Вплив фазової швидкості повільної моди на нелінійні хвильові структури у двотемпературній неізотермічній плазмі
In a collisionless, unmagnetized and non-relativistic plasma consisting of warm adiabatic positive and negative ions, warm isothermal positrons and two-temperature non-isothermal electrons, slow mode non-linear wave structures are investigated by the Sagdeev pseudopotential method. The “dispersion r...
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| Date: | 2026 |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Publishing house "Academperiodika"
2026
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| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2023824 |
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| Journal Title: | Ukrainian Journal of Physics |
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Ukrainian Journal of Physics| Summary: | In a collisionless, unmagnetized and non-relativistic plasma consisting of warm adiabatic positive and negative ions, warm isothermal positrons and two-temperature non-isothermal electrons, slow mode non-linear wave structures are investigated by the Sagdeev pseudopotential method. The “dispersion relation” is derived from the basic set of normalized fluid equations under the condition of solitary wave solutions and the slow mode phase velocity (VS) is then obtained analytically. The effect of the normalized phase velocity (VS) on large amplitude slow mode solitons and small amplitude slow mode double layers is comprehensively analyzed using the profiles of the Sagdeev potential function ψ(ϕ), first- (ϕ1) and second-order (ϕ2) solitarywave solutions and the double layer solutions ϕDL in a two-temperature non-isothermal electron plasma. |
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| DOI: | 10.15407/ujpe71.6.505 |