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利用可调谐染料激光研究了丁酮分子的共振增强多光子电离解离过程 ,发现在 42 8～ 44 8nm激光波段丁酮分子发生的是经 4p和 4dRydberg态的 ( 3 + 1)多光子过程 .此外 ,我们还用“梯开关”模型对丁酮母体离子的解离机理和各碎片离子的来源作了详细的分析 ,分析认为在丁酮母体离子的解离过程中存在H原子重排与电荷的重新分布现象
The tunable dye laser was used to study the resonance enhanced multiphoton ionization dissociation of butanone molecules. It was found that the (3 + 1) multiphoton processes via 4p and 4dRydberg states occurred at butanone molecules in the band of 42 8 ~ 44 8 nm. In addition, we also used the “ladder switch” model to analyze the dissociation mechanism of butanone precursor ions and the source of each fragment ion in detail. It is concluded that there are H atom rearrangement and charge in the dissociation of butanone precursor ions Redistribution of the phenomenon