Search for Interference Effects in Electron Impact Ionization of Aligned Hydrogen Molecules
Five-fold differential cross sections (5DCS) for electron impact ionization of a diatomic molecule have been explored experimentally as a function of molecular alignment. Using H2 as a test system, we exploited dissociative ionization by 200eV electrons to obtain the alignment of the internuclear axis. Separation of ground-state ionization from autoionization is discussed. 5DCS are investigated for the direct channel and found to be in good agreement with M3DW calculations discarding at the same time a simple two-centre interference model discussed recently in the literature.
A. Senftleben et al., "Search for Interference Effects in Electron Impact Ionization of Aligned Hydrogen Molecules," Journal of Physics B: Atomic, Molecular and Optical Physics, Institute of Physics - IOP Publishing, Apr 2010.
The definitive version is available at http://dx.doi.org/10.1088/0953-4075/43/8/081002
DFG Center for Functional Nanostructures Karlsruhe
National Science Foundation (U.S.)
Saudi Ministry of Higher Education's King Abdullah Bin Abdul-Aziz Scholarship
Keywords and Phrases
Autoionization; Differential Cross Section; Direct Channel; Dissociative Ionization; Distributed Parameter Networks; Hydrogen Molecule; Internuclear Axis; Molecular Alignment; Particle Detectors; Diatomic molecules; Electron impact ionization; Photodissociation
Article - Journal
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