Electron capture and loss in collisions of H+ and H with Pb vapors.

Abstract

Cross sections for single and double electron capture by protons and electron capture and loss from hydrogen atom s in lead vapors have been measured in the energy range 7.5-40 keV. Our results on Pb are compared with those on Mg reported by other workers. Analysis of electron capture collisions is complicated by the presence of multiple pseudocrossings of potential energy curves, though it may be infarred that the roll of electron capture from inner shells becomes increasing important at velocities larger than 2x 10 cm/s. The double electron-capture processes are best described assuming the validity of the rule of conservation of electronic spin in the collisions.