| For several decades, variations on the standard “time-independent” Floquet method, [1], have been used to accurately and non-perturbatively describe a host of atomic ionization effects, [2]. However, as pulses become shorter, (∼tens or hundreds of fs), the infinite-pulse duration assumption of traditional Floquet theory breaks down, [3]. For pulses, we present a time-dependent generalization of the method and implement it within an R-Matrix-Floquet framework, [4,5].; Total ionization rates, as well as partial rates, angular distributions, and level shifts are presented for a number of intensities and pulse lengths.; Comparisons are made to the direct numerical integration of the time-dependent Schrödinger equation, (TDSE), as well as results predicted by other Floquet-type analyses. |
