Abstract
The self-consistent dynamics of an electron–positron plasma, which is formed during the generation of quantum-electrodynamic cascades, in a superstrong field of counterpropagating linearly polarized waves is examined. It is shown that the formation of thin (on a wavelength scale) current sheets which generate quasistatic magnetic fields comparable to the corresponding fields of incident waves plays an important role in the dynamics of a cascade for fields above a certain threshold. The fraction of the laser energy transformed into the energy of quasistatic magnetic fields can exceed 20%.
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Original Russian Text © A.A. Muraviev, S.I. Bastrakov, A.V. Bashinov, A.A. Gonoskov, E.S. Efimenko, A.V. Kim, I.B. Meyerov, A.M. Sergeev, 2015, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheckoi Fiziki, 2015, Vol. 102, No. 3, pp. 173–178.
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Muraviev, A.A., Bastrakov, S.I., Bashinov, A.V. et al. Generation of current sheets and giant quasistatic magnetic fields at the ionization of vacuum in extremely strong light fields. Jetp Lett. 102, 148–153 (2015). https://doi.org/10.1134/S0021364015150060
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DOI: https://doi.org/10.1134/S0021364015150060