A STUDY OF ELECTRON-CAPTURE AND EXCITATION PROCESSES IN COLLISIONS OFMULTIPLY-CHARGED IONS WITH LITHIUM ATOMS

The atomic-orbital close-coupling method (AO-CC) has been employed in calculations of electron capture and target excitation in collisions o f fully stripped ions A(q+) (q=2-6) with Li(ns, p) atoms (n=2, 3) at l ow and intermediate energies. Total and state selective single electro n capture (SEC) cross sections have been determined. Data for sec into nl sub-levels of the projectile have been used to calculate the relat ed line emission cross sections, which are compared with available exp erimental and theoretical data. In addition cross sections for various target excitation processes, in particular the Li(2s-2p) resonance tr ansition are presented. The scaling properties of the total SEC and ta rget excitation cross sections are investigated, and their implication for lithium beam edge plasma spectroscopy is being discussed. For com pletion, scaling relations for ionization are also given.