Vibrational Numbering and Potential Curves of O2(B3Σu−) Doped in Low-Temperature Ar and Kr Crystals
✍ Scribed by Hideo Kajihara; Tomoyuki Okamura; Seiichiro Koda
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 283 KB
- Volume
- 183
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
Ultraviolet absorption spectra due to B 3 S 0 u (v) R X 3 S 0 g (vЉ) transition of vibrationally excited O 2 ( 16 O 2 and 18 O 2 ) were observed under the irradiation of O 2 -doped Ar and Kr crystals by a KrF excimer laser (248nm). The energies of vibrational levels of B 3 S 0 u state were determined precisely using zero-phonon lines observed in the absorption spectra. The vibrational quantum numbering of B 3 S 0 u state reported previously by E. Boursey et al. (Chem. Phys. Lett. 5, 584-586 (1970)) and I. Ya. Fugol et al. (Opt. Spectrosk. 40, 159-163 (1976)) was raised by one on the basis of the isotope shift and comparison of the observed absorption intensity distribution with those of the calculated f-factors. The potential curves of the B 3 S 0 u state in the crystals were found to be stabilized by 471 cm 01 in Ar and 694 cm 01 in Kr, and steeper in the longer bondlength side.