A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4

Holland, D.M.P.; Shaw, David; Hayes, M. A.; Shpinkova, L.G.; Rennie, Emma E.; Karlsson, Lennart; Baltzer, P.; Wannberg, B.

doi:10.1016/s0301-0104(97)00090-6

Cited by 103 publications

(79 citation statements)

References 67 publications

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“…The C 2 H 2 cross sections are taken from Cooper et al (1995) for 6.2-136 nm (298 K) and from Smith et al (1991) for 136-201.5 nm (295 K). For C 2 H 4 we use the cross sections from Holland et al (1997) for 0.125-185 nm (298 K), and for C 2 H 6 the cross sections are taken from Au et al (1993) for 5.6-120 nm (298 K) and from Lee et al (2001) for 120-160 nm (295 K). All of these cross sections have been retrieved from the MPI-Mainz-UV-VIS Spectral Atlas of Gaseous Molecules (http:// www.atmosphere.mpg.de/spectral-atlas-mainz).…”

Section: Synthetic Light Curve Creationmentioning

confidence: 99%

New Horizons Alice ultraviolet observations of a stellar occultation by Jupiter’s atmosphere

Greathouse

Gladstone

Moses

et al. 2010

Icarus

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Section: Synthetic Light Curve Creationmentioning

confidence: 99%

New Horizons Alice ultraviolet observations of a stellar occultation by Jupiter’s atmosphere

Greathouse

Gladstone

Moses

et al. 2010

Icarus

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“…Similarly to C 2 H 4 [39] the PAS of C 2 H 3 F shows a first strong and broad band centered on a maximum at 7.6 eV (61 300 cm -1 or 163.1 nm) in good agreement with the earlier determination of Bélanger and Sandorfy [19] at 166.5 nm (7.45 eV or 60 060 cm -1 ) and of Sze et al [20] at about 7.5 eV (60 570 cm -1 or 165.1 nm). This band is unanimously assigned to the 2a" → π * (also called π → π * ) transition.…”

Section: The Valence-to-valence Transitionsmentioning

confidence: 99%

The vacuum UV photoabsorption spectroscopy of vinyl fluoride (C2H3F): The vibrational fine structure and its analysis

et al. 2009

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The vacuum UV photoabsorption spectrum of C 2 H 3 F has been examined in detail between 6 eV and 25 eV photon energy by using synchrotron radiation. The analysis of the data is supported by ab initio quantum mechanical calculations applied to valence and Rydberg excited states of C 2 H 3 F. At 7.6 eV the π → π * and the 2a" → 3s transitions are observed. An analysis is proposed and applied to the mixed fine structure belonging to these transitions. For the π → π * transition one single long vibrational progression is observed with hcω e = 95 ± 7 meV (766 ± 56 cm -1 ) and its adiabatic excitation energy is 6.892 eV (55 588 cm -1 ). The 2a" → 3s transition is characterized by a single short progression with hcω e = 167 ± 10 meV (1350 ± 80 cm -1 ) starting at 6.974 eV (56 249 cm -1 ). From the present ab initio calculations these two wavenumbers best correspond to the vibrational modes υ 9 (CH 2 rock in-plane, FCC-bend) and υ 6 (CH 2 rock in-plane, CF stretch) calculated at 615 cm -1 in the π * state and 1315 cm -1 in the ( 2 A")3s Rydberg state respectively. The C=C stretching could not be excluded. The dense structured spectrum observed between 8.0 eV and 10.5 eV has been analyzed in terms of vibronic transitions to Rydberg states all converging to the C 2 H 3 F + (X A") ionic ground state. An analysis of the associated complex fine structure of the individual Rydberg states has been attempted providing average values of the wavenumbers, e.g., for the ( 2 A")3p Rydberg state hcω 9 = 60 ± 1 meV (or 484 ± 8 cm -1 ), hcω 7 = 151 ± 7 meV (or 1218 ± 60 cm -1 ), hcω 4 = 191 ± 3 meV (or 1540 ± 24 cm -1 ). The assignment of hcω = 105 ± 5 meV (or 823 ± 40 cm -1 ) is discussed. These experimental values are in good agreement with the theoretical predictions for C 2 H 3 F + [R. Locht, B. Leyh, D. Dehareng, K. Hottmann, H. Baumgärtel, Chem. Phys. (in press)]. Above 10.5 eV and up to 25 eV several broad and strong bands are tentatively assigned to transitions to valence (V-V) and/or Rydberg (V-R) states converging to excited ionic states of C 2 H 3 F.

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“…It also A&A 594, A47 (2016) plays a role in the formation mechanism of benzene in Titan's atmosphere through the reaction with C 4 H + 2 to form the precursor C 6 H + 5 (Yang et al 2012). Additionally, photoabsorption, photodissociation, and photoelectron spectroscopic studies of ethylene have been reported (see Cooper et al 1995;Holland et al 1997;Wu et al 2004) with measurements of the temperaturedependent cross-section in the VUV region between 118 and 192 nm.…”

Section: Introductionmentioning

confidence: 98%

First theoretical global line lists of ethylene (¹²C₂H₄) spectra for the temperature range 50−700 K in the far-infrared for quantification of absorption and emission in planetary atmospheres

Rey

Delahaye

Nikitin

et al. 2016

A&A

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We present the construction of complete and comprehensive ethylene line lists for the temperatures 50−700 K based on accurate ab initio potential and dipole moment surfaces and extensive first-principle calculations. Three lists spanning the [0−6400] cm −1 infrared region were built at T = 80, 160, and 296 K, and two lists in the range [0−5200] cm −1 were built at 500 and 700 K. For each of these five temperatures, we considered possible convergence problems to ensure reliable opacity calculations. Our final list at 700 K was computed up to J = 71 and contains almost 60 million lines for intensities I > 5 × 10 −27 cm/molecule. Comparisons with experimental spectra carried out in this study showed that for the most active infrared bands, the accuracy of band centers in our theoretical lists is better on average than 0.3 cm −1 , and the integrated absorbance errors in the intervals relevant for spectral analyses are about 1−3%. These lists can be applied to simulations of absorption and emission spectra, radiative and non-LTE processes, and opacity calculations for planetary and astrophysical applications.

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A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4

Cited by 103 publications

References 67 publications

New Horizons Alice ultraviolet observations of a stellar occultation by Jupiter’s atmosphere

New Horizons Alice ultraviolet observations of a stellar occultation by Jupiter’s atmosphere

The vacuum UV photoabsorption spectroscopy of vinyl fluoride (C2H3F): The vibrational fine structure and its analysis

First theoretical global line lists of ethylene (¹²C₂H₄) spectra for the temperature range 50−700 K in the far-infrared for quantification of absorption and emission in planetary atmospheres

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A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4

Cited by 103 publications

References 67 publications

New Horizons Alice ultraviolet observations of a stellar occultation by Jupiter’s atmosphere

New Horizons Alice ultraviolet observations of a stellar occultation by Jupiter’s atmosphere

The vacuum UV photoabsorption spectroscopy of vinyl fluoride (C2H3F): The vibrational fine structure and its analysis

First theoretical global line lists of ethylene (12C2H4) spectra for the temperature range 50−700 K in the far-infrared for quantification of absorption and emission in planetary atmospheres

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First theoretical global line lists of ethylene (¹²C₂H₄) spectra for the temperature range 50−700 K in the far-infrared for quantification of absorption and emission in planetary atmospheres