Particle simulation of electromagnetic emissions from electrostatic instability driven by an electron ring beam on the density gradient

This paper presents the wave mode conversion between electrostatic and electromagnetic waves on the plasma density gradient. We use 2-D electromagnetic code KEMPO2 implemented with the generation of density gradient to simulate such a conversion process. In the dense region, we use ring beam instability to generate electron Bernstein waves and we study the temporal evolution of wave spectra, velocity distributions, Poynting flux, and electric and magnetic energies to observe the wave mode conversion. Such a conversion process can be a source of electromagnetic emissions which are routinely measured by spacecraft on the plasmapause density gradient.

[1]  W. Miloch,et al.  Numerical heating of electrons in particle-in-cell simulations of fully magnetized plasmas. , 2017, Physical review. E.

[2]  L. Daldorff,et al.  Electrostatic electron cyclotron instabilities near the upper hybrid layer due to electron ring distributions , 2016 .

[3]  Y. Katoh,et al.  Study of a condition for the mode conversion from purely perpendicular electrostatic waves to electromagnetic waves , 2016 .

[4]  K. Papadopoulos,et al.  Simulations of ionospheric turbulence produced by HF heating near the upper hybrid layer , 2016 .

[5]  Y. Katoh,et al.  The role of deviation of magnetic field direction on the beaming angle: Extending of beaming angle theory , 2016 .

[6]  Kaijun Liu,et al.  Proton velocity ring‐driven instabilities in the inner magnetosphere: Linear theory and particle‐in‐cell simulations , 2016 .

[7]  K. Glassmeier,et al.  Ion Bernstein waves in the magnetic reconnection region , 2015 .

[8]  V. Fedun,et al.  Oblique Bernstein Mode Generation Near the Upper-hybrid Frequency in Solar Pre-flare Plasmas , 2015 .

[9]  Satyavir Singh,et al.  Electromagnetic ion cyclotron waves in the Earth's magnetosphere with a kappa‐Maxwellian particle distribution , 2015 .

[10]  Y. Ogawa,et al.  Direct observation of transition to electron Bernstein waves from electromagnetic mode by three mode-conversion scenarios in the dipole confinement torus plasma , 2015 .

[11]  I. Cairns,et al.  Linear mode conversion of Langmuir/z-mode waves to radiation in plasmas with various magnetic field strength , 2013 .

[12]  T. Ono,et al.  A Simulation Study of the Plasma Wave Enhancements in the Earth’s Equatorial Plasmasphere , 2013 .

[13]  A. Kumamoto,et al.  Simulation of mode conversion process from upper-hybrid waves to LO-mode waves in the vicinity of the plasmapause , 2010 .

[14]  O. Santolík,et al.  Possible wave modes of wideband nonthermal continuum radiation in its source region , 2010 .

[15]  H. Carlson,et al.  Optical ring formation and ionization production in high‐power HF heating experiments at HAARP , 2009 .

[16]  P. Canu,et al.  Medium‐latitude sources of plasmaspheric nonthermal continuum radiations observed close to harmonics of the electron gyrofrequency , 2008 .

[17]  O. Santolík,et al.  Systematic analysis of equatorial noise below the lower hybrid frequency , 2004 .

[18]  Ondrej Santolik,et al.  Singular value decomposition methods for wave propagation analysis , 2003 .

[19]  L. Storey,et al.  Magnetic component of narrowband ion cyclotron waves in the auroral zone , 2002 .

[20]  G. Stenberg,et al.  Wave mode identification via wave distribution function analysis , 2001 .

[21]  H. Matsumoto,et al.  Competing processes of plasma wave instabilities driven by an anisotropic electron beam: Linear results and two-dimensional particle simulations , 1996 .

[22]  T. Bell,et al.  Electrostatic lower hybrid waves excited by electromagnetic whistler mode waves scattering from planar magnetic‐field‐aligned plasma density irregularities , 1990 .

[23]  D. Gurnett,et al.  Escaping nonthermal continuum radiation , 1981 .

[24]  W. Kurth,et al.  Superthermal electrons and Bernstein waves in Jupiter's inner magnetosphere , 1980 .

[25]  M. Ashour‐Abdalla,et al.  Observations of a free-energy source for intense electrostatic waves. [in upper atmosphere near upper hybrid resonance frequency] , 1980 .

[26]  D. Gurnett,et al.  Electrostatic waves in the Jovian magnetosphere , 1980 .

[27]  D. Gurnett,et al.  Intense electrostatic waves near the upper hybrid resonance frequency. Progress report , 1978 .

[28]  D. Gurnett.  The Earth as a radio source: The nonthermal continuum , 1974 .

[29]  H. Oya.  Conversion of Electrostatic Plasma Waves into Electromagnetic Waves: Numerical Calculation of the Dispersion Relation for All Wavelengths , 1971 .