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Impact of non-thermal electrons on spatial damping: a kinetic model for the parallel propagating modes

  • Muhammad Sarfraz EMAIL logo , Gohar Abbas , Hashim Farooq and I. Zeba
Published/Copyright: May 28, 2021
Zeitschrift für Naturforschung A
From the journal Zeitschrift für Naturforschung A Volume 76 Issue 8

Abstract

A sequence of in situ measurements points the presence of non-thermal species in the profile of particle distributions. This study highlights the role of such energetic electrons on the wave-spectrum. Using Vlasov–Maxwell’s model, the dispersion relations of the parallel propagating modes along with the space scale of damping are discussed using non-relativistic bi-Maxwellian and bi-Kappa distribution functions under the weak field approximation, i.e., ω−k.v>Ω0. Power series and asymptotic expansions of plasma dispersion functions are performed to derive the modes and spatial damping of waves, respectively. The role of these highly energetic electrons is illustrated on real frequency and anomalous damping of R and L-modes which is in fact controlled by the parameter κ in the dispersion. Further, we uncovered the effect of external magnetic field and thermal anisotropy on such spatial attenuation. In global perspective of the kinetic model, it may be another step.

Keywords: kappa distribution; plasma; spatial damping
Corresponding author: Muhammad Sarfraz, Department of Physics, GC University Lahore, Katchery Road, Lahore54000, Pakistan, E-mail:

  1. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-12-23
Revised: 2021-05-08
Accepted: 2021-05-10
Published Online: 2021-05-28
Published in Print: 2021-08-26

© 2021 Walter de Gruyter GmbH, Berlin/Boston

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https://doi.org/10.1515/zna-2020-0352
Keywords for this article
kappa distribution; plasma; spatial damping

Articles in the same Issue

  1. Frontmatter
  2. General
  3. Temperature-insensitive intensity-modulation liquid refractive index sensor based on fiber-optic Michelson probe structure
  4. Dynamical Systems & Nonlinear Phenomena
  5. Impact of non-thermal electrons on spatial damping: a kinetic model for the parallel propagating modes
  6. Role of entropy in ηi-mode driven nonlinear structures obtained by homotopy perturbation method in electron–positron–ion plasma
  7. Study of ferrofluid flow and heat transfer between cone and disk
  8. Solid State Physics & Materials Science
  9. Structural, electronic, magnetic and mechanical properties of the full-Heusler compounds Ni2Mn(Ge,Sn) and Mn2NiGe
  10. Exothermic behaviour of aluminium and graphene as a fuel in Fe2O3 based nanothermite
  11. Surface levels of organic conductors in a tilted in-plane magnetic field
  12. Thermodynamics & Statistical Physics
  13. Adiabatic compressibility of biphasic salt melts
  14. Stochastic thermodynamics of a finite quantum system coupled to a heat bath
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