ELECTRON-CAPTURE BY O-8+ FROM ALIGNED MOLECULAR DEUTERIUM

Velocity space distributions of deuterons from electron capture and ionization by 10 MeV oxygen ions in collision with molecular deuterium targets were measured. The experiment was performed by applying an extraction electric field perpendicular to the beam axis to project the whole velocity distribution of the recoil ions onto a two-dimensional position sensitive detector. By additional measurement of the time-of-flight of these recoil ions, we are able to reconstruct the three-dimensional velocity distribution. From the reconstructed results, the dependence of the cross sections on the alignment of the molecular axis with respect to the beam axis was determined.