High-resolution gas phase spectroscopy with a synchrotron radiation source

High-resolution synchrotron infrared spectroscopy of thiophosgene: The ν2 and ν4 fundamental bands near 500 cm−1

“…More recently there have been promising demonstrations that the brightness of synchrotron sources is useful for gas-phase studies with high spectral resolution, particularly in the far-infrared region [13][14][15][16]. At the CLS, the far-infrared beamline has already been used for detailed studies of a number of molecules, including acrolein [17][18][19], thiophene [20], pyrrole [21], b-propiolactone [22], methyl silane [23], and methanol [24].…”

High-Resolution Infrared Study of the ν11 Band of Allene

“…The spectrum of ν 11 was measured in the region 280-380 cm −1 using synchrotron radiation from the MAX-I electron storage ring at the University of Lund (6). The radiation was focused on the entrance aperture of a Bruker IFS-120 HR FTIR instrument using an unapodized resolution of 0.00125 cm −1 .…”

High-resolution infrared spectroscopy with synchrotron sources

“…This beamline has enjoyed a very productive history over the past 15 years [11][12][13][14][15][16][17][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] , achieving a remarkable standard deviation of just 0.00010 cm À1 for some 1900 fitted transitions. The first figure of this paper is reproduced here as Fig.…”

“…6. Also, high-resolution spectra have been measured for a sample of tetrafluoroethylene (C 2 F 4 ) isotopically enriched in 13 C, for which preliminary work is focused on the C-F stretching modes. The analysis is of fundamental interest in that the rotational constants should allow the gasphase structure of this molecule to be accurately determined, and it is also significant given that this molecule is involved in some laser-induced isotopic enrichment schemes.…”

“…This is essentially because Fourier transform spectrometers (FTS), which are based on the Michelson interferometer principle, need smaller entrance apertures for higher resolution, just as grating spectrometers need narrower slits. Although a gas-phase IR spectrum was recorded as early as 1985 using SR and an FTS at the BESSY facility near Hamburg [4], it was in the mid-1990s that the first dedicated IR beamline for high-resolution gas-phase studies was built by Bengt Nelander in Sweden [11][12][13]. This is beamline 73 on the Max I storage ring of MAX-lab at the University of Lund.…”