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

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.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 velocit...

[1]  W. Masood,et al.  Electron acoustic nonlinear structures in planetary magnetospheres , 2018 .

[2]  F. Mozer,et al.  Electron-acoustic solitary waves in the Earth's inner magnetosphere , 2018 .

[3]  G. Reeves,et al.  Electron‐acoustic solitons and double layers in the inner magnetosphere , 2017 .

[4]  P. H. Sakanaka,et al.  Formation of solitary waves and oscillatory shocklets in a two-temperature electron κ–distributed plasma , 2017 .

[5]  V. Krasnoselskikh,et al.  Generation of nonlinear electric field bursts in the outer radiation belt through the parametric decay of whistler waves , 2015 .

[6]  R. Merlino,et al.  Laboratory observations of self-excited dust acoustic shocks. , 2009, Physical review letters.

[7]  J. Tao,et al.  Perpendicular electric field in two‐dimensional electron phase‐holes: A parameter study , 2008 .

[8]  G. Lakhina,et al.  Generation mechanism for electron acoustic solitary waves , 2007 .

[9]  T. Cattaert,et al.  Compressive and Rarefactive Electron-Acoustic Solitons and Double Layers in Space Plasmas , 2005 .

[10]  S. El-Labany,et al.  Higher-order contribution to obliquely nonlinear electron-acoustic waves with electron beam in a magnetized plasma , 2005 .

[11]  X. Dou,et al.  Electrostatic waves in an electron-beam plasma system , 2005 .

[12]  P. Kintner,et al.  Nonlinear Processes in Geophysics Solitary Potential Structures Observed in the Magnetosheath by the Cluster Spacecraft , 2022 .

[13]  DongSheng Cai,et al.  Implementation of parallel plasma particle-in-cell codes on PC cluster , 2001 .

[14]  Y. Khotyaintsev,et al.  Electron-acoustic solitons in an electron-beam plasma system , 2000 .

[15]  R. Ergun,et al.  Properties of fast solitary structures , 1999 .

[16]  S. Knowlton,et al.  Solitary potential structures associated with ion and electron beams near , 1999 .

[17]  A. Mangeney,et al.  WIND observations of coherent electrostatic waves in the solar wind , 1999 .

[18]  S. Bale,et al.  Bipolar electrostatic structures in the shock transition region: Evidence of electron phase space holes , 1998 .

[19]  David Klumpar,et al.  FAST satellite observations of large‐amplitude solitary structures , 1998 .

[20]  P. Kintner,et al.  POLAR observations of coherent electric field structures , 1998 .

[21]  Minoru Tsutsui,et al.  Electrostatic solitary waves (ESW) in the magnetotail: BEN wave forms observed by GEOTAIL , 1994 .

[22]  M. Hellberg,et al.  Higher-order electron modes in a two-electron-temperature plasma , 1990, Journal of Plasma Physics.

[23]  Robert L. Tokar,et al.  The electron‐acoustic mode , 1985 .

[24]  Robert L. Tokar,et al.  Electrostatic hiss and the beam driven electron acoustic instability in the dayside polar cusp , 1984 .

[25]  D. Montgomery.  EVOLUTION OF A NONLINEAR ION ACOUSTIC WAVE. , 1967 .