Abstract
The process of electron trapping by a wake wave excited by a laser pulse in a plasma channel in the case where the electron bunches are injected into the vicinity of the maximum of the wakefield potential at a velocity lower than the wave phase velocity is considered. The mechanism for the formation of a compact electron bunch in the trapping region when only the electrons of the injected bunch that are trapped in the focusing phase mainly undergo the subsequent acceleration in the wakefield is analyzed. The influence of the spatial dimensions of the injected bunch and its energy spread on the length of the trapped electron bunch and the fraction of trapped electrons is studied analytically and numerically. For electron bunches with different ratios of their spatial dimensions to the characteristic dimensions of the wake wave, the influence of the injection energy on the parameters of the high-energy electron bunch trapped and accelerated in the wake-field is studied.
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Original Russian Text © S.V. Kuznetsov, 2014, published in Fizika Plazmy, 2014, Vol. 40, No. 8, pp. 707–720.
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Kuznetsov, S.V. Trapping of electrons and acceleration of the electron bunch in a wake wave. Plasma Phys. Rep. 40, 611–622 (2014). https://doi.org/10.1134/S1063780X14080054
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DOI: https://doi.org/10.1134/S1063780X14080054