We have studied electron impact ionization of H2 and N2 molecules at intermediate energies to look for possible two center interference effects experimentally and theoretically. Here we report a study of the interference factor I for 250 eV electron-impact ionization. The experimental measurements are performed using a crossed-beam-type electron-electron coincidence spectrometer and theoretical calculations are obtained using the Molecular Three Body Distorted Wave Approximation (M3DW). We found that the I-factor demonstrated strong evidence for two-center interference effects for both H2 and N2. We also found that the I-factor is more sensitive to projectile angular scans than to ejected electron energy scans which indicate that for the present set of kinematics the diffraction of the projectile from two scattering centers is more important than interference between electron waves emitted from two different centers.
Z. N. Ozer et al., "Interference Effects for Intermediate Energy Electron-Impact Ionization of H₂ and N₂ Molecules," Journal of Physics: Conference Series, vol. 601, no. 1, Institute of Physics - IOP Publishing, Jul 2015.
The definitive version is available at https://doi.org/10.1088/1742-6596/601/1/012003
International Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (2014: Jul. 15-18, Metz, France)
Center for High Performance Computing Research
Keywords and Phrases
Electron Energy Levels; Electron Scattering; Electrons; Ionization; Molecules; Particle Spectrometers; Projectiles; Spectrometers; Distorted Wave Approximations; Electron Impact-Ionization; Electron-Electron Coincidences; Interference Effects; Intermediate Energies; Intermediate-Energy Electrons; Theoretical Calculations; Two-Center Interference; Impact Ionization
International Standard Serial Number (ISSN)
Article - Conference proceedings
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01 Jul 2015