Ring formation in self-focusing of electromagnetic beams in plasmas
- Ramanna Fellowship and D.S.T. Project, Department of Education Building, Lucknow University, Lucknow 226 007 (India)
This article presents a paraxial theory of ring formation as an initially Gaussian beam propagates in a nonlinear plasma, characterized by significant collisional or ponderomotive nonlinearity. Regions in the axial irradiance-(beam width){sup -2} space, for which the ring formation occurs and the paraxial theory is valid, have been characterized; for typical points in these regions the dependence of the beam width parameter and the radial distribution of irradiance on the distance has been specifically investigated and discussed.
- OSTI ID:
- 21062034
- Journal Information:
- Physics of Plasmas, Vol. 14, Issue 10; Other Information: DOI: 10.1063/1.2774820; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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