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High-Resolution Study of the Atilde;2A′→X̃2A″ Transition of DO2: Analysis of the 000–000 Band

✍ Scribed by E.H. Fink; D.A. Ramsay

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
354 KB
Volume
216
Category
Article
ISSN
0022-2852

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✦ Synopsis

The near-infrared emission spectrum of the Ã2 A → X 2 A transition of DO 2 has been studied by Fourier-transform spectrometry. The 000 → 000 band has been recorded at high spectral resolution. K a = ±1 subbands up to K a = 12 → K a = 11 and K a = 9 → K a = 10, comprising lines from rotational levels up to N = 34, have been observed. With about a factor of 5-10 lower intensity, K a = 0 subbands 0-0 to 6-6 were found, which are due to magnetic dipole transitions. Several local perturbations extending over 3-10 N values were observed. Two prominent perturbations in the F 1 levels of the Ã2 A , 000, K a = 11 and 12 states are attributed to K a = 0, J = 0, N = ±1 interactions with the 211 level of the X 2 A ground state. The rotational constants for HO 2 and DO 2 have been used to deduce the molecular geometry of HO 2 at the zero point levels of the X 2 A and Ã2 A states.

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