A study of the S(3P2,1,0;1D2) production in the 193 nm photodissociation of CH3S(X)

Article abstract of DOI:10.1063/1.463690

The dynamics of S(³P_2,1,0;¹D₂) production from the 193 nm photodissociation of CH3SCH3 has been studied using 2 + 1 resonance-enhanced multiphoton ionization techniques.The 193 nm photodissociation cross section for the formation of S from CH3S initially prepared in the photodissociation of CH3SCH3 is estimated to be 1 x 10^-18 cm².The branching ratio for S(³P)/S(¹D) is found to be 0.15/0.85.The fine-structure distribution observed for product S(³P_2,1,0) is nearly statistical.Possible potential energy surfaces involved in the 193 nm photodissociation of CH3S(<*>X) have been examined theoretically along the CH3-S dissociation coordinate in C_3v symmetry.These calculations suggest that predissociation of CH3S (<*>C²A₂) via the repulsive CH3S(<*>E²E) surface is most likely responsible for the efficient production of S(¹D).For vibrationally excited CH3S(<*>X), a viable mechanism for the dominant production of S(¹D) may involve direct dissociation via the CH3S(<*>E²E) state formed in the 193 nm photoexcitation.

Full text of DOI:10.1063/1.463690

A study of the S(3 P 2,1,0;1 D 2) production in the 193 nm photodissociation of
CH3S(X
̃)
C.W. Hsu, C.L. Liao, Z.X. Ma, P. J. H. Tjossem, and C. Y. Ng
Citation: The Journal of Chemical Physics 97, 6283 (1992); doi: 10.1063/1.463690
View online: http://dx.doi.org/10.1063/1.463690
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/97/9?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Tue, 25 Nov 2014 11:40:59

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Tue, 25 Nov 2014 11:40:59

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Tue, 25 Nov 2014 11:40:59

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Tue, 25 Nov 2014 11:40:59

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Tue, 25 Nov 2014 11:40:59