Absolute Merged Beams Charge Exchange Cross Sections for H- like and Fully Striped Ions on Atomic Hydrogen

ORAL

Abstract

Absolute total cross sections for single electron capture by hydrogen-like ions of carbon, nitrogen, oxygen and fully-stripped oxygen ions from atomic hydrogen are being measured in the relative collision energy range of 0.01-20 keV/amu. Measurements are performed using a merged-beams technique with intensive highly charged ion beams extracted from an all-permanent-magnet ECR ion source on a 250 kV platform. At the higher energies the measurements are in good agreement with previous H-oven measurements (Meyer et al. PRA 32, 3310(1985)) but unexpectedly decrease toward lower energies. The experimental results will be discussed and compared with different theoretical calculations.

*Research supported by the NASA Solar \& Heliospheric Physics Program NNH07ZDA001N, and the U.S Department of Energy Office of Fusion Energy Sciences and the Office of Basic Energy Sciences under contract No. DE-AC05-00OR22725 with UT-Battelle, LLC.

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Authors

  • I.N. Draganic

    • Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

  • D. McCammon

    • Department of Physics, University of Wisconsin, Madison, WI 53706, USA

  • P.C. Stancil

    • University of Georgia
    • University of Georgia, Athens
    • Department of Physics and Astronomy, Univesity of Georgia, Athenas, Ga 30602, USA

  • C.C. Havener

    • Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA