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Three-dimensional images for electron-impact single ionization of He: Complete and comprehensive (e,2e) benchmark data

MPS-Authors
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Dürr,  M.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Dimopoulou,  C.
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

Dürr, M., Dimopoulou, C., Najjari, B., Dorn, A., & Ullrich, J. (2006). Three-dimensional images for electron-impact single ionization of He: Complete and comprehensive (e,2e) benchmark data. Physical Review Letters, 96(24): 243202, pp. 1-4. doi:10.1103/PhysRevLett.96.243202.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-7FD1-D
Abstract
Comprehensive fully differential cross sections for electron emission into all three spatial dimensions are presented for 1 keV and 102 eV electron-impact single ionization of helium using an advanced reaction microscope. Surprising out-of-plane contributions, traced back to an interference term in a perturbation expansion by comparison with ion-impact data, severely challenge theoretical models that accurately predict coplanar emission. The data represent the ultimate benchmark for recently developed exact theoretical descriptions of the most fundamental three-body quantum problems.