Electron capture by slow multicharged ions in atomic and molecular hydrogen

TLDR: Measured cross sections for electron capture by a variety of multiply charged ions in collisions with atomic and molecular hydrogen are presented in this article, where the data are primarily for He-like and Li-like ions of B, C, N, and O in the velocity range 0.4-1.8 cm/sec.

Abstract: Measured cross sections for electron capture by a variety of multiply charged ions in collisions with atomic and molecular hydrogen are presented. The data are primarily for He-like and Li-like ions of B, C, N, and O in the velocity range 0.4-1.0 \ifmmode\times\else\texttimes\fi{} ${10}^{8}$ cm/sec. The electron-capture cross sections for these ions are typically 3 \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}15}$ ${\mathrm{cm}}^{2}$ in the velocity range tested. Comparison is made between these data and a number of recent theoretical predictions. While no simple scaling rules apply to these low-velocity data, for initial charge $q\ensuremath{\ge}+4$ the cross sections are essentially characterized by initial ionic charge rather than by projectile mass or electronic structure.