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 65 ° – 89 ° . 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.
Source: Journal of Synchrotron Radiation - Category: Physics Authors: Tags: X-ray emission spectrometer Johann geometry XANES HERFD XES RIXS actinides beamlines Source Type: research