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Absorption of formaldehyde (H2CO) in the (A)over-tilde(1)A(2)

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Author

Summary, in English

The electronic A(1)A(2) <-- X(1)A(1) absorption spectra of formaldehyde vapour were studied at temperatures varying from 423 to 770 K with variable pressures from less than 0.1 to 1 MPa. Broadband vibronic and partially rotationally resolved 4(n)(1) rovibronic spectra of formaldehyde showed considerable sensitivity to temperature. The high resolution spectra showed collision-induced broadening as the pressure was increased. The results show that the absorption efficiency of the laser radiation front the third harmonic of Nd:YAG lasers is sensitive to the spectral properties of the laser, such as line position and shape. Promising results were obtained from the comparison between theoretical and measured absorption spectra.

Department/s

Publishing year

2004

Language

English

Pages

821-828

Publication/Series

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Volume

60

Issue

4

Document type

Journal article

Publisher

Elsevier

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • fluorescence
  • laser-induced
  • temperature
  • pressure
  • formaldehyde
  • absorption

Status

Published

ISBN/ISSN/Other

  • ISSN: 1386-1425