Abstract

AbstractResonance dissociative electron attachment and ion pair formation following electron impact have been studied in the energy range from 0 – 20 eV. The translational excess energies of the negative ion fragments have been determined using a time‐of‐flight technique in combination with mass analysis in a quadrupole mass filter. Compared with other halogenated methanes, the resonances in CHF3, CH2F2, and CH3F leading to negative fragments appear at considerable higher energies. The experimental results indicate that those resonances are associated with multiple fragmentation reactions.

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