Open AccessX-ray absorption spectroscopy using a self-seeded soft X-ray free-electron laser
Author(s) -
Thomas Kröll,
Jan Kern,
Markus Kubin,
Daniel Ratner,
Sheraz Gul,
Franklin D. Fuller,
Heike Löchel,
J. Krzywiński,
Alberto Lutman,
Yuantao Ding,
Georgi L. Dakovski,
Stefan Moeller,
Joshua J. Turner,
Roberto Alonso-Mori,
Dennis Nordlund,
Jens Rehanek,
Christian Weniger,
Alexander A. Firsov,
Maria Brzhezinskaya,
Ruchira Chatterjee,
Benedikt LassalleKaiser,
Raymond G. Sierra,
Hartawan Laksmono,
Ethan A. Hill,
A. S. Borovik,
Alexei Erko,
Alexander Föhlisch,
R. Mitzner,
Vittal K. Yachandra,
Junko Yano,
Philippe Wernet,
Uwe Bergmann
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.022469
Subject(s) - undulator , optics , monochromator , spectroscopy , x ray spectroscopy , x ray absorption spectroscopy , laser , synchrotron radiation , absorption spectroscopy , materials science , femtosecond , absorption (acoustics) , physics , wavelength , quantum mechanics
X-ray free electron lasers (XFELs) enable unprecedented new ways to study the electronic structure and dynamics of transition metal systems. L-edge absorption spectroscopy is a powerful technique for such studies and the feasibility of this method at XFELs for solutions and solids has been demonstrated. However, the required x-ray bandwidth is an order of magnitude narrower than that of self-amplified spontaneous emission (SASE), and additional monochromatization is needed. Here we compare L-edge x-ray absorption spectroscopy (XAS) of a prototypical transition metal system based on monochromatizing the SASE radiation of the linac coherent light source (LCLS) with a new technique based on self-seeding of LCLS. We demonstrate how L-edge XAS can be performed using the self-seeding scheme without the need of an additional beam line monochromator. We show how the spectral shape and pulse energy depend on the undulator setup and how this affects the x-ray spectroscopy measurements.