Post-collision interaction in inner-shell ionisation of ArL
3 by electron impact |
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Authors: | R Huster W Mehlhorn |
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Institution: | 1. Fakult?t für Physik der Universit?t, Freiburg, Federal Republic of Germany
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Abstract: | The shifts and shapes of ArL 3 Auger lines due to the post-collision interaction (PCI) in the inner-shell ionisation of theL 3-shell of argon by electron impact have been measured for the range of excess energiesE 1=10 to 1,500 eV. The experimental shifts {ie67-01} could be fitted by a relation {ie67-02} withc=(5.3±0.4) andn= (?0.45±0.04) whereГ(ArL 3)=130 meV is the ArL 3-level width. In a classical model the PCI shifts have been calculated for two limiting cases:a) whereE 1 is large enough (E 1>50 eV) for the motion of the two slow electrons to be treated as uncorrelated, andb) forE 1→0. The calculated shifts forE 1=250, 750 and 1,750 eV are in good agreement with the experimental results. Also the calculated PCI distorted shapes of Auger lines for differentE 1 agree reasonably with the experimental Auger line shapes. |
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