Differential cross sections and orientation propensities for electron capture in 0.75-12 keV B3+-He collisions: experiment and atomic basis theory

Absbact. Charge transfer processes in 0.75-12 keV B'+-He collisions are investigated. Theoretically, a two-electron model incorporating correlation and relaxation effects is invoked. Experimentally, dikential cross sedions and orientation parameters are studied using a position-sensitivedetector and multicoincidence techniques. The B"(2s) state dominates the B"(2p) channel at all scattering angles. A significant orientation of the B'"(2p) state is found. with the transferred electron orbiting in the same sense around the B" core as the direction of rotation of the internuclear axis. Agreement between theory and uoerimen1 is satisfactory at most scattering angles.