Instruments 

 
Most experiments of the AXS group are performed by means of high-resolution x-ray spectroscopy, using two crystal spectrometers that were designed and constructed within the group. The first instrument is a Laue DuMond-type bent crystal spectrometer which can be used for the measurements of x-rays with energies above 11 keV. For lower x-ray energies, a Bragg von Hamos-type curved crystal spectrometer is employed.
 
The Dumond spectrometer is mainly used for in-house x-ray metrology projects, whereas the von Hamos instrument, which is more compact and thus transportable, is employed for both in-house experiments and projects carried out at external synchrotron radiation and heavy-ion facilities.
 
For in-house experiments, the sample x-ray fluorescence is produced by irradiating the targets with the Bremsstrahlung of x-ray tubes or with electron beams. Two 3 kW x-ray generators (100 kV and 60 kV) with Coolidge-type Au, Cr and Sc x-ray tubes and two 20 kV electron-guns with maximum electron-currents of 100 microamps and 10 milliamps, respectively, are available.

 

 

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