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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Autores principales:	I. S. Elkamash, I. Kourakis
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8c49ab478eb64e079253609594a765f0
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spelling	oai:doaj.org-article:8c49ab478eb64e079253609594a765f02021-12-02T11:39:33ZElectrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons10.1038/s41598-021-85228-z2045-2322https://doaj.org/article/8c49ab478eb64e079253609594a765f02021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85228-zhttps://doaj.org/toc/2045-2322Abstract 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.I. S. ElkamashI. KourakisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q I. S. Elkamash I. Kourakis Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons
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.
format	article
author	I. S. Elkamash I. Kourakis
author_facet	I. S. Elkamash I. Kourakis
author_sort	I. S. Elkamash
title	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_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_sort	electrostatic wave breaking limit in a cold electronegative plasma with non-maxwellian electrons
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8c49ab478eb64e079253609594a765f0
work_keys_str_mv	AT iselkamash electrostaticwavebreakinglimitinacoldelectronegativeplasmawithnonmaxwellianelectrons AT ikourakis electrostaticwavebreakinglimitinacoldelectronegativeplasmawithnonmaxwellianelectrons
_version_	1718395712321880064

Electrostatic wave breaking limit in a cold electronegative plasma with non-Maxwellian electrons

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