Dissociative electron attachment to formic acid

Dissociative electron attachment to formic acid (HCOOH) is studied in a crossed beams experiment using mass spectrometric detection of the product ions in the electron energy range 0–15 eV, including the measurement of absolute cross-sections. Unlike the previous reports, we observe the formation of H− from this molecule, in addition to the fragment negative ions namely O−/OH− and HCOO−, which were observed earlier. The absolute cross-sections indicate that H− formation is one of the important DEA channels in this molecule.