Using the empirical formula recently proposed, electron-impact ionization cross-sections for single ionization from the ground state are given for free atoms and for all ionization stages from hydrogen to calcium (Z=20). Ionization rate coefficients are given for these species on the assumption of a Maxwellian distribution of the impacting electrons. Multiple ionization, lowering of ionization potential, or collision limit are not taken into account.
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Similar content being viewed by others Explore related subjectsDiscover the latest articles and news from researchers in related subjects, suggested using machine learning. Author information Authors and AffiliationsInstitut für Plasmaphysik, Garching bei München
Wolfgang Lotz
This work was performed as part of the joint research program of the Institut für Plasmaphysik, Garching, and Euratom.
About this article Cite this articleLotz, W. Electron-impact ionization cross-sections and ionization rate coefficients for atoms and ions from hydrogen to calcium. Z. Physik 216, 241–247 (1968). https://doi.org/10.1007/BF01392963
Received: 15 July 1968
Issue Date: June 1968
DOI: https://doi.org/10.1007/BF01392963
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