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A condition for simultaneous propagation of coaxial Gaussian electromagnetic beams in a plasma, without convergence or divergence

Published online by Cambridge University Press:  01 June 2008

MAHENDRA SINGH SODHA ,
ASHUTOSH SHARMA  and
SUJEET KUMAR AGARWAL
MAHENDRA SINGH SODHA
Affiliation:
Disha Academy of Research and Education, Disha Crown, Katchna Road, Shankar Nagar, Raipur – 492007, India (msodha@rediffmail.com)
ASHUTOSH SHARMA
Affiliation:
Ramanna Fellowship Programme, Department of Education Building, Lucknow University, Lucknow – 226 007, India
SUJEET KUMAR AGARWAL
Affiliation:
Ramanna Fellowship Programme, Department of Education Building, Lucknow University, Lucknow – 226 007, India
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Abstract

For coaxial Gaussian electromagnetic beams of equal width, a relation between the weighted sum of axial irradiances and the width of the beams, which corresponds to the propagation in a plasma, without convergence or divergence has been obtained in the paraxial approximation. The collisional (with and without thermal conduction), ponderomotive and relativistic nonlinearities have been separately considered in this investigation. The investigation has relevance to the study and application of multi-wave interaction phenomena such as the growth of combination frequencies, plasma beat wave acceleration and enhanced penetration in an overdense plasma.

Type
Papers
Information
Journal of Plasma Physics , Volume 74 , Issue 3 , June 2008 , pp. 293 - 299
Copyright
Copyright © Cambridge University Press 2008

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