Single and double electron capture by fast Xe54+ from Kr and Xe

Synopsis Decay X-ray spectrum of the scattered ions in 52-197 MeV u Xe54+ collision with Kr and Xe atoms are measured. The transitions form the single capture ion Xe53+* and from the double capture ion Xe52+* are observed, both in a single collision. The single capture is the dominate channel at high energies while the double capture becomes dominate at lower energies.