descriptionPublicationkeyboard_double_arrow_right Article 05 Apr 1946 English Publisher:The Royal SocietyJournal:Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, volume 185, pages 381-398 (issn: 0080-4630, eissn: 2053-9169,

Authors: F, HORTON; D M, MILLEST;

doi: 10.1098/rspa.1946.0026

pmid: 21024933

The ionization of helium by neutral helium atoms

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Abstract

A method is described for investigating the ionization produced in helium by collisions between quasi-stationary atoms—that is, atoms possessing only therm al velocities—and a beam of neutral helium atoms with kinetic energy less than 100 eV. Ionization is shown to begin when the kinetic energy of the bombarding atoms is twice as great as the minimum kinetic energy which electrons m ust possess in order to ionize helium.

Keywords

Isotopes, Hydrogen-Ion Concentration, Helium

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