17 February 2011 Radiation pressure and radiation reaction effects in laser-solid interaction
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Proceedings Volume 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies; 799421 (2011) https://doi.org/10.1117/12.881906
Event: International Conference on Coherent and Nonlinear Optics (ICONO 2010) and International Conference on Lasers, Applications and Technologies (LAT 2010), 2010, Kazan, Russian Federation
Abstract
The interaction of ultra-high intensity laser pulses with solid targets is studied theoretically and with Particle- In-Cell (PIC) simulations. The regime of Radiation Pressure Acceleration of ultrathin foil targets is investigated within an improved "Light Sail" or "accelerating mirror" model. The latter provides simple and useful scalings for the characteristics of accelerated ions. The underlying dynamics, unfolded by PIC simulations, is however more complex than the simple model may suggest. An important issue is the heating of electrons that, even if strongly reduced by the use of circulary polarized (CP) pulses, may lead to a significant broadening of the ion spectrum. Radiation Reaction (RR) effects in the ultra-relativistic regime of extreme intensities are included in the PIC simulations via the Landau-Lifshitz formula. Apparently, for linearly polarized pulses RR slightly reduces the ion energy but also contributes to cooling the electrons, while RR effects are rather weak for CP pulses.
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A. Macchi, A. Macchi, M. Tamburini, M. Tamburini, S. Veghini, S. Veghini, F. Pegoraro, F. Pegoraro, A. Di Piazza, A. Di Piazza, C. H. Keitel, C. H. Keitel, "Radiation pressure and radiation reaction effects in laser-solid interaction", Proc. SPIE 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies, 799421 (17 February 2011); doi: 10.1117/12.881906; https://doi.org/10.1117/12.881906
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