Fink EH, Ramsay DA
Fachbereich 9, Bergische Universitat-Gesamthochschule Wuppertal, Wuppertal, D-42097, Federal Republic of Germany
J Mol Spectrosc. 1997 Oct;185(2):304-24. doi: 10.1006/jmsp.1997.7401.
The near-infrared emission spectrum of the A2A' --> X2A" transition of the hydroperoxyl radical, HO2, has been studied by Fourier transform spectrometry. The 000 --> 000 band has been recorded at high spectral resolution. DeltaKa = +/-1 subbands up to Ka' = 9 --> Ka" = 8 and Ka' = 8 --> Ka" = 9 comprising lines from rotational levels up to N' = 32 have been observed. With about a factor of 10 lower intensity, DeltaKa = 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 Ka' = 0-7 levels of the A2A' state. One series of perturbations is attributed to DeltaKa = 0, DeltaJ = 0 interactions with the 112 level of the X2A" ground state. Copyright 1997 Academic Press. Copyright 1997Academic Press
通过傅里叶变换光谱法研究了氢过氧自由基HO2的A2A'→X2A"跃迁的近红外发射光谱。以高光谱分辨率记录了000→000带。观察到了高达Ka' = 9→Ka" = 8和Ka' = 8→Ka" = 9的ΔKa = +/-1子带，包括来自高达N' = 32的转动能级的谱线。发现强度约低10倍的ΔKa = 0子带0 - 0至6 - 6，其被证明是由于磁偶极跃迁。此外，在2 - 2子带中观察到了“禁戒”电偶极谱线。这些可能是由Renner - Teller相互作用引起的。在A2A'态的Ka' = 0 - 7能级中发现了延伸3 - 10个N'值的局部微扰。一系列微扰归因于与X2A"基态的112能级的ΔKa = 0、ΔJ = 0相互作用。版权所有1997年学术出版社。版权所有1997年学术出版社
