Electron transfer and ionization in collisions betweenH+,He2+,Li3+,Be4+,B5+,C6+,N7+ions and targetC5+(1s)ions studied using a Sturmian basis

Abstract

Cross sections have been determined for electron transfer and ionization in collisions between ${\mathrm{H}}^{+},$ ${\mathrm{He}}^{2+},$ ${\mathrm{Li}}^{3+},$ ${\mathrm{Be}}^{4+},$ ${\mathrm{B}}^{5+},$ ${\mathrm{C}}^{6+},$ ${\mathrm{N}}^{7+}$ ions and target ${\mathrm{C}}^{5+}(1s)$ ions for projectile energies 125--1000 keV/amu using a coupled-Sturmian-pseudostate approach [Phys. Rev. A 35, 3799 (1987)]. A comparison is made with results using simpler approaches, and rules for scaling with the projectile nuclear charge are considered. Except for ${\mathrm{H}}^{+},$ the results for electron transfer to the ground state are estimated to be converged to 1%; for ionization, the convergence is probably to 10--20 %.