High-Resolution Study of theÃ2A′ → X2A″ Transition of HO2: Analysis of the 000–000 Band

✍ Scribed by E.H. Fink; D.A. Ramsay

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 719 KB
• Volume: 185
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1997.7401

✦ Synopsis

The near-infrared emission spectrum of the A ˜2A r X ˜2AЉ transition of the hydroperoxyl radical, HO 2 , has been studied by Fourier transform spectrometry. The 000 r 000 band has been recorded at high spectral resolution. DK a Å {1 subbands up to K a Å 9 r KЉ a Å 8 and K a Å 8 r KЉ a Å 9 comprising lines from rotational levels up to N Å 32 have been observed. With about a factor of 10 lower intensity, DK a Å 0 subbands 0-0 to 6-6 were found which are shown to be due to magnetic dipole transitions. In addition, in the 2-2 sub-band ''forbidden'' electric dipole lines were observed. These likely are induced by Renner-Teller interaction. Local perturbations extending over 3-10 N values are found in the K a Å 0-7 levels of the A ˜2A state. One series of perturbations is attributed to DK a Å 0, DJ Å 0 interactions with the 112 level of the X ˜2AЉ ground state.