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Last modified: 2010-10-18

Beamline 73 - Short information

Beamline 73 has two experimental stations. One is used for high resolution infrared spectroscopy, primarily in the far infrared. This station is equipped with a high resolution FTIR spectrometer with several options for introducing samples which may be gases, liquids or solids. For absorption spectroscopy on dilute and/or fragile molecular species a long optical path length (120 m) gas cell is available.

The second station has an FTIR spectrometer connected to an IR microscope and is used for infrared spectroscopy on microsamples.

Contact person:

Bengt Nelander, Kemisk Fysik, Kemicentrum Lund University, beamline manager

Per Uvdal, MAX-lab

Anders Engdahl, MAX-lab

References:

  • 'Observation and rovibrational analysis of the intermolecular HCl libration band ν41 in  OC-HCl. Modeling of the intermolecular potential energy surface'.
    R. Wugt Larsen, F. Hegelund, and B. Nelander, J. Phys. Chem. A 108, 1524 (2004).
  • 'High resolution gas phase spectroscopy with a synchrotron radiation source'.
    M. S. Johnson and B. Nelander, Il Nuovo Cimento 20 (4), 449 (1998).
    [This article is also Chapter 5 of the book: 'Infrared Synchrotron Radiation'. P. Calvani and P. Roy, eds., Italian Physical Society, Bologna (1998)]
  • 'The equilibrium structure of trans-glyoxal from experimental rotational constants and calculated vibration–rotation interaction constants'.
    René Wugt Larsen, Filip Pawłowski, Flemming Hegelund, Poul Jørgensen, Jürgen Gauss and Bengt Nelander, Phys. Chem. Chem. Phys. 5, 5031 (2003).
  • 'High-resolution infrared and microwave study of the ν20 and ν21 levels near 300 cm-1 in 1,2,4-triazine'.
    F. Hegelund, R. Wugt Larsen, B. Nelander, D. Christen, and M. H. Palmer, J. Mol. Spectrosc. 217, 9 (2003).

  • 'Studies of intermolecular vibrations in hydrogen-bonded molecular complexes for the gas phase using a synchrotron radiation source'.
    R. Wugt Larsen, F. Hegelund, B. Nelander, Molecular Physics, 102 (16-17), 1743 (2004). 

Technical data:

Source Bending magnet, 60 x 100 mrad2.
Pre-focusing optics Two ellipsoidal mirrors.
Exit window Single crystal quartz, silicon or CsI at Brewster's angle.
Photon flux from storage ring 1013 - 1014 ph/s/cm-1.
High resolution spectroscopy station Bruker IFS 120 HR FTIR spectrometer with an unapodized resolution of 0.00084cm-1, spectral range 10 - 10 000 cm-1. Samples may be brought into the beam in a variety of ways allowing measurements on both solid, liquid and gaseous samples. As detectors a narrow band MCT is used in the mid-infrared, and a Cu doped Ge detector and Si
bolometers in the far-infrared. A 120 m optical path-length gas-cell is available for experiments from 80 K to 350 K.
IR microscopy station A Bruker 66V FTIR spectrometer with an unapodized resolution of 0.25 cm-1 coupled to a Bruker Hyperion 3000 IR microscope. The microscope has InSb and MCT detectors for near and mid infrared measurements and an Si bolometer for far infrared spectroscopy. An MCT array detector (128x128 elements) allows simultaneous infrared imaging of extended sample regions.
2006-01-19