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Dispersion of dipolar electromagnetic waves in a radially inhomogeneous axially magnetized plasma column

Published online by Cambridge University Press:  01 December 1997

I. GHANASHEV ,
I. ARESTOVA ,
E. TATAROVA ,
I. ZHELYAZKOV  and
Sv. STOYKOV
I. GHANASHEV
Affiliation:
Department of Electrical Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-01, Japan
I. ARESTOVA
Affiliation:
Faculty of Physics, Sofia University, BG-1164 Sofia, Bulgaria
E. TATAROVA
Affiliation:
Faculty of Physics, Sofia University, BG-1164 Sofia, Bulgaria
I. ZHELYAZKOV
Affiliation:
Faculty of Physics, Sofia University, BG-1164 Sofia, Bulgaria
Sv. STOYKOV
Affiliation:
Faculty of Physics, Sofia University, BG-1164 Sofia, Bulgaria
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Abstract

The wavelengths and attenuation coefficients of dipolar left and right-hand circularly polarized waves in a radially inhomogeneous axially magnetized plasma column are computed by means of step approximation of the radial plasma density profile. A comparison with theoretical results assuming radial plasma homogeneity shows that the radial plasma inhomogeneity is significant for wave propagation. In particular, it facilitates the occurrence of backward waves and increases by up to one order of magnitude the wave attenuation coefficient compared with a homogeneous plasma column having the same average plasma density.

Type
Research Article
Information
Journal of Plasma Physics , Volume 58 , Issue 4 , December 1997 , pp. 633 - 646
Copyright
1997 Cambridge University Press

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