A new apparatus using crossed-beam techniques with a cylindrical electrostatic electron velocity selector for the study of ionization probability curves of gases is described. Results for He⁺ and Ar⁺ in the first eV above the ionization threshold are given. New computer techniques determine structure and near-threshold behavior. A simple power law yields a good representation of the experimental results for each ion state, with a different power in each case. For He a power law with power 1.16 is found. The results for Ar may be represented by two power laws with powers 1.3 and 1.34, respectively, joining at the energy of the ²P1/2 level of Ar⁺.
No takes yet. Share an insight, caveat, or question.
Marchand et al. (1969) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: