A nonperturbative close-coupling technique is used to calculate differential cross sections for the electron-impact ionization of H2 at an energy of 35.4 eV. Our approach allows cross sections for any orientation of the molecule with respect to the incident electron beam to be analyzed. New features in the resulting cross sections are found compared with the case where the molecular orientation is averaged, and also with cross sections for He at equivalent electron kinematics. When averaged over all possible molecular orientations, good agreement is found with recent experimental results.
J. Colgan et al., "Differential Cross Sections for the Ionization of Oriented H2 Molecules by Electron Impact," Physical Review Letters, vol. 101, no. 23, pp. 233201-1-233201-4, American Physical Society (APS), Dec 2008.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevLett.101.233201
Keywords and Phrases
Electron beams; Electrons; Helium; Ionization; Molecular orientation; Coupling techniques; Cross sections; Differential cross sections; Electron impacts; H2 molecules; Incident electron beams; Nonperturbative; Impact ionization
International Standard Serial Number (ISSN)
Article - Journal
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