title: Time- and spatial-resolved XAFS spectroscopy in a single shot: new analytical possibilities for in situ material characterization.
abstract: A new concept that comprises both time- and lateral-resolved X-ray absorption fine-structure information simultaneously in a single shot is presented. This uncomplicated set-up was tested at the BAMline at BESSY-II (Berlin, Germany). The primary broadband beam was generated by a double multilayer monochromator. The transmitted beam through the sample is diffracted by a convexly bent Si (111) crystal, producing a divergent beam. This, in turn, is collected by either an energy-sensitive area detector, the so-called color X-ray camera, or by an area-sensitive detector based on a CCD camera, in θ-2θ geometry. The first tests were performed with thin metal foils and some iron oxide mixtures. A time resolution of lower than 1 s together with a spatial resolution in one dimension of at least 50 µm is achieved.
authors.affiliation: Federal Institute for Materials Research and Testing (BAM), Division 1.3 Structure Analysis, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany.
authors.forename: Ana Guilherme
authors.initials: AG
authors.lastname: Buzanich
authors.affiliation: Federal Institute for Materials Research and Testing (BAM), Division 1.3 Structure Analysis, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Radtke
authors.affiliation: Federal Institute for Materials Research and Testing (BAM), Division 1.3 Structure Analysis, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany.
authors.forename: Uwe
authors.initials: U
authors.lastname: Reinholz
authors.affiliation: Federal Institute for Materials Research and Testing (BAM), Division 1.3 Structure Analysis, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany.
authors.forename: Heinrich
authors.initials: H
authors.lastname: Riesemeier
authors.affiliation: Federal Institute for Materials Research and Testing (BAM), Division 1.3 Structure Analysis, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany.
authors.forename: Franziska
authors.initials: F
authors.lastname: Emmerling
keywords: divergent XAFS; single-shot XAFS; spatial resolution; time resolution