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The advection by a flow of ponderomotively driven density fluctuations may lead to the deflection of a laser pulse. This effect, known as beam bending, may modify the irradiation geometry… Click to show full abstract
The advection by a flow of ponderomotively driven density fluctuations may lead to the deflection of a laser pulse. This effect, known as beam bending, may modify the irradiation geometry and energy deposition in high energy laser plasma experiments. A kinetic modeling of beam-bending of a Gaussian laser pulse is proposed and validated by means of “particle-in-cell” simulations over a vast parametric domain, demonstrating the importance of accounting for kinetic damping of driven ion-acoustic waves. The transient regime is also addressed and compared to kinetic simulations.
Journal Title: Physics of Plasmas
Year Published: 2020
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