May, Olivier Kubala, D. Allan, Michael 2010-07-26 Absolute partial cross sections for the formation of CN⁻ in dissociative electron attachment to HCN and DCN have been measured using a time-of-flight ion spectrometer combined with a trochoidal electron monochromator to be 940pm² for CN⁻/HCN and 340pm² for CN⁻/DCN at peaks of the bands due to the ²Π-shape resonance. The dissociative electron attachment bands were then recorded under higher resolution, 60 meV, with a trochoidal monochromator plus quadrupole mass filter combination and found to have a nearly vertical onset at the threshold energy and to peak at 1.85 eV. Broad structure was observed on the bands, assigned to formation of vibrationally excited CN⁻, from which the branching ratios could be determined to be 1,0.49, and 0.22 for the formation of CN⁻ in the v=0,1, and 2 states, respectively. The results are compared to the recent multidimensional ab initio calculations of Chourou and Orel [Phys. Rev. A 80, 032709 (2009)]. application/pdf https://folia.unifr.ch/global/documents/301678 https://folia.unifr.ch/documents/301678/files/all_acs.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.82.010701 info:eu-repo/semantics/openAccess License undefined Physical Review A. - 2010, vol. 82, p. 010701 info:eu-repo/classification/udc/54 Absolute cross sections for dissociative electron attachment to HCN and DCN http://purl.org/coar/resource_type/c_6501