scholarly journals On the spectra of natural waves in a plasma waveguide in the presence of collisions

2021 ◽  
pp. 25-31
Author(s):  
Sergei Dvinin ◽  
Oleg Sinkevich ◽  
Dovlat Solikhov ◽  
Zafari Kodirzoda
Keyword(s):  
Collision Frequency ◽  
Metal Structure ◽  
Critical Value ◽  
Evanescent Waves ◽  
Field Structure ◽  
Plasma Waveguide ◽  
Electron Collision ◽  
Plasma Reactors ◽  
Field Frequency ◽  
Electron Collision Frequency

The dispersion characteristics of surface and evanescent waves in metal-dielectric-plasma-dielectric-metal structure in the presence of collisions are investigated analytically and numer ically. In the absence of absorption, when the electron density passes through the doubled critical value, a rearrangement of the eigenwave structure, associated with the appearance of surface waves, occurs. A rearrangement also occurs in an absorbing plasma, but the numbers of reconnecting modes depend on the size of the structure and the ratio of the electron collision frequency to the field frequency. Correct consideration of this process is necessary for the analytical analysis of the field structure in plasma reactors, the design of plasma antennas, and the solution of other problems of plasma electrodynamics.

Effects of temperature and electron collision frequency on the elastic electron–ion collisions in a collisional plasma

2013 ◽  
Vol 79 (5) ◽  
pp. 553-558 ◽  
Author(s):  
YOUNG-DAE JUNG ◽  
WOO-PYO HONG
Keyword(s):  
Phase Shift ◽  
Temperature Effect ◽  
Cross Section ◽  
Collision Frequency ◽  
Electron Collision ◽  
Elastic Electron ◽  
Dynamic Temperature ◽  
Electron Collision Frequency ◽  
Dynamic Screening ◽  
Ion Collision

AbstractThe effects of dynamic temperature and electron–electron collisions on the elastic electron–ion collision are investigated in a collisional plasma. The second-order eikonal analysis and the velocity-dependent screening length are employed to derive the eikonal phase shift and eikonal cross section as functions of collision energy, electron collision frequency, Debye length, impact parameter, and thermal energy. It is interesting to find out that the electron–electron collision effect would be vanished; however, the dynamic temperature effect is included in the first-order approximation. We have found that the dynamic temperature effect strongly enhances the eikonal phase shift as well as the eikonal cross section for electron–ion collision since the dynamic screening increases the effective shielding distance. In addition, the detailed characteristic behavior of the dynamic screening function is also discussed.

Electron collision frequency in plasmas

1982 ◽  
Vol 25 (3) ◽  
pp. 1623-1631 ◽  
Author(s):  
D. B. Boercker ◽  
F. J. Rogers ◽  
H. E. DeWitt
Keyword(s):  
Collision Frequency ◽  
Electron Collision ◽  
Electron Collision Frequency

scholarly journals Decay of the electron density and the electron collision frequency between successive discharges of a pulsed plasma jet in N2

2019 ◽  
Vol 28 (3) ◽  
pp. 035020 ◽  
Author(s):  
Marc van der Schans ◽  
Bart Platier ◽  
Peter Koelman ◽  
Ferdi van de Wetering ◽  
Jan van Dijk ◽  
...  
Keyword(s):  
Electron Density ◽  
Collision Frequency ◽  
Plasma Jet ◽  
Electron Collision ◽  
Pulsed Plasma ◽  
Electron Collision Frequency

scholarly journals Usage of regularization techniques for effective electron collision frequency determination from oblique ionospheric sounding

1996 ◽  
Vol 14 (8) ◽  
pp. 811-815 ◽  
Author(s):  
P. F. Denisenko ◽  
N. V. Nastasyina ◽  
V. I. Vodolazkin
Keyword(s):  
Measurement Errors ◽  
Computer Modelling ◽  
Collision Frequency ◽  
Electron Collision ◽  
Radio Waves ◽  
Absorption Data ◽  
Effective Electron ◽  
F Region ◽  
Electron Collision Frequency ◽  
Regularization Techniques

Abstract. Computer modelling is used to investigate the possibility of determining ionospheric parameters from slightly oblique ionospheric soundings, using absorption data for decametric radio waves of different polarization. It is shown that with mean square measurement errors of 0.5 dB, and using regularization algorithms to solve the inverse problems, electron collision frequency profiles can be obtained for the night F-region with errors of less than 30%. Both temperatures of electrons and neutrals are also determined to within 10%.

Sign in / Sign up

Export Citation Format

Share Document