Velocity dependence of neutralisation cross sections in collisions of ground state K+, Rb+, Sr+and metastable Sr+(4d) ions with Na atoms

Abstract
Charge exchange cross sections for collisions of fast K+, Rb+ and Sr+ ions with an Na vapour were measured for collision energies ranging from 5 to 30 keV. Sr+(5s) and Sr+(4d) ions providing the first state-dependent data in this mass region. The results are compared with theoretical near-resonance predictions. The application to collinear laser spectroscopy using state-selective neutralisation is discussed.