Ring formation in self-focusing of electromagnetic beams in plasmas

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2774820· OSTI ID:21062034

Faisal, M; Mishra, S K; Verma, M P; Sodha, M S ^[1]

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1. 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

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM PROFILES
BEAM-PLASMA SYSTEMS
BEAMS
ELECTROMAGNETIC RADIATION
FOCUSING
NONLINEAR PROBLEMS
PLASMA
PLASMA RINGS
RADIANT FLUX DENSITY
SPATIAL DISTRIBUTION