, Volume 216, Issue 3, pp 241-247

Electron-impact ionization cross-sections and ionization rate coefficients for atoms and ions from hydrogen to calcium

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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.

This work was performed as part of the joint research program of the Institut für Plasmaphysik, Garching, and Euratom.