We present R-Matrix with time dependence (RMT) calculations for the photoionization of helium irradiated by an EUV laser pulse and an overlapping IR pulse with an emphasis on the anisotropy parameters of the sidebands generated by the dressing laser field. We investigate how these parameters depend on the amount of atomic structure included in the theoretical model for two-photon ionization. To verify the accuracy of the RMT approach, our theoretical results are compared with experiment.
|Number of pages||9|
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Early online date||07 Nov 2014|
|Publication status||Published - 28 Nov 2014|