Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons
Abstract A one-dimensional multifluid hydrodynamic model has been adopted as basis for an investigation of the role of suprathermal electrons on the wave breaking amplitude limit for electrostatic excitations propagating in an electronegative plasma. A three-component plasma is considered, consistin...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-85228-z |
| _version_ | 1818845714362400768 |
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| author | I. S. Elkamash I. Kourakis |
| author_facet | I. S. Elkamash I. Kourakis |
| author_sort | I. S. Elkamash |
| collection | DOAJ |
| description | Abstract A one-dimensional multifluid hydrodynamic model has been adopted as basis for an investigation of the role of suprathermal electrons on the wave breaking amplitude limit for electrostatic excitations propagating in an electronegative plasma. A three-component plasma is considered, consisting of two inertial cold ion populations of opposite signs, evolving against a uniform background of (non-Maxwellian) electrons. A kappa-type (non-Maxwellian) distribution function is adopted for the electrons. By employing a traveling wave approximation, the first integral for the fluid-dynamical system has been derived, in the form of a pseudo-energy balance equation, and analyzed. The effect of intrinsic plasma parameters (namely the ion density ratio, the ion mass ratio, and the superthermal index of the nonthermal electrons) on the wave breaking amplitude limit is explored, by analyzing the phase space topology of the associated pseudopotential function. Our results are relevant to particle acceleration in Space environments and to recent experiments based on plasma-based accelerator schemes, where the simultaneous presence of negative ions and nonthermal electrons may be observed. |
| first_indexed | 2024-12-19T05:34:03Z |
| format | Article |
| id | doaj.art-8c49ab478eb64e079253609594a765f0 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T05:34:03Z |
| publishDate | 2021-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-8c49ab478eb64e079253609594a765f02022-12-21T20:34:09ZengNature PortfolioScientific Reports2045-23222021-03-0111111110.1038/s41598-021-85228-zElectrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electronsI. S. Elkamash0I. Kourakis1Physics Department, Faculty of Science, Mansoura UniversityMathematics Department, Khalifa University of Science and Technology, College of Science and EngineeringAbstract A one-dimensional multifluid hydrodynamic model has been adopted as basis for an investigation of the role of suprathermal electrons on the wave breaking amplitude limit for electrostatic excitations propagating in an electronegative plasma. A three-component plasma is considered, consisting of two inertial cold ion populations of opposite signs, evolving against a uniform background of (non-Maxwellian) electrons. A kappa-type (non-Maxwellian) distribution function is adopted for the electrons. By employing a traveling wave approximation, the first integral for the fluid-dynamical system has been derived, in the form of a pseudo-energy balance equation, and analyzed. The effect of intrinsic plasma parameters (namely the ion density ratio, the ion mass ratio, and the superthermal index of the nonthermal electrons) on the wave breaking amplitude limit is explored, by analyzing the phase space topology of the associated pseudopotential function. Our results are relevant to particle acceleration in Space environments and to recent experiments based on plasma-based accelerator schemes, where the simultaneous presence of negative ions and nonthermal electrons may be observed.https://doi.org/10.1038/s41598-021-85228-z |
| spellingShingle | I. S. Elkamash I. Kourakis Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons Scientific Reports |
| title | Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons |
| title_full | Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons |
| title_fullStr | Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons |
| title_full_unstemmed | Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons |
| title_short | Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons |
| title_sort | electrostatic wave breaking limit in a cold electronegative plasma with non maxwellian electrons |
| url | https://doi.org/10.1038/s41598-021-85228-z |
| work_keys_str_mv | AT iselkamash electrostaticwavebreakinglimitinacoldelectronegativeplasmawithnonmaxwellianelectrons AT ikourakis electrostaticwavebreakinglimitinacoldelectronegativeplasmawithnonmaxwellianelectrons |