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首次研究了二乙胺分子的多光子电离（ＭＰＩ）过程。实验是在无碰撞的高真空状态下进行的，用飞行时间质谱仪获得了染料激光器在４６４～４８６ｎｍ波段的二乙胺分子ＭＰＩ质谱（ＭＳ）。母体离子由经（ｎＮ，３ｓ）里德堡态的（２＋２）共振增强多光子电离（ＲＥＭＰＩ）产生。各种离子强度随激光波长和强度的变化表明，碎片离子阶梯模型产生了二乙胺分子ＭＰＩ的碎片离子分布。母体离子经α－键和拟－α键断裂形成初级碎片离子，它们进一步吸收光子并碎裂产生次级碎片离子。利用速率方程进行的定量分析得到了与实验结果相符的结果，并估计了二乙胺分子ＭＰＩ过程的动力学参数。
The multiphoton ionization (MPI) process of diethylamine was first studied. The experiments were carried out in a high-collision-free state. The MPI mass spectrometry (MS) of diethylamine was carried out at 464 ~ 486 nm by the time-of-flight mass spectrometer. The parent ion is generated by (2 + 2) resonance enhanced multiphoton ionization (REMPI) via the (nN, 3s) Rydberg state. The variation of various ion intensities with the wavelength and intensity of the laser indicates that the fragment ion ladder model produces the fragment ion distribution of the diethylamine MPI. The precursor ions are broken by α-bonds and pseudo-α bonds to form primary fragment ions, which further absorb photons and fragment to give secondary fragment ions. Quantitative analysis using rate equations yielded results in agreement with the experimental results and estimated the kinetic parameters of the diethylamine molecular MPI process.