Laser Chemistry

Laser Chemistry / 1994 / Article
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Recent Advance in Laser Molecular Spectroscopy of Polyatomic Molecules and Small Clusters: Part 1

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Volume 13 |Article ID 046176 |

Haruo Abe, "The Origin of SO2 Afterglows as Revealed by Magnetic Field Effects", Laser Chemistry, vol. 13, Article ID 046176, 17 pages, 1994.

The Origin of SO2 Afterglows as Revealed by Magnetic Field Effects

Received14 Mar 1993


The chemiluminescence intensity in the low pressure diffusion flame of the CS2 + O/N2 system was found to be considerably affected by external magnetic fields. The emitter in the flame was identified as the main emitter in the SO2 afterglow. The measurements of the field strength dependence, collisional effect, and spectral distribution of the magnetic field effect revealed the major emitter as the SO2 in the C˜ state. External magnetic fields were also found to quench fluorescence remarkably emitted from the vibronic levels just below the predissociation threshold in the C˜ state. From the observed vibrational-level, field-strength, and pressure dependences of the magnetic quenching, it became evident that the major emitter of chemiluminescence in the flame could be assigned to the SO2 molecule in the vibronic levels located at about 800 cm–1 below the predissociation threshold in the C˜ state

Copyright © 1994 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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