Open AccessA Johann‐type X‐ray emission spectrometer at the Rossendorf beamline
Author(s) -
Kvashnina Kristina O.,
Scheinost Andreas C.
Publication year - 2016
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577516004483
Subject(s) - beamline , spectrometer , synchrotron radiation , optics , physics , synchrotron , x ray spectroscopy , emission spectrum , materials science , spectroscopy , spectral line , beam (structure) , quantum mechanics , astronomy
This paper gives a detailed description, including equations, of the Johann‐type X‐ray emission spectrometer which has been recently installed and tested at the Rossendorf beamline (ROBL) of the European Synchrotron Radiation Facility. The spectrometer consists of a single spherically bent crystal analyzer and an avalanche photodiode detector positioned on the vertical Rowland cycle of 1 m diameter. The hard X‐ray emission spectrometer (∼3.5–25 keV) operates at atmospheric pressure and covers the Bragg angles of 65°–89°. The instrument has been tested at high and intermediate incident energies, i.e. at the Zr K ‐edge and at the Au L 3 ‐edge, in the second experimental hutch of ROBL. The spectrometer is dedicated for studying actinides in materials and environmental samples by high‐energy‐resolution X‐ray absorption and X‐ray emission spectroscopies.