| At the ultrahigh optical laser intensities expected in the foreseen experiments (I > 1023 W/cm2), a solid-density thin plasma foil can be quickly accelerated up to relativistic energies by the radiation pressure of an impinging laser pulse [1,2]. The very high electron density of such relativistic foil allows to efficiently reflect a second, counter-propagating and intense laser pulse producing a short and extremely-intense laser pulse (I > 1024 W/cm2) via the Doppler effect. The extreme intensity and high frequency of the reflected pulse render it suitable for studying nonlinear quantum electrodynamics effects. In this contribution, the Doppler intensity increase of a laser pulse with a counter-propagating laser-boosted relativistic foil is studied with 1D particle-in-cell (PIC) simulations including the effect of the so called radiation reaction (RR) force [2]. [1] T. Esirkepov, M. Borghesi, S. V. Bulanov, G. Mourou, T. Tajima, Phys. Rev. Lett. 92, 175003 (2004). [2] M. Tamburini, F. Pegoraro, A. Di Piazza, C. H. Keitel and A. Macchi, New J. Phys. 12, 123005 (2010). |
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