1-D particle-in-cell simulations of electron acoustic solitary structures in an electron beam-plasma

A. A. Abid, Quanming Lu, M. N.S. Qureshi, X. L. Gao, Huayue Chen, K. H. Shah, Shui Wang

Research output: Contribution to journalArticle

Abstract

Electrostatic solitary (ES) structures have been frequently observed in the solar wind, Earth’s and other planetary magnetosphere and are the most widely theoretically studied waves in literature. However, there are very few studies in which simulations and theoretical studies have been performed simultaneously. In this paper, we perform 1-D electrostatic Particle-in-Cell (PIC) simulations of electrostatic solitary (ES) waves in a plasma which consists of immobile ions, and cold, beam and hot electrons. It is found that for a small value of electron beam velocity, ES structures are formed due to the steepening of initially quasi monochromatic electron acoustic (EA) waves. We interpret these ES structures as electron acoustic solitary (EAS) structures, which agree with the rarefactive (negative electrostatic potential) electron acoustic solitary structures obtained theoretically as a solution of the Korteweg de-Vries (KdV) equation. We found that polarity of solitary structures depends on the drift velocity of electron beam and formation of electric field spikes are consistent with the ES waves observations from Earth’s magnetosphere.

Original languageEnglish
Article number025029
JournalAIP Advances
Volume9
Issue number2
DOIs
Publication statusPublished - 01-02-2019

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electron beams
electrostatics
acoustics
cells
electrons
simulation
solitary waves
planetary magnetospheres
Earth magnetosphere
hot electrons
spikes
solar wind
polarity
electric fields
ions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Abid, A. A. ; Lu, Quanming ; Qureshi, M. N.S. ; Gao, X. L. ; Chen, Huayue ; Shah, K. H. ; Wang, Shui. / 1-D particle-in-cell simulations of electron acoustic solitary structures in an electron beam-plasma. In: AIP Advances. 2019 ; Vol. 9, No. 2.
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1-D particle-in-cell simulations of electron acoustic solitary structures in an electron beam-plasma. / Abid, A. A.; Lu, Quanming; Qureshi, M. N.S.; Gao, X. L.; Chen, Huayue; Shah, K. H.; Wang, Shui.

In: AIP Advances, Vol. 9, No. 2, 025029, 01.02.2019.

Research output: Contribution to journalArticle

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AU - Lu, Quanming

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AU - Gao, X. L.

AU - Chen, Huayue

AU - Shah, K. H.

AU - Wang, Shui

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