Abstract
Results are presented from a theoretical investigation of the acceleration of test electrons by a Langmuir wave excited by a short laser pulse at half the electron plasma frequency. Such a pulse penetrates into the plasma over a distance equal to the skin depth and efficiently excites Langmuir waves in the resonant interaction at the second harmonic of the laser frequency. It is shown that the beam of electrons accelerated by these waves is modulated into a train of electron bunches, but because of the initial thermal spread of the accelerated electrons, the bunches widen and begin to overlap, with the result that, at large distances, the electron beam becomes unmodulated.
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Original Russian Text © V.A. Balakirev, I.V. Gavrilenko, V.I. Karas’, A.P. Tolstoluzhskiĭ, 2007, published in Fizika Plazmy, 2007, Vol. 33, No. 4, pp. 376–382.
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Balakirev, V.A., Gavrilenko, I.V., Karas’, V.I. et al. Electron acceleration by Langmuir waves excited by a laser pulse in a semi-infinite plasma. Plasma Phys. Rep. 33, 338–344 (2007). https://doi.org/10.1134/S1063780X07040095
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DOI: https://doi.org/10.1134/S1063780X07040095