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Q: Fachverband Quantenoptik und Photonik

Q 55: Poster III

Q 55.8: Poster

Donnerstag, 5. März 2009, 16:30–19:00, VMP 8 Foyer

Radiative effects in the motion of a laser driven classical electron and Compton scattering in ultra-short laser pulses — •Felix Mackenroth, Antonino Di Piazza, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany

The Landau-Lifshitz equation describes the classical motion of a charged particle in an external electromagnetic field by taking into account the effect on the particle motion of the field radiated by the charge itself (radiation reaction). We present here the exact analytical solution of this equation when the external field is a plane wave of arbitrary form and polarization [1]. We can determine in this way the physical parameter characterizing the so-called "radiation dominated regime" when the radiation reaction force is comparable with the Lorentz force. The above considerations are classical. We also study the quantum scattering of an electron by an ultra-short strong laser field (multiphoton Compton scattering) [2]. We point out the qualitative and quantitative differences with the usually considered case of an infinite monochromatic laser wave.
[1] A. Di Piazza, Lett. Math. Phys. 83, 305 (2008).
[2] F. Mackenroth, A. Di Piazza, and C. H. Keitel, in preparation.