The fragmentation of 1-propanol resulting from dissociative electron attachment has been explored across an energy range of 3.5–16 eV. Four distinct ion species are identified: H−, O−, OH−, and C3H7O−. The OH− ion exhibited a prominent peak near 8.7 eV, along with a small hump near 5.6 eV. Complementary channels led to the formation of the H− and C3H7O− ions. Both of these two ions exhibit a sharp peak near 6 eV and broad overlapping resonances between 7 and 12 eV. The observed ion yields of distinct dissociation fragments in this study, when compared with those from previously studied alcohols, suggest site-specific fragmentation of alcohols during dissociative electron attachment. To gain a deeper understanding of the dissociation pathways, density functional theory calculations were conducted, revealing the threshold energies for each channel. These threshold energies aligned well with the experimental uncertainties.
Ghosh et al. (Mon,) studied this question.