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Search for interference effects in electron impact ionization of aligned hydrogen molecules

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Senftleben,  A.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Pflüger,  T.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Ren,  X.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Najjari,  B.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Dorn,  A.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Ullrich,  J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Citation

Senftleben, A., Pflüger, T., Ren, X., Al-Hagan, O., Najjari, B., Madison, D., et al. (2010). Search for interference effects in electron impact ionization of aligned hydrogen molecules. Journal of Physics B: Atomic, Molecular and Optical Physics, 43(8): 081002, pp. 1-5. doi:10.1088/0953-4075/43/8/081002.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-71A0-B
Abstract
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.