K+ charge transfer in H2 at low keV collisions

Abstract

Absolute electron capture cross sections for the K+–H2 pair, employing beam collision spectroscopy for 0.4–4 keV energy were measured. The capture cross section increased with the increase in collision energy. The results below 2 keV overlap with previously measured data of other investigators and extend down in energy to 400 eV, where no previous data have been reported. Experimental data were compared with calculations employing the Olson model, which were found to agree in behavior as well as with an absolute value above 100 keV.