Excited electronic structure of methylcyanoacetylene probed by VUV Fourier-transform absorption spectroscopy - Archive ouverte HAL Access content directly
Journal Articles Journal of Quantitative Spectroscopy and Radiative Transfer Year : 2016

Excited electronic structure of methylcyanoacetylene probed by VUV Fourier-transform absorption spectroscopy

Abstract

High resolution photoabsorption spectrum of gas-phase methylcyanoacetylene (CH3C3N) has been recorded from 44 500 to 130 000 cm−1 at room temperature with a vacuum ultraviolet Fourier-transform spectrometer on the DESIRS synchrotron beamline (SOLEIL). The absolute photoabsorption cross section in this range is reported for the first time. Valence shell transitions and Rydberg series converging to the ground state X˜+E2 of the cation as well as series converging to electronically excited states (A˜+A12 and C˜+) are observed and assigned. Time-dependent density-functional-theory calculations have been performed to support the assignment of the experimental spectrum in the low energy range. A tentative scaling of the previously measured CH3C3N+ ion yield by Lamarre et al. [17] is proposed, based on the comparison of the absorption data above the first ionization potential with the observed autoionization structures.
Fichier principal
Vignette du fichier
Excited electronic structure of methylcyanoacetylene.pdf (511.12 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01367230 , version 1 (07-11-2016)

Identifiers

Cite

N. Lamarre, B. Gans, L.A. Vieira Mendes, M. Gronowski, J.-C. Guillemin, et al.. Excited electronic structure of methylcyanoacetylene probed by VUV Fourier-transform absorption spectroscopy. Journal of Quantitative Spectroscopy and Radiative Transfer, 2016, 182, pp.286--295. ⟨10.1016/j.jqsrt.2016.06.020⟩. ⟨hal-01367230⟩
114 View
109 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More