Spectroscopic investigation of the G band of SO2

A. Dastageer; E. Hegazi; A. Hamdan; F. Al-Adel

doi:10.1016/S0009-2614(97)00770-7

Spectroscopic investigation of the G band of SO₂

A. Dastageer^*
, E. Hegazi
, A. Hamdan
, F. Al-Adel

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The spectral region of Clements' G band (33150-33400 cm^-1) of SO₂ was investigated in a crossed supersonic jet and laser beams under low rotational temperature. Ten vibronic origins were identified within the region and their dispersed fluorescence spectra were separately excited and measured. The most intense peak of the G band was found to be composed of two adjacent vibronic bands, separated by only 5 cm^-1 and having different Franck-Condon patterns for the (n, 0,0)″ and (0, m, 0)″ progressions in their dispersed fluorescence spectra. The results were qualitatively interpreted on the basis of a multilevel vibronic coupling between the ¹B₁ and ¹A₂ electronic states and were used to explain the observed nonradiative vibronic relaxation.

Original language	English
Pages (from-to)	283-290
Number of pages	8
Journal	Chemical Physics Letters
Volume	275
Issue number	3-4
DOIs	https://doi.org/10.1016/S0009-2614(97)00770-7
State	Published - 29 Aug 1997

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/S0009-2614(97)00770-7

Cite this

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title = "Spectroscopic investigation of the G band of SO2",

abstract = "The spectral region of Clements' G band (33150-33400 cm-1) of SO2 was investigated in a crossed supersonic jet and laser beams under low rotational temperature. Ten vibronic origins were identified within the region and their dispersed fluorescence spectra were separately excited and measured. The most intense peak of the G band was found to be composed of two adjacent vibronic bands, separated by only 5 cm-1 and having different Franck-Condon patterns for the (n, 0,0)″ and (0, m, 0)″ progressions in their dispersed fluorescence spectra. The results were qualitatively interpreted on the basis of a multilevel vibronic coupling between the 1B1 and 1A2 electronic states and were used to explain the observed nonradiative vibronic relaxation.",

author = "A. Dastageer and E. Hegazi and A. Hamdan and F. Al-Adel",

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TY - JOUR

T1 - Spectroscopic investigation of the G band of SO2

AU - Dastageer, A.

AU - Hegazi, E.

AU - Hamdan, A.

AU - Al-Adel, F.

PY - 1997/8/29

Y1 - 1997/8/29

N2 - The spectral region of Clements' G band (33150-33400 cm-1) of SO2 was investigated in a crossed supersonic jet and laser beams under low rotational temperature. Ten vibronic origins were identified within the region and their dispersed fluorescence spectra were separately excited and measured. The most intense peak of the G band was found to be composed of two adjacent vibronic bands, separated by only 5 cm-1 and having different Franck-Condon patterns for the (n, 0,0)″ and (0, m, 0)″ progressions in their dispersed fluorescence spectra. The results were qualitatively interpreted on the basis of a multilevel vibronic coupling between the 1B1 and 1A2 electronic states and were used to explain the observed nonradiative vibronic relaxation.

AB - The spectral region of Clements' G band (33150-33400 cm-1) of SO2 was investigated in a crossed supersonic jet and laser beams under low rotational temperature. Ten vibronic origins were identified within the region and their dispersed fluorescence spectra were separately excited and measured. The most intense peak of the G band was found to be composed of two adjacent vibronic bands, separated by only 5 cm-1 and having different Franck-Condon patterns for the (n, 0,0)″ and (0, m, 0)″ progressions in their dispersed fluorescence spectra. The results were qualitatively interpreted on the basis of a multilevel vibronic coupling between the 1B1 and 1A2 electronic states and were used to explain the observed nonradiative vibronic relaxation.

UR - https://www.scopus.com/pages/publications/0031590081

U2 - 10.1016/S0009-2614(97)00770-7

DO - 10.1016/S0009-2614(97)00770-7

M3 - Article

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SN - 0009-2614

VL - 275

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EP - 290

JO - Chemical Physics Letters

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