Kinetic Studies for State-State Transition of SO2(X1A1,A1A2, B1B1) System Excited by266 nm Laser

Chem. J. Chinese Universities ›› 1997, Vol. 18 ›› Issue (9): 1511.

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Kinetic Studies for State-State Transition of SO₂(X¹A₁,A¹A₂, B¹B₁) System Excited by₂₆₆ nm Laser

ZHANG Qun, ZHANG Hua, CHEN Cong-Xiang, YU Shu-Qin, MA Xing-Xiao

Department of Chemical Physics, University of Science and Technology of China, Hefei 230026

Received:1996-08-27 Online:1997-09-24 Published:1997-09-24

Abstract

Abstract: The dispersed fluorescence spectrum of SO₂ (B¹B₁→X¹A₁. 320~380 nm) excitedby 266 nm laser lnto the first allowed absorptlon reglon (240~340 nm) where the high vibrational levels of A¹A₂ an B¹B₁ states are strongly coupled, and its preliminary assignment arepresented. Athree-level model ls proposed to deal with the SO₂ (X¹A₁, A¹A₂, B¹B₁) systern,and the coup1ing coefficlent, ξ, and the relaxation time, τ, at tlie high vibratlonal levels ofA¹A₂ and B1B1 states have been obtalned. The results show that ξ and τ keep basically constant under our exl)erimental conditions, which reflects the cI1aracteristics of the system.

Key words: Three-level model, Coupling coefficient, Relaxation time

CLC Number:

O643.2

TrendMD:

ZHANG Qun, ZHANG Hua, CHEN Cong-Xiang, YU Shu-Qin, MA Xing-Xiao. Kinetic Studies for State-State Transition of SO₂(X¹A₁,A¹A₂, B¹B₁) System Excited by₂₆₆ nm Laser[J]. Chem. J. Chinese Universities, 1997, 18(9): 1511.

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Kinetic Studies for State-State Transition of SO₂(X¹A₁,A¹A₂, B¹B₁) System Excited by₂₆₆ nm Laser

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