Abstract
The process of trapping and acceleration of nonmonoenergetic electron bunches by a wake wave excited by a laser pulse in a plasma channel is investigated. The electrons are injected into the vicinity of the maximum of the wakefield potential with a velocity lower than the wave phase velocity. The study is aimed at utilizing specific features of a wakefield with substantially overlapped focusing and accelerating phases for achieving monoenergetic electron acceleration. Conditions are found under which electrons in a finite-length nonmonoenergetic bunch are accelerated to high energies, while the energy spread between them is minimal. The effect of energy grouping of electrons makes it possible to obtain compact high-energy electron bunches with a small energy spread during laser plasma acceleration.
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Original Russian Text © S.V. Kuznetsov, 2012, published in Fizika Plazmy, 2012, Vol. 38, No. 2, pp. 134–144.
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Kuznetsov, S.V. Acceleration of electron bunches injected into a wake wave. Plasma Phys. Rep. 38, 116–125 (2012). https://doi.org/10.1134/S1063780X12010084
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DOI: https://doi.org/10.1134/S1063780X12010084