Dissociative electron attachment to 2,4,6-TCA and 2,4,6-TBA molecules

2,4,6-trichloroanisole and 2,4,6-tribromoanisole were investigated by means of Electron Transmission Spectroscopy and two different types of Dissociative Electron Attachment spectrometers, see Fig. 1. The dominant dissociative decay channels of the temporary molecular negative ions lead to formation of Clˉ and Brˉ in the low electron energy region. Formation of long-lived parent anions is observed at thermal electron energies. Their relative intensity depends on the experimental time window, ~36 s in the case of the static magnet mass analyzer and ~200 s for the quadrupole mass analyzer employed.