Abstract
Autoionisation processes have been investigated in Ar+ + Ar and O+ + Ar collision system using the method of zero-degree spectroscopy. All the spectra were dominated by the ELC cusp, with autoionisation peaks appearing symmetrically on both sides of the wings. The energy of the autoionisation electrons were found to be as low as 8 meV with respect to the parent ion, and the analysis indicated that simultaneous electron transfer and core rearrangement, creating a 3p5(2P½) autoionisation state, is the responsible mechanism in Ar+ + Ar collision. For O+ + Ar, two possibilities : core excitation with core rearrangement creating a 2p2(1D2) autoionisation state, and double core excitation to 3pnl, could explain our data.
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© 1988 Springer-Verlag
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Atan, H., Steckelmacher, W., Lucas, M.W. (1988). Collision induced autoionisation of 2.0 – 2.4 MeV Ar+ and O+ ions. In: Berényi, D., Hock, G. (eds) High-Energy Ion-Atom Collisions. Lecture Notes in Physics, vol 294. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-18732-4_123
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DOI: https://doi.org/10.1007/3-540-18732-4_123
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