Study of multi-photon ionization mass spectra of triethylamine at the laser of 266 nm

Using the four-harmonic YAG laser as excitation source, studying on the process of resonance-enhanced two-photon ionization of triethylamine, the time-of-flight mass spectra of triethylamine is obtained. Parent ion and fragment ion reach as much as 29 kinds. Analyzing the abnormal variation of (C₂H₅)₂N⁺ CH₂(86⁺) show that when the signal ions' intensity are very strong, the 25-times instantaneous deceleration effort of 25 kinds of ions before 86⁺ are stronger than 3-times deceleration effort of 3 kinds of ions after 86⁺. (authors)