Abstract
In order to study the charge transfer processes between highly charged ions and atoms or molecules in the collisional energy range of below 100eV/q, an experimental setup for the state selective differential cross section measurement of multi-electron capture processes was prepared. The apparatus is set at the 30° beam line of the RIKEN 14.5 GHz Caprice ECR ion source. Highly charged ions extracted from the ion source at 2keV/q into the beam line, are decelerated down to 10–100 eV/q and then energy selected by a double hemispherical analyzer. A typical current of 300 pA was achieved for the energy selected 40 eV/q Ar6+ beam with an energy width of 0.3 eV/q. The energy distribution of scattered ions for 36.6 eV/q (7.3 eV/u) Ar8+-N2 collisions at scattering angles from 0° to 10° has been measured.
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