10.57647/j.jtap.2024.1806.75

Current filamentation instability of diluted electron beam in F-region of the ionosphere

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  • Samira Tajiknezhad*1,
  • Ameneh Kargarian2,
  • Kamal Hajisharifi3,
  1. Department of Physics, Faculty of Sciences, Gonbad Kavous University, Gonbad Kavous, Iran
  2. Plasma and Fusion Research School, Nuclear and Science Technology Research Institute, Tehran, Iran
  3. Department of Physics and Institute for Plasma Research, Kharazmi University, Tehran, Iran
Current filamentation instability of diluted electron beam in F-region of the ionosphere

Received: 2024-08-14

Revised: 2024-10-19

Accepted: 2024-10-26

Published in Issue 2024-12-30

Copyright (c) -1 Samira Tajiknezhad, Ameneh Kargarian, Kamal Hajisharifi (Author)

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

1.
Tajiknezhad S, Kargarian A, Hajisharifi K. Current filamentation instability of diluted electron beam in F-region of the ionosphere. J Theor Appl phys. 2024 Dec. 30;18(6):1-7. Available from: https://oiccpress.com/jtap/article/view/8331
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Abstract

The current filamentation instability is one of the important instabilities in the ionosphere which plays a significant role in the amplification of magnetic fields in the ionosphere, particularly when a solar wind electron beam encounters a weakly ionized plasma. In this paper, the current filamentation instability of the interaction of an electron beam with F region of the ionosphere and the growth rate of instability has been investigated. By solving the fluid description in the presence of binary collision terms between charged and neutral particles and using the local approximation method, the dispersion relation of unstable mode has been obtained and the effect of magnetic field driven-destabilization and current-driven stabilization on the growth rate of instability has been studied. Results show the magnetic threshold for the current filamentation instability in the collisional magnetized ionosphere, in which the instability will disappear for a larger magnetic field than one. Studies show that the value of the magnetic threshold increases by increasing electron beam current density. These results could be important in the explanation of many phenomena that happened in the ionosphere.

Keywords

  • Current Filamentation instability,
  • Magnetic field,
  • Weakly ionized plasma,
  • Collision,
  • Dispersion relation
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