Dissociative electron attachment studies of gas-phase acetic acid using a velocity map imaging technique

Abstract

Advancing instrumentation to explore dissociative electron attachment studies allows previously unattainable information to be acquired. Using a newly-constructed velocity map imaging spectrometer, we revisited a study on dissociative electron attachment to gas-phase acetic acid. We discuss possible fragmentation channels and compared the corresponding ion yields with previous high-electron energy resolution results. We focus on the channels occurring at higher energies, particularly near 10 eV, and calculate their thermodynamic thresholds. Moreover, we expand previous studies and perform velocity-slice imaging near the 10 eV resonance to obtain the kinetic energy distribution of the fragment ions.