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Article Dans Une Revue Journal of Chemical Physics Année : 2005

Rotational Raman spectroscopy of ethylene using a femtosecond time-resolved pump-probe technique

Résumé

Femtosecond Raman-induced polarization spectroscopy (RIPS) was conducted at low pressure (250 mb at 295 K and 400 mb at 373 K) in ethylene. The temporal signal, resulting from the beating between pure rotational coherences, was measured with a heterodyne detection. The temporal traces were converted to the frequency domain using a Fourier transformation and then analyzed thanks to the D2hTDS software (http://www.u-bourgogne.fr/LPUB/shTDS.html) dedicated to X2Y4 molecules with D2h symmetry. The effective Hamiltonian was expanded up to order 2, allowing the determination of five parameters with an rms of 0.017 cm(-1). Special care was taken in the precise modeling of intensities, taking into account all instrumental effects. Relative intensities were fitted (with an rms of 7.2%) and two polarizability operators were determined. (c) 2005 American Instituteof Physics.
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Dates et versions

hal-00399153 , version 1 (25-06-2009)

Identifiants

  • HAL Id : hal-00399153 , version 1

Citer

A. Rouzee, Vincent Boudon, B. Lavorel, O. Faucher, W. Raballand. Rotational Raman spectroscopy of ethylene using a femtosecond time-resolved pump-probe technique. Journal of Chemical Physics, 2005, 123 (15), pp.ISI:000232697900017. ⟨hal-00399153⟩
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