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High l-state population in O 7+ produced in ion—solid collisions
Ist Teil von
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 1992, Vol.67 (1), p.168-171
Ort / Verlag
Elsevier B.V
Erscheinungsjahr
1992
Link zum Volltext
Quelle
Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)
Beschreibungen/Notizen
The high
l-state population of fast ions excited in ion—solid interactions is very different from
l-state populations produced under single collision conditions. A study of the population dynamics of electronic excitation and transport within the framework of a classical transport theory for O
2+ (2 MeV/u) ions traversing carbon foils shows goof agreement with the experimental results from delayed photon emission spectroscopy. We investigate the dependence of the characteristics exponent for the power-law decay of delayed Ly
α and Ly
β radiation on the initial (
n,
l) distribution. From our simulations we find evidence that the very high
l-state populations produced in ion—solid collisions are the consequence of a high
l-state diffusion under the influence of multiple inelastic and elastic collisions in the bulk of the solid.