R. Müller,
D. Seipt,
S. Fritzsche,
and A. Surzhykov
Effect of bound-state dressing in laser-assisted radiative recombination
Phys. Rev. A, 92 :053426 (November 2015)
Effect of bound-state dressing in laser-assisted radiative recombination
Phys. Rev. A, 92 :053426 (November 2015)
Abstract:
We present a theoretical study on the recombination of a free electron into the ground state of a hydrogenlike ion in the presence of an external laser field. Emphasis is placed on the effects caused by the laser dressing of the residual ionic bound state. To investigate how this dressing affects the total and angle-differential cross section of laser-assisted radiative recombination (LARR) we apply first-order perturbation theory and the separable Coulomb-Volkov continuum ansatz. Using this approach, detailed calculations are performed for low-Z hydrogenlike ions and laser intensities in the range from I_L=10^12 to 10^13W/cm2. It is seen that the total cross section as a function of the laser intensity is remarkably affected by the bound-state dressing. Moreover, the laser dressing becomes manifest as asymmetries in the angular distribution and the (energy) spectrum of the emitted recombination photons.