High-resolution infrared spectroscopy with synchrotron sources

McKellar, A. R. W.

doi:10.1016/j.jms.2010.04.006

Cited by 88 publications

(19 citation statements)

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“…In the first spectrum (600-4500 cm −1 ) the gas pressure was set to about 0.05 mbar (in order to optimize the detection of the ν 28 mode) and the acquisition time was about 24 h. In the second spectrum (33-600 cm −1 ) we have made use of the SOLEIL synchrotron FIR radiation extracted by the AILES beamline as the continuum source of the FT interferometer, resulting in a significant improvement of the signal-to-noise ratio in comparison with the globar source. [31][32][33][34] For this experiment, the ring current was 300 mA in a "top-up" mode. The FTIR spectrometer was equipped with a He-cooled bolometer detector and a 6 μm mylar beamsplitter.…”

Section: A Experimentsmentioning

confidence: 99%

Rotationally resolved infrared spectroscopy of adamantane

Pirali

Boudon

Oomens

et al. 2012

The Journal of Chemical Physics

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Rotationally resolved infrared spectroscopy of adamantanePirali, O.; Boudon, V.; Oomens, J.; Vervloet, M. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We present the first rotationally resolved spectra of adamantane (C 10 H 16 ) applying gas-phase Fourier transform infrared (IR) absorption spectroscopy. High-resolution IR spectra are recorded in the 33-4500 cm −1 range using as source of IR radiation both synchrotron radiation (at the AILES beamline of the SOLEIL synchrotron) as well as a classical globar. Adamantane is a spherical top molecule with tetrahedral symmetry (T d point group) and has no permanent dipole moment in its vibronic ground state. Of the 72 fundamental vibrational modes in adamantane, only 11 are IR active. Here we present rotationally resolved spectra for seven of them: ν 30 , ν 28 , ν 27 , ν 26 , ν 25 , ν 24 , and ν 23 . The typical rotational structure of spherical tops is observed and analyzed using the STDS software developed in the Dijon group, which provides the first accurate energy levels and rotational constants for seven fundamental modes. Rotational levels with quantum numbers as high as J = 107 have been identified and included in the fit leading to a typical standard deviation of about 10 −3 cm −1 .

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Section: A Experimentsmentioning

confidence: 99%

Rotationally resolved infrared spectroscopy of adamantane

Pirali

Boudon

Oomens

et al. 2012

The Journal of Chemical Physics

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“…[23]) the t 3 and t 6 far infrared bands are experimentally challenging, thus no broad band high resolution studies had been undertaken before the advent of synchrotron-based IR facilities. Synchrotron radiation (SR) provides intrinsic advantages (brightness, stability, small beam divergence) which give an important signal-to-noise ratio gain allowing the observation of weak ro-vibrational bands at high resolution in the FIR region [28][29][30][31].…”

Section: Methodsmentioning

confidence: 99%

High resolution investigation of the v3 band of trifluoromethyliodide (CF3I)

Willaert

Roy

Manceron

et al. 2015

Journal of Molecular Spectroscopy

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“…The optics were adjusted to obtain an optical pathlength of 150 m (60 passes). Compared with conventional sources (globar or mercury lamp), the synchrotron continuum extracted by the AILES beamline permits to obtain large improvement of the S/N ratio [27,28] (more than 10 times better in the 70-150 cm À1 spectral range and about 4-5 times better elsewhere). The 15-70 cm À1 spectrum was recorded using the synchrotron radiation as the FIR continuum source, a 6 lm mylar foil beamsplitter and a 1.6 K helium cooled silicon bolometer detector.…”

Section: Methodsmentioning

confidence: 99%