Heidelberg 2015 – scientific programme

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A: Fachverband Atomphysik

A 32: Interaction with strong or short laser pulses III

A 32.6: Talk

Thursday, March 26, 2015, 16:00–16:15, C/HSW

Robust signatures of quantum radiation reaction in focused ultrashort laser pulses — •jian-xing li, karen z. hatsagortsyan, and christoph h. keitel — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69029 Heidelberg, Germany

Radiation reaction effects in the interaction of an electron bunch with a superstrong focused ultrashort laser pulse are investigated in the quantum radiation dominated regime. In dependence of the laser pulse duration we find signatures of quantum radiation reaction in the radiation spectra, which are characteristic for the focused laser beam and visible in the qualitative behaviour of both the angular spread and the spectral bandwidth of the radiation spectra. The signatures are robust with respect to the variation of the electron and laser beam parameters in a large range. They fully differ qualitatively from those in the classical radiation reaction regime and are measurable with presently available laser technology [1].

[1] Jian-Xing Li, Karen Z. Hatsagortsyan, Christoph H. Keitel. Phys. Rev. Lett., 113, 044801 (2014).