Abstract
The ionization threshold of helium has been studied experimentally using the retarding potential difference technique. The cross section for the formation of He+ is nonlinear for at least the first 2 eV above threshold, in agreement with recent results obtained by Brion and Thomas using a 127° electrostatic energy selector.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
