Kiel 2011 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 4: Dichte Plasmen / Schwerionen- und Laserplasmen
P 4.3: Vortrag
Dienstag, 29. März 2011, 11:30–11:45, HS C
Radiation reaction effects on ion acceleration in laser-solid interaction — •Matteo Tamburini1, Francesco Pegoraro1, Antonino Di Piazza2, Christoph H. Keitel2, Tatyana V. Liseykina3, and Andrea Macchi1,4 — 1Dipartimento di Fisica, Università di Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy — 2Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany — 3Institute of Computer Technologies, SD-RAS, Novosibirsk, Russia and Institute of Physics, University of Rostock, Germany — 4Istituto Nazionale di Ottica, CNR, Pisa, Italy
At the extremely high optical laser intensities expected in the near future, electrons become ultrarelativistic within a fraction of the wave period experiencing superstrong accelerations and therefore emitting relatively large amounts of electromagnetic radiation. At such extreme laser intensities it may be then necessary to include radiation reaction (RR) effects to describe the laser-plasma interaction.
In this contribution [1], we present the results of our PIC simulations with RR effects included in the radiation pressure-dominated regime, both for linear and circular polarization. Our approach is based on the Landau-Lifshitz (LL) equation of motion for electrons. Our results show that the RR force leads to a significant electron cooling and an increased spatial bunching of both electrons and ions with a beneficial effect on the quality of the ion spectrum.
[1] M. Tamburini, F. Pegoraro, A. Di Piazza, C. H. Keitel and A. Macchi, New J. Phys. vol. 12, 123005 (2010); M. Tamburini et al., Nucl. Instr. and Meth. Phys. Res. A, in press.