MEASUREMENT OF ELECTRON-CAPTURE AND IONIZATION CROSS-SECTIONS FOR D2 IN COLLISION WITH FAST O-8+ IONS

We have measured cross sections for single capture, transfer ionization, single ionization, double ionization, ionization excitation, and transfer excitation for fully stripped oxygen projectiles at energies between 8 and 20 MeV on D2 molecular targets. Coincidences between charge-analyzed projectiles and recoil D+ and D2+ products were measured. The time of flight (TOF) of the recoil, collected by applying an extraction electric field, was used to separate the D+ from D2+ ions. TOF spectra taken with no field were used to distinguish the D+ ions from different dissociative channels, including the electronically excited 2p u,2s g,2p u channels and the double-ionization channel. The results are compared with two model calculations. © 1990 The American Physical Society.