NDLI: Optical injection dynamics in two laser wakefield acceleration configurations

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Optical injection dynamics in two laser wakefield acceleration configurations

Content Provider	Scilit
Author	Horný, Vojtěch Mašlárová, Dominika Petržílka, Václav Klimo, Ondřej Kozlová, Michaela Krůs, Miroslav
Copyright Year	2018
Description	Journal: Plasma Physics and Controlled Fusion The injection and acceleration dynamics of electron bunches generated by two different optical injection mechanisms, the injection by an orthogonally crossing pulse with perpendicular polarization and injection by a copropagating preceding pulse, are studied by means of 2D numerical particle-in-cell simulations. The effect of the ion cavity (bubble) shape variations induced by injection pulses on the electron bunch formation and observable parameters is explored for early injection and acceleration phases. Even if both schemes have three different injection regions, from which three independent electron sub-bunches emerge, the final merged electron bunch does not exhibit a significant substructure in studied parameters as transverse and longitudinal emittance. The 2D particle-in-cell simulations also reveal that the final electron bunch parameters are mainly affected by the spatial charge distribution of individual sub-bunches. Further, the model of the electric and magnetic fields within the slowly evolving ellipsoidal bubble is derived. The electron trajectories in acceleration later stages are analyzed by employing this model for the dynamic changes in the bubble size observed in particle-in-cell simulations.
Related Links	http://iopscience.iop.org/article/10.1088/1361-6587/aabd07/pdf
ISSN	07413335
e-ISSN	13616587
DOI	10.1088/1361-6587/aabd07
Journal	Plasma Physics and Controlled Fusion
Issue Number	6
Volume Number	60
Language	English
Publisher	IOP Publishing
Publisher Date	2018-04-10
Access Restriction	Open
Subject Keyword	Journal: Plasma Physics and Controlled Fusion
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Nuclear Energy and Engineering

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