This work was supported by the Division of Chemical Sciences, Office of Energy Research, US Department of Energy.
Journal of Physics B: Atomic, Molecular and Optical Physics
Letter to the Editor
Helium -- Ionization, Ionization of gases, Electrons -- Capture
The ratio of total double to total single ionisation cross sections, R, by high velocity projectiles containing electrons is examined in the first Born approximation. For ionisation of helium by H+, H0 and He0 impact, it is found that t filt H+ < filt Ho < filt Heo . Connection with Bohr's free-collision model for collisions with projectile electrons is given.
Wang, Y. D., Straton, J. C., McGuire, J. H., & DuBois, R. D. (1990). High-velocity limits for the ratio of double to single ionisation of helium by projectiles with electrons. Journal of Physics B: Atomic, Molecular and Optical Physics, 23(9), L133.