HRXRS - High Resolution X-ray Spectrometer

Basic properties of our HRXRS spectrometer:

Cylindrically bent crystal in Johansson geometry, radius of Rowland circle = 500 mm
Angular range: 30° - 65°

crystal2d[A]energy range
TlAP(001) 25.9000.55 - 0.95 keV (1.1 - 1.9 keV)
Quartz(110) 8.50961.6 - 2.9 keV (3.2 - 5.8 keV)
Si(111) 6.2712.2 - 4.0 keV

Thermoelectricaly cooled CCD camera (ANDOR DX-438-BV)
Marconi 555-20, 770x1152 pixel size 22,5 x 22,5 mm2
controler CCI-010, 1 MHz reading frequency, 16bit AD conversion

Spectrometer is enclosed into 1,6 x 1,3 x 0,3 m3 stainless steel vacuum chamber (working pressure 10-6 mbar)

WDS spectrometer Rowland cirle HRXRS vacuum chamber

HRXRS spectrometer enables high energy resolution x-ray measurement of solid and gaseous targets with energy resolution E/E of appr. 2x10-4.

spectrum from HRXRS

Measured Kα line of S target (left) and Lα line of Xe exhibiting energy resolution of 0.4 eV and 0.7 eV, respectively.

HRXRS spectrometer opened HRXRS spectrometer installed on the beamline

HRXRS spectrometer installed at the ID26 beamline of the ESRF (left) and the XAFS beamline of the Elettra (right) synchrotron, respectively.

Some of the experiments with HRXRS:

Multiple ionization of low-Z atoms induced in collisions with MeV protons

  • M. Kavčič, Phys. Rev. A68, (2004), 022713.
  • M. Kavčič, K. Tokesi, Phys. Rev. A72, (2005), 062704.

Use of high-resolution X-ray spectrometer for the study of chemical effects in X-ray spectra and chemical state analysis

  • M. Kavčič, A.G. Karydas, Ch. Zarkadas, Nucl. Instr. and Meth. B222, (2004), 611.
  • M. Kavčič, A.G. Karydas, Ch. Zarkadas, X-Ray Spectrom. 34, (2005), 310.

Resonant X-ray emission studies employing synchrotron radiation

  • M. Žitnik et al., Phys. Rev. A76, 032506 (2007).

HRXRS excitation spectrum

RIXS (Resonant Inelastic X-ray Scattering) planes of Mo Lα1,2 (L3 - M4,5 transition) and Lβ2,15 (L3 - N4,5 transition) lines from the Na2MoO4 sample measured with our HRXRS spectrometer at the ID26 beamline of the ESRF synchrotron.

Contact person:

Dr. Matjaž Kavčič

Last updated: 01/22/2014