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13 results on '"Karimov, A.R."'

4. Flow oscillations in radial expansion of an inhomogeneous plasma layer

Author

Karimov, A.R., Yu, M.Y., Stenflo, Lennart, Karimov, A.R., Yu, M.Y., and Stenflo, Lennart

Abstract

The cylindrically cylindrically symmetric radial evolution of an inhomogeneous plasma layer expanding into vacuum is investigated nonperturbatively by first determining the spatial structure of the plasma flow structure. The evolution is then governed by a set of ordinary differential equations. The effect of the plasma inhomogeneity on the nonlinear coupling among the electron and ion flow components and oscillations is investigated.

Published
2011
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11. Transverse distribution of density in charged-particle beams at later times.

Author

Karimov, A.R.

Subjects
*PARTICLE beams, *LAGRANGIAN points
Abstract

Examines the structural dynamics of a cold, non-neutralized charged-particle beam within limited spaces with reference to Lagrangian coordinates. Formation of density distribution in a transverse direction that is perpendicular to the beam's propagation directions; Conditions leading to the formation of various inhomogeneous structures in beams.

Published
1997
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12. Stimulated scattering of electromagnetic waves by a relativistic electron beam in a three-dimensional geometry

Author

Karimov, A.R., Poponin, V.P., Rukhadze, A.A., and Shcheglov, V.A.

Abstract

The properties of stimulated coherent scattering of an electromagnetic wave by a relativistic electron beam were studied in the framework of a three-wave approximation for a noncollinear geometry, when the incident and the scattered waves can propagate at arbitrary angles relative to the electron beam direction. The dispersion equation was obtained, making it possible to investigate the modes of collective (Raman) and single-particle (Compton) scattering from a unified viewpoint and to include the effect of an external longitudinal magnetic field on the electron motion in the field of a combination wave. Formulas were obtained for the amplitude increments of the scattered and the combination waves for those scattering modes, which can be used to make estimates when selecting the optimal scheme of a free-electron laser with a noncollinear scattering geometry.

Published
1999

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