  Intense x-ray free-electron lasers (XFELs) offer unique opportunities to
control inner-shell electrons on ultrafast timescales. This study presents a
theoretical framework for modeling resonant x-ray scattering under intense
ultrafast pulses, focusing on the coherent dynamics of Rabi oscillations. We
employ a time-dependent Schr\"odinger equation approach to investigate the
effects of high-intensity pulses on the single atom response which includes
resonant fluorescence and elastic scattering channels, and competing decay
processes. Our findings highlight the sensitivity of scattering responses to
pulse parameters and initial states, with interference effects playing a
significant role.
