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LMS Olomouc

  

Transmission Mössbauer spectroscopy (TMS)

  • room temperature (RT) measurement, velocity range up to ±24 mm/s
  • low temperature measurement down to 3.2 K (under LHT)

- Cryostation (Montana Instruments) closed-cycle cryogen-free system with mounted Mössbauer spectrometer, standart velocity range ±12 mm/s 

  • high temperature 57Fe (119Sn) Mössbauer spectroscopy up to 1100°C in air, specified atmosphere or vacuum

- MS furnace MBF-1100 by WissEl
- furnace for heat treatment of samples operating in temperature range from 300 to 1400 K
- both furnaces can be adjusted for in-situ nuclear forward scattering (NFS) experiments as well 

Mössbauer spectroscopy in a γ-rays backscattering geometry 

  • allows registration of γ-rays Mössbauer spectra from surface layer to depth up to ~20 μm of compact (not necessarily powdered or thin) and relatively large samples
  • austinometer for analysis of surfaces of larger compact samples for metallurgy industry (fast and precise determination of residual austenite and investigation of corrosion processes)

57Co emission Mössbauer spectroscopy (EMS)

  • 10-100x higher sensitivity than transmission Mössbauer spectroscopy
  • capable to follow a migration of implanted radioactive atoms in the material (e.g. during diffusion, chemical reactions etc.)
  • two separate spectrometers for powdered and compact samples
  • controlled electrolytic deposition of 57Co films on metallic surfaces by potentiostat Origa2000

Time-differential 57Fe Mössbauer spectroscopy (TDMS)

  • operated in transmission or emission configuration
  • equipped with a specially designed detector allowing detection of 122 keV photons in a nearly 4° solid angle
  • operated in the coincidence regime - time resolution of the 122 keV and 14.4 keV photons delay adjustable in the range of 1-20 ns, decrease in linewidths by factor of 1.5 beneficial in case of complex spectra
  • technique provides possibility to investigate chemical aftereffects (e.g. processes which take place after the transmutation of Co to Fe atom)

Nuclear resonant scattering (NRS) techniques employing synchrotron radiation

  • expertize in evaluation and interpretation of NRS spectra achieved in the course of the collaborations with DESY Hamburg (Germany) and ESRF Grenoble (France)
  • techniques of nuclear forward scattering (NFS), nuclear Bragg scattering (NBS) and nuclear inelastic scattering (NIS)