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Issue 8, 2014
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Electron impact induced anion production in acetylene

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Abstract

A detailed experimental investigation of electron induced anion production in acetylene, C2H2, in the energy range between 1 and 90 eV is presented. The anions are formed by two processes in this energy range: dissociative electron attachment (DEA) and dipolar dissociation (DD). DEA in C2H2 is found to lead to the formation of H and C2/C2H through excitation of resonances in the electron energy range 1–15 eV. These anionic fragments are formed with super thermal kinetic energy and reveal no anisotropy in the angular distributions. DD in C2H2 leads to the formation of H, C/CH and C2/C2H with threshold energies of 15.7, 20.0 and 16.5 eV respectively. The measured anion yields have been used to calculate anion production rates for H, C/CH and C2/C2H in Titan's ionosphere.

Graphical abstract: Electron impact induced anion production in acetylene

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Publication details

The article was received on 21 Oct 2013, accepted on 26 Nov 2013 and first published on 27 Nov 2013


Article type: Paper
DOI: 10.1039/C3CP54459A
Phys. Chem. Chem. Phys., 2014,16, 3425-3432

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    Electron impact induced anion production in acetylene

    E. Szymańska, I. Čadež, E. Krishnakumar and N. J. Mason, Phys. Chem. Chem. Phys., 2014, 16, 3425
    DOI: 10.1039/C3CP54459A

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