Influence of the Post-Collision Interaction on Interference Effects in Ionization of H₂ by Proton Impact
We have performed a kinematically complete experiment on ionization of H2 by 75 keV proton impact leading to electrons with a speed equal to the projectile speed. By comparing cross sections measured with a coherent and an incoherent projectile beam we were able to perform a detailed analysis of interference effects. We found that the interference structure is significantly more damped than for a smaller electron energy studied previously. This damping is further increased if kinematic conditions are selected which favor a strong role of the post-collisional interaction between the scattered projectile and the electron ejected to the continuum by a preceding primary interaction with the projectile.
T. P. Arthanayaka et al., "Influence of the Post-Collision Interaction on Interference Effects in Ionization of H₂ by Proton Impact," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 48, no. 17, pp. 1 - 7, Institute of Physics - IOP Publishing, Jul 2015.
The definitive version is available at https://doi.org/10.1088/0953-4075/48/17/175204
Keywords and Phrases
Coherent light; Electron energy levels; Ionization of gases; Projectiles; Wave interference; Complete experiment; Electron energies; Interference effects; Interference structures; Kinematic condition; Molecular targets; Post collision interaction; Post collisional interactions; Ionization
International Standard Serial Number (ISSN)
Article - Journal
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01 Jul 2015