Measurement of Relative Population between B2+(2s) and B2+(2p) in Electron Capture Collision of B3+ with He

One-electron capture processes into B 2+ (2s) and B 2+ (2p) have been investigated in B 3+ –He collision at low velocities (1.3-2.3×10 7 cm/sec) using a translation energy spectroscopy. Energy dependence of the relative population between B 2+ (2s) and B 2+ (2p) is obtained and compared with the theoretical result of Shipsey et al.