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@unpublished{kuznetsov:rupac2021-tupsb18,
author = {S.V. Kuznetsov},
title = {{Generation of Accelerated Electron Beams During Interaction of Laser Pulse With Plasma}},
% booktitle = {RuPAC'21},
eventtitle = {Russ. Part. Accel. Conf. (RuPAC'21)},
eventdate = {2021-09-27/2021-10-01},
language = {english},
intype = {presented at},
series = {Russian Particle Accelerator Conference},
number = {27},
venue = {Alushta, Crimea},
note = {presented at RuPAC'21 in Alushta, Crimea, unpublished},
abstract = {{An important problem in the practical implementation of a laser plasma accelerator providing monoenergetic acceleration of electron bunches is the generation of short electron bunches for acceleration. An interesting phenomenon in the generation of attosecond electron bunches was discovered in the numerical simulation of the propagation of a high-power laser pulse in an inhomogeneous plasma. It was supposed that the laser pulse is incident normally on a diffuse plasma boundary comprising a transition layer in which the plasma density varies with plateauing out. It turned out that, when the laser pulse amplitude exceeds a certain threshold value in the neighborhood of the point at which the plasma density reaches the plateau, a quasi-onedimensional process of generation of accelerated electron bunches develops. For the case of a sharp plasma boundary, a theoretical analysis of this phenomenon in one dimensional geometry is proposed in on the basis of a simple physical model in which plasma electrons are considered as plasma oscillators whose one-dimensional motion is excited by a laser pulse. In this report a generalization of the theory for the case when the plasma boundary has a linear transition layer is presented. The good agreement between the analytical results and the numerical simulation confirms the adequacy of the physical model used for the analysis of the phenomenon of electron bunch generation in the presence of a transition layer in the plasma.}},
}