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

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

Research output: Contribution to journalArticle

Abstract

The absolute photoabsorption, photoionisation and photodissociation cross sections and the photoionisation quantum efficiency of ethylene and deuterated ethylene have been measured from the ionisation threshold to 500 Å using a double ion chamber and monochromated synchrotron radiation. High resolution photoelectron spectra of the same molecules have been recorded using HeI and HeII radiation, and detailed analyses have been made of the vibrational structure exhibited in the X 2B3u, A2B3g, B 2Ag, C 2B2u and D 2B1u photoelectron bands. In the inner valence binding energy region the HeII excited spectrum shows several satellite features which are due to configuration interaction effects. The photoabsorption spectra display extensive vibrational structure extending from the ionisation threshold to approximately 630 Å. With the aid of the high resolution photoelectron spectra, many of these absorption features have been arranged into vibrational progressions associated with Rydberg states. Tentative assignments for some of these states have been proposed based upon an assessment of term values and quantum defects. A sum rule analysis has been carried out by combining the present absolute photoabsorption measurements with similar data covering the remaining wavelength regions.

Original languageEnglish
Pages (from-to)91-116
Number of pages26
JournalChemical Physics
Volume219
Issue number1
Publication statusPublished - 15 Jun 1997

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photoabsorption
photodissociation
photoelectron spectroscopy
photoelectrons
spectroscopy
photoionization
ethylene
ionization
thresholds
high resolution
ionization chambers
progressions
configuration interaction
sum rules
quantum efficiency
synchrotron radiation
coverings
binding energy
valence
cross sections

Cite this

Holland, D. M. P., Shaw, D. A., Hayes, M. A., Shpinkova, L. G., Rennie, E. E., Karlsson, L., ... Wannberg, B. (1997). A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4. Chemical Physics, 219(1), 91-116.
Holland, D. M P ; Shaw, D. A. ; Hayes, M. A. ; Shpinkova, L. G. ; Rennie, E E ; Karlsson, L. ; Baltzer, P. ; Wannberg, B. / A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4. In: Chemical Physics. 1997 ; Vol. 219, No. 1. pp. 91-116.
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Holland, DMP, Shaw, DA, Hayes, MA, Shpinkova, LG, Rennie, EE, Karlsson, L, Baltzer, P & Wannberg, B 1997, 'A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4', Chemical Physics, vol. 219, no. 1, pp. 91-116.

A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4. / Holland, D. M P; Shaw, D. A.; Hayes, M. A.; Shpinkova, L. G.; Rennie, E E; Karlsson, L.; Baltzer, P.; Wannberg, B.

In: Chemical Physics, Vol. 219, No. 1, 15.06.1997, p. 91-116.

Research output: Contribution to journalArticle

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AU - Shaw, D. A.

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AU - Rennie, E E

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AU - Baltzer, P.

AU - Wannberg, B.

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Holland DMP, Shaw DA, Hayes MA, Shpinkova LG, Rennie EE, Karlsson L et al. A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4. Chemical Physics. 1997 Jun 15;219(1):91-116.