Vibrational spectroscopy and intramolecular dynamics of 1-butyne

Alexander Portnov; Salman Rosenwaks; Ilana Bar

doi:10.1063/1.1786923

Vibrational spectroscopy and intramolecular dynamics of 1-butyne

Alexander Portnov, Salman Rosenwaks, Ilana Bar

Department of Physics

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The photodissociation of jet-cooled, vibrationally excited 1-butyne and its photoacoustic (PA) spectra were investigated. The intramolecular vibrational energy distribution (IVR) lifetimes for 1-butyne were found to be ≈500 ps, and later on ≈70 ps. Rotational constants and estimates for the homogeneous broadening, arising from IVR to the bath vibrational states were obtained by asymmetric rotor simulation of the band contours. The results of the Doppler profiles of the H photofragments reveal that they are released with low average translational energies, thereby indicating the occurrence of indirect dissociation process following internal conversion to the ground state.

Original language	English
Pages (from-to)	5860-5867
Number of pages	8
Journal	Journal of Chemical Physics
Volume	121
Issue number	12
DOIs	https://doi.org/10.1063/1.1786923
State	Published - 22 Sep 2004

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/1.1786923

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title = "Vibrational spectroscopy and intramolecular dynamics of 1-butyne",

abstract = "The photodissociation of jet-cooled, vibrationally excited 1-butyne and its photoacoustic (PA) spectra were investigated. The intramolecular vibrational energy distribution (IVR) lifetimes for 1-butyne were found to be ≈500 ps, and later on ≈70 ps. Rotational constants and estimates for the homogeneous broadening, arising from IVR to the bath vibrational states were obtained by asymmetric rotor simulation of the band contours. The results of the Doppler profiles of the H photofragments reveal that they are released with low average translational energies, thereby indicating the occurrence of indirect dissociation process following internal conversion to the ground state.",

author = "Alexander Portnov and Salman Rosenwaks and Ilana Bar",

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AU - Portnov, Alexander

AU - Rosenwaks, Salman

AU - Bar, Ilana

PY - 2004/9/22

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N2 - The photodissociation of jet-cooled, vibrationally excited 1-butyne and its photoacoustic (PA) spectra were investigated. The intramolecular vibrational energy distribution (IVR) lifetimes for 1-butyne were found to be ≈500 ps, and later on ≈70 ps. Rotational constants and estimates for the homogeneous broadening, arising from IVR to the bath vibrational states were obtained by asymmetric rotor simulation of the band contours. The results of the Doppler profiles of the H photofragments reveal that they are released with low average translational energies, thereby indicating the occurrence of indirect dissociation process following internal conversion to the ground state.

AB - The photodissociation of jet-cooled, vibrationally excited 1-butyne and its photoacoustic (PA) spectra were investigated. The intramolecular vibrational energy distribution (IVR) lifetimes for 1-butyne were found to be ≈500 ps, and later on ≈70 ps. Rotational constants and estimates for the homogeneous broadening, arising from IVR to the bath vibrational states were obtained by asymmetric rotor simulation of the band contours. The results of the Doppler profiles of the H photofragments reveal that they are released with low average translational energies, thereby indicating the occurrence of indirect dissociation process following internal conversion to the ground state.

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JF - Journal of Chemical Physics

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ER -

Vibrational spectroscopy and intramolecular dynamics of 1-butyne

Abstract

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