Schmelmer, Oliver; Dollinger, Günther; Frey, C. M.; Bergmaier, Andreas; Karsch, Stefan
Document type:
Zeitschriftenartikel / Journal Article
Title:
Excited state population effect of 60 MeV 58Ni18+ ions penetrating thin carbon foils
Journal:
Nuclear Instruments and Methods in Physics Research Section B
Volume:
142
Issue:
1-2
Year:
1998
Pages from - to:
210-213
Language:
Englisch
Keywords:
Carbon ; Electric charge ; Electric charge measurement ; Electron energy levels ; Electrons ; Nickel ; Spectrographs, Charge distribution ; Charge fraction ; Electron capture ; Excited state population effect ; Magnetic spectrograph ; Thin carbon foil, Ions
Abstract:
Measurements of the charge fractions F(q) of 60 MeV 58Ni18+ traversing thin carbon foils in dependence on their thickness show a non-trivial behavior. Particularly, the charge fraction of the analysed charge state 18+ has a minimum for foil thickness below 1.9 μg/cm2. This behavior can be interpreted by fast electron capture into high shells and a slow depopulation and excitation of innershells.