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

Research output: Contribution to journalArticle

Abstract

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.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics

Keywords

  • fluorescence, laser-induced, temperature, pressure, formaldehyde, absorption
Original languageEnglish
Pages (from-to)821-828
JournalSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Volume60
Issue number4
Publication statusPublished - 2004
Publication categoryResearch
Peer-reviewedYes