Abstract
Abstract Ionization efficiency curves of N,N-dimethylformamide (DMF) ion and of its fragment ions, C3H6NO+, C2H4NO+, and C2H6N+ were obtained by use of vacuum ultraviolet photoionization method. The appearance energy of the parent ion was 9.12±0.06 eV. The appearance energies of C3H6NO+, C2H4NO+, and C2H6N+ were very close (10.77±0.08 eV for C3H6NO+ and C2H4NO+, 10.59±0.08 eV for C2H6N+). The relative intensity curve of C2H6N+ normalized by the sum of fragment ions vs. photon energy has the second rise at 12.2±0.3 eV, which implies that another fragmentation process appears at the photon energy above 12.2 eV. The second fragmentation process is ascribed to a channel through DMF cation in an excited electronic state.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
