Abstract
Measurements and techniques are described which lead to charge transfer collision studies of low energy multi-charged recoil ions with target gas atoms and molecules. The recoil neon ions are produced by impact ionization of neon atoms using 1 MeV amu-1 Cl+5 projectile ions stripped to a mean charge state near 10e. The recoils with e ⩽ q ⩽ 7e are confined by the electric and magnetic fields of a Penning ion trap. The number and mass-to-charge ratio of the stored ions is determined by resonant axial excitation and cyclotron resonance. Mean storage time constants > 100 ms limited by charge transfer are observed at pressures in the 10-8 torr range. Estimates of mean stored ion energy are made by examining the ion number stored as a function of axial well depth. Preliminary charge transfer reaction rate constant results are presented. Possibilities for precision spectroscopy on multi-charged stored recoil ions are also discussed.
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