High Resolution X-ray Spectroscopy of Charge Exchange Collisions of Astrophysical Interest

POSTER

Abstract

Soft X-ray emission following charge exchange (CX) by fully stripped and hydrogen-like ions of carbon, nitrogen, and oxygen on H, H$_{2}$ and He were measured in a collision energy range of 0.5 keV/u -- 30.0 keV/u. CX experiments were performed using the ORNL Multicharged Ion Research Facility ion-atom merged-beams apparatus with a high resolution X-ray quantum calorimeter (XQC) from the University of Wisconsin. First recorded X-ray spectra were made with He and H$_{2}$ gases introduced into the beam line and with ion beams decelerated from a high voltage platform to simulate a range of solar wind ion velocities. Current results are compared with the previous experimental and theoretical studies, and presented along with the status of CX measurements with atomic hydrogen using a merged-beams technique.

Authors

  • I.N. Draganic

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

  • C.C. Havener

    Physics Division, Oak Ridge National Laboratory, Oak Ridge TN 37831, USA, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6372, Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

  • C.R. Vane

    Oak Ridge National Laboratory, Oak Ridge, TN 37831-6372, Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

  • X. Defay

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

  • K. Morgan

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

  • D. McCammon

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

  • M. Fogle

    Auburn University, Department of Physics, Auburn University, Auburn, AL 36849, USA