Cross sections for the ionization of N
2, CO and O
2 diatomic molecules by electron impact are calculated. The applied distorted wave model is based on our previous studies for
positron impact, the molecular orbitals being described by Gaussian wavefunctions. Our study emphasizes the importance of
electron exchange and of using correct distorted waves for the ejected electron.
PACS. 34.80.Gs Molecular excitation and ionization by electron impact