Unexpected impact of radiation friction: enhancing production of longitudinal plasma waves

We study the penetration of ultra-intense (intensity I ≃ 10 23–24  W/cm 2 ) circularly polarized laser pulses into a thick subcritical plasma layer with accounting for radiation friction. We show that radiation pressure is enhanced due to radiation friction in the direction transverse to the laser p...

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Bibliographic Details
Published inScientific reports Vol. 8; no. 1; pp. 6478 - 8
Main Authors Gelfer, Evgeny, Elkina, Nina, Fedotov, Alexander
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 24.04.2018
Nature Publishing Group
Subjects
639/766/1960/1135
639/766/1960/1137
Friction
Humanities and Social Sciences
Lasers
multidisciplinary
Pressure
Science
Science (multidisciplinary)
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Summary:We study the penetration of ultra-intense (intensity I ≃ 10 23–24  W/cm 2 ) circularly polarized laser pulses into a thick subcritical plasma layer with accounting for radiation friction. We show that radiation pressure is enhanced due to radiation friction in the direction transverse to the laser pulse propagation, and that for stronger and longer laser pulses this mechanism dominates over the ordinary ponderomotive pressure, thus resulting in a substantionaly stronger charge separation than anticipated previously. We give estimates of the effect and compare them with the results of one and two dimensional particle-in-cell simulations. This effect can be important for laser-based acceleration schemes.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-24930-x