Relativistic electron-ion recombination in the presence of an intense laser field

Abstract

Radiative recombination of a relativistic electron with a highly charged ion in the presence of an intense laser field is considered. Various relativistic effects, caused by the high energy of the incoming electron and its strong coupling to the intense laser field, are found to clearly manifest themselves in the spectra of the emitted γ-photons.

Caustic structures in x-ray Compton scattering off electrons driven by a short intense laser pulse

“…The reason for this behaviour is that g 1 f . This 'wing'-like shape of the plateau is a generic feature of laser-assisted processes when the laser pulse has a constant amplitude and was also seen in laser-assisted electron-ion recombination [20]. Hence, in order to describe the peaks in the frequency spectrum correctly it is essential to exactly take into account the shape of the short laser pulse.…”

“…High-intensity lasers can also be employed in laser-assisted scattering processes [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32], where the presence of the strong low-frequency laser field modulates a hard QED scattering process. This could be, for instance, Compton scattering where a hard x-ray (or γ-ray) photon is scattered off a (quasi-)free electron with a frequency change that depends on the scattering angle [33].…”

High-energy ionization for intense laser pulse diagnostics

“…For this reason, various proposals for characterization of short and ultra-intense laser pulses have been put forward. It is possible, for instance, to use the properties of secondary radiation emitted during the radiative electron recombination [6][7][8],…”