Abstract
The propagation and amplification of ultrashort terahertz pulses in a nonequilibrium photoionization plasma channel formed in xenon by a powerful femtosecond UV laser pulse is studied in In three-dimensional geometry. The study is based on the self-consistent numerical integration of the second-order wave equation in cylindrical geometry and the Boltzmann kinetic equation in the two-term eхpansion to describe the electron velocity distribution function in the spatially inhomogeneous nonequilibrium plasma of the channel.
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