【摘要】 用可调谐染料激光器 ,在 4 5 0— 4 75 nm范围内 ,在飞行时间质谱仪上研究了三氯乙烯分子的共振增强多光子电离解离过程。研究表明 ,在此实验波段内三氯乙烯分子经历了从 π到 3d里德堡态的 (3+1 )多光子过程 ,可以用母体离子阶梯开关模型对三氯乙烯的电离解离过程进行解释 ,并对振动能级进行了标识 ,对振动频率进行了计算更多还原

【Abstract】 The time of flight(TOF) mass spectroscopy was used to study trichloroethylene.It was found that in the tunable wavelength range of 450—475nm,(3+1) multiphoton ionization process via 3 d Rydberg←π transitions dominate the observed REMPI spectra. Mass analysis of ion fragmentation patterns reveals a ladder swithing excitation model. The dissociation path and mechanism of trichloroethylene is discussed in detail.The vibronic energy level was assigned and the vibronic frequency of 3 d Rydberg state was calculated from the experimental date.更多还原