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Formation of a waveguide having the ultimately small cross-section due to self-consistent propagation of a highly intensive laser beam (1018 W/cm2) with duration of 100 ps in an overdense plasma

Published online by Cambridge University Press:  01 July 1999

G.G. KOCHEMASOV ,
L.S. MKHITARYAN  and
B.A. VOINOV
G.G. KOCHEMASOV
Affiliation:
Russian Federal Nuclear Center–All-Russian Research Scientific Institute of Experimental Physics, 607190, pr. Mira 37, Sarov, Nizhni Novgorod Region, Russia
L.S. MKHITARYAN
Affiliation:
Russian Federal Nuclear Center–All-Russian Research Scientific Institute of Experimental Physics, 607190, pr. Mira 37, Sarov, Nizhni Novgorod Region, Russia
B.A. VOINOV
Affiliation:
Russian Federal Nuclear Center–All-Russian Research Scientific Institute of Experimental Physics, 607190, pr. Mira 37, Sarov, Nizhni Novgorod Region, Russia
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Abstract

Here we study the problem of a focused laser beam propagation in plasma with the initial density, which is much higher than the critical one. The Helmholtz equations, together with the equations of single fluid hydrodynamics, with the relativistic ponderomotive force were solved. It was shown that the stable waveguide with the cross-section of wavelength size was formed when plasma was affected by the laser radiation with the intensity exceeding the critical one while the laser radiation pulse was as long as (10–100) ps.

Type
Research Article
Information
Laser and Particle Beams , Volume 17 , Issue 3 , July 1999 , pp. 391 - 394
Copyright
1999 Cambridge University Press

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