A classical calculation of e-H collisions ionization threshold law

The Threshold Law for Single Ionization of Atoms or Ions by Electrons

1953 • 1,170 citations

Ionization of atomic hydrogen by electron impact

1965 • 245 citations

WKB approximation and threshold law for electron-atom ionization

1971 • 242 citations

Classical cross sections for ionization of hydrogen atoms by electrons

1966 • 66 citations