Cc. Tian et Cr. Vidal, ELECTRON-IMPACT DISSOCIATIVE IONIZATION AND THE SUBSEQUENT ION-MOLECULE REACTIONS IN A METHANE BEAM, Chemical physics, 222(1), 1997, pp. 105-112
The cross-sections of the electron impact dissociative ionization of m
ethane have been measured for electron energies from threshold to 100
eV. For CH4+ the results agree with the existing measurements. For the
fragments of CH3+, CH2+, CH+, and C+, our results overlap with the pr
evious results within their reported error limits. These earlier measu
rements exceed their given error limits and hence are inconsistent. At
higher backing pressures the subsequent ion-molecule reactions and th
eir product ions have been measured. (C) 1997 Elsevier Science B.V.