Spontaneous Raman scattering by ground-state oxygen atoms
Authors:
- 1 January 1981
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 6 (1) , 36-38
Abstract
We report the first known observation of Raman scattering by oxygen atoms. The 3P2 →3P1 and 3P2 →3P0 transitions in the electronic ground state that produced Raman shifts of 158 and 227 cm−1 were detected. These transitions were observed in a fuel-lean atmospheric H2 + O2 flame. By comparing the O electronic and O2 pure-rotational Raman-scattering intensities, we measured the polarized cross sections for the two lines to be 6 ± 1 × 10−31 and 4 ± 1 × 10−31 cm2/sr, respectively, with an excitation source at 532.1 nm. These cross sections are two to three times stronger than those predicted by a single-configuration single-excitation Coulomb approximation.Keywords
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