Kinetic study on quenching of electronically excited SO2(A^1A2, B^1B1)

Acta Chimica Sinica ›› 1998, Vol. 56 ›› Issue (6): 538-543. Previous Articles Next Articles

Original Articles

电子激发态SO2(A^1A2, B^1B1)分子的碰撞猝灭动力学研究

张群;冉琴;陈从香;俞书勤;马兴孝

中国科学技术大学化学物理系

发布日期:1998-06-15

Kinetic study on quenching of electronically excited SO2(A^1A2, B^1B1)

ZHANG QUN;RAN QIN;CHEN CONGXIANG;YU SHUQIN;MA XINGXIAO

Published:1998-06-15

Abstract

The quenching rate constants of SO2(A^1A2, B^1B1) by some molecules were measured by using laser excitation (at 266nm) of SO2 into the first allowed absorption region (240-340nm) and observation of time resolved fluorescence SO2(B→X) methods. In addition, the formation cross sections of complex between SO2 (A and B) and quenchers were calculated by using collision complex model. The results imply that the quenching of SO2(A, B) is probably controlled by the entrance-channel and might be mainly ascribed to the contribution of chemical reactions.

Key words: SULFUR DIOXIDE, EXCITED STATE, HELIUM, CHLOROMETHANE, MOLECULE COLLISIONS

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ZHANG QUN;RAN QIN;CHEN CONGXIANG;YU SHUQIN;MA XINGXIAO. Kinetic study on quenching of electronically excited SO2(A^1A2, B^1B1)[J]. Acta Chimica Sinica, 1998, 56(6): 538-543.

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电子激发态SO2(A^1A2, B^1B1)分子的碰撞猝灭动力学研究

Kinetic study on quenching of electronically excited SO2(A^1A2, B^1B1)

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