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Ultrafast dynamics of cationic electronic states of vinyl bromide by strong-field ionization-photofragmentation 下载免费PDF全文
Strong field ionization-photofragmentation(SFI-PF)with ultrafast pump–probe scheme is a powerful approach to study the dynamics of molecular cationic electronic states.Here we carry out a SFI-PF study on the cationic electronic states of vinyl bromide,C2H3Br.The yields of the parent C2H3Br+and the formation of the fragment(Br+,C2H+2 and C2H+3)ions have been measured at different pump–probe delay time.Analysis provides experimental evidence of A2A'–X2A' internal conversion of vinyl bromide cations which occurs in a time of about 220 fs,and the time of C2H3+ formation induced by the dissociation of the A2A' state around 300 fs.The study would add our knowledge of the behavior of electronic excited states of complex molecular cations. 相似文献
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