  The single ionization of noble gas atoms by the combined action of XUV
attopulses and an infrared laser field is theoretically investigated by means
of a non-perturbative model that under certain approximations gives closed-form
expressions for the angular distributions of photoelectrons. Interestingly, our
model allow us to interpret the angular distributions as two-center
interferences where the separation between the centers is governed by the
infrared laser field. Angular distributions are compared to the available
experimental data showing a good agreement. Finally, we deduce the conditions
to obtain zeros in the angular distributions coming from destructive two-center
interferences.
