Model for ultraintense laser-plasma interaction at normal incidence.
An analytical study of the relativistic interaction of a linearly polarized laser field of ω frequency with highly overdense plasma is presented. In agreement with one-dimensional particle-in-cell simulations, the model self-consistently explains the transition between the sheath inverse bremsstrahlung absorption regime and the J×B heating (responsible for the 2ω electron bunches), as well as the high harmonic radiations and the mean electron energy.
ETSI Aeronáuticos, Universidad Politécnica de Madrid, Madrid 28040, Spain.
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Sanz
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Debayle
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Mima