title: Capturing molecular structural dynamics by 100 ps time-resolved X-ray absorption spectroscopy.
abstract: An experimental set-up for time-resolved X-ray absorption spectroscopy with 100 ps time resolution at beamline NW14A at the Photon Factory Advanced Ring is presented. The X-ray positional active feedback to crystals in a monochromator combined with a figure-of-merit scan of the laser beam position has been utilized as an essential tool to stabilize the spatial overlap of the X-ray and laser beams at the sample position. As a typical example, a time-resolved XAFS measurement of a photo-induced spin crossover reaction of the tris(1,10-phenanthrorine)iron(II) complex in water is presented.
authors.affiliation: Department of Materials Science, Tokyo Institute of Technology, 2-12-1-H61 Ohokayama, Meguro-ku, Tokyo 152-8551, Japan.
authors.forename: Tokushi
authors.initials: T
authors.lastname: Sato
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Nozawa
authors.forename: Kohei
authors.initials: K
authors.lastname: Ichiyanagi
authors.forename: Ayana
authors.initials: A
authors.lastname: Tomita
authors.forename: Matthieu
authors.initials: M
authors.lastname: Chollet
authors.forename: Hirohiko
authors.initials: H
authors.lastname: Ichikawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Fujii
authors.forename: Shin Ichi
authors.initials: SI
authors.lastname: Adachi
authors.forename: Shin Ya
authors.initials: SY
authors.lastname: Koshihara