“…A femtosecond optical laser system is available for optical-X-ray pump-probe experiments. Typical experiments at the AMO instrument range from high-intensity X-ray spectroscopy (Young et al, 2010;Berrah et al, 2011;Doumy et al, 2011;Rudek et al, 2012) to timeresolved and pump-probe experiments (Cryan et al, 2010;Meyer et al, 2012;Schorb et al, 2012a;McFarland et al, 2014) as well as coherent diffractive imaging of biological objects (Seibert et al, 2011;Kassemeyer et al, 2012), aerosols (Loh et al, 2012), clusters (Gorkhover et al, 2012) and gas-phase laser-aligned molecules (Kü pper et al, 2014).…”