Abstract
Summary The electron energies in the positive column of low pressure hot cathode glow discharges have been examined by the magnetic spectrum method. From measurements of the energy distribution of electrons reaching a positive probe a method of finding the space potential is deduced. With this knowledge a comparison is made of the energy distribution of electrons, in the positive colunms of air and argon discharges, determined by the present method and the conventional probe method. Wide discrepancies are observed. The magnetic spectrum indicates a distribution of the Druyvesteyn tbrm whilst that deduced from probes is Maxwellian. The changing form of the distribution reaching negative probes is proof of the failure at these pressures of the assumptions on which Langmuir probe theory is based. Calculations by Boyd on positive ion sheath formation may give some indication of the mechanisms producing the changing distributiom
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science
Disclaimer: 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.