Abstract
Dynamics of excited m-dichlorobenzene is investigated in real time by femtosecond pump-probe method, combined with time-of-flight mass spectrometric detection in a supersonic molecular beam. The yields of the parent ion and daughter ion C6H4Cl+ are examined as a function of the delay between the 270 and 810 nm femtosecond laser pulses, respectively. The lifetime of the first singlet excited state S1 of m-dichlorobenzene is measured. The origin of this daughter ion C6H4Cl+ is discussed. The ladder mechanism is proposed to form the fragment ion. In addition, our experimental results exhibit a rapid damped sinusoidal oscillation over intermediate time delays, which is due to quantum beat effects.
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Yuan, L., Wang, Y., Wang, L. et al. Dynamics of excited m-dichlorobenzene. Sc. China Ser. B-Chem. 47, 283–289 (2004). https://doi.org/10.1360/03yb0251
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DOI: https://doi.org/10.1360/03yb0251