A Johann type X ray emission spectrometer at the Rossendorf beamline.
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 65deg 89deg. The instrument has been tested at high and intermediate incident energies, i.e. at the Zr K edge and at the Au L3 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.
Journal of synchrotron radiation