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Journal Article

Signatures of projectile–nucleus scattering in three-dimensional (e, 2e) cross sections for argon

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

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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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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

Ren, X. G., Senftleben, A., Pflüger, T., Dorn, A., Bartschat, K., & Ullrich, J. (2010). Signatures of projectile–nucleus scattering in three-dimensional (e, 2e) cross sections for argon. Journal of Physics B: Atomic, Molecular and Optical Physics, 43: 035202. doi:10.1088/0953-4075/43/3/035202.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-728E-4
Abstract
Electron impact ionization (E0 = 195 eV) of the 3p-orbital in argon is investigated experimentally and theoretically. The triple-differential cross sections (TDCS) obtained using a multi-particle momentum spectrometer (reaction microscope) cover more than 80% of the full solid angle for the slow emitted electron up to an energy of 25 eV and a range of projectile scattering angles from −5◦ to −15◦. Inside the projectile scattering plane the TDCS shape is in rather good agreement with a hybrid distorted-wave plus R-matrix (DWBA-RM) calculation. Outside the scattering plane relatively strong electron emission is observed which is reproduced by theory in magnitude but not in shape. A systematic study of the TDCS behaviour and structure in this region indicates that its origin lies in high-order projectile−target interaction.