Charge Transfer for Protons inH2

Abstract

A precise measurement of the electron capture cross section for protons in ${\mathrm{H}}_2$ is reported for proton energies between 2.4 and 60 kev. The method involves collection of the residual ions by a sequence of identical condensers. The same scattering chamber is also used for the measurement of ${\sigma }_{01}$ and (${\sigma }_{01}+{\sigma }_{10}$). The recent measurements of Stier and Barnett are in close agreement with our results.