dimer that will be considered below are shown in Fig. , demonstrating the appearance of artifacts in nitrogen Kedge spectra for t max = 200 a.u., which are not present for t max = 600 a.u.. For this reason, the TDKS simulations presented below use at least 600 a.u. of simulation time, in order to clearly elucidate all spectral features of this method. In Section 4 C 1, we will consider whether meaningful near-edge features can be extracted from shorter simulations.