plasma |
| title_full_unstemmed | Electron-acoustic solitary potential in nonextensive streaming plasma |
| title_short | Electron-acoustic solitary potential in nonextensive streaming plasma |
| title_sort | electron acoustic solitary potential in nonextensive streaming plasma |
| url | https://doi.org/10.1038/s41598-022-19206-4 |
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