Dissociative electron attachment and dipolar dissociation in ethylene.

Highlights: [•] In DEA and as well in DD to ethylene H−, C−, CH−, CH2 −, C2 −, C2H−, C2H2 − and C2H3 − anions are observed. [•] Newly observed anions for ethylene are: C− and C2H2 −. [•] The present calculations of thermochemical thresholds indicate that for several resonances formation of stable neutral molecules from released fragments occurs which lowers the threshold of the DEA reaction. [Copyright &y& Elsevier]