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Mössbauer spectrometry laboratory

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Contact details

Steenvoorden, M.P.
Applied Sciences (TNW), RRR-Fame
Mekelweg 15, 2629 JB Delft
Tel : +31 (0)15 27 83189
E-mail : M.P.Steenvoorden@tudelft.nl
Website : Open website

General Information

Instrument:

Mössbauer spectrometry laboratory

Location:

Room 0.01.050, Reactor Institute Delft, Mekelweg 15, Delft (building #50)

Key words:

gamma, nuclear, cobalt, tungsten, mossbauer spectrometer, iron, gold, catalysis, resonance

Main application:

Characterization of magnetic and electric properties of Fe containing materials, as well as Co, W and Au. The technique is isotop specific. The Mössbauer parameters are extremely sensitive to the local surroundings of the probe atom (hyperfine interactions) and all different local surroundings of the probe atom give separate sub-spectra in the Mössbauer spectrum. The gamma rays used in this nuclear resonance technique have a high penetrating power and it is therefor a suitable technique to perform investigations under in-situ conditions (f.i. catalysis).

Instrument specification

Available equipment in the Mössbauer spectrometry lab:

  • Six Mössbauer absorption spectrometers which can be used in 57Fe-Mössbauer spectrometry.

  • Two Mössbauer emission spectrometers to investigate 57Co containing materials. 

  • One Mössbauer absorption spectrometer in which the source as well as the absorber can be cooled down to T = 4.2 K, for 197Au and 182W Mössbauer spectrometry. 

  • One Mössbauer absorption spectrometer in which the source as well as the absorber can be cooled down to T = 2.3 K and a magnetic field up to 8 T can be applied, for 197Au en 57Fe-spectrometry. 

  • Gas-handling systems and reactors for investigation under different atmospheres. 

  • Equipment for cryogenic measurements down to T = 0.3 K and vacuum furnaces for measurements up to T = 800 K.

  • A high-pressure in-situ reactor for Mössbauer emission spectroscopy. This reactor is designed for measuring 57Co containing catalysts up to 40 bar (including 10 bar steam) and 723 K!