Nanosecond versus picosecond near UV multiphoton dissociation of ketene

被引：6

作者：

Castillejo, M ^{[1
]}

Martin, M ^{[1
]}

deNalda, R ^{[1
]}

Solis, J ^{[1
]}

机构：

[1] CSIC,INST OPT,E-28006 MADRID,SPAIN

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 268卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(97)00219-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The multiphoton dissociation of ketene at 308 and 290.5 nm has been studied using different laser pulse widths of 15 ns, 4 ns and 10 ps by observing the photofragment fluorescence in a static cell. Efficient emission from CH(A (2) Delta) and (B (2) Sigma(-)) was detected in both nanosecond and picosecond experiments. C-2 Swan bands were observed only with nanosecond pulses. These results are discussed invoking the competition between multiphoton absorption by the parent molecule and dissociation into possible intermediate photofragment precursors.

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页码：465 / 470

页数：6

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