Abstract

Experimental electron-impact ionization cross sections for thirty-seven target ions are presented, summarizing measurements made at ORNL during the period from 1980 through early 1984. Target ions range in atomic number from Z = 5 (boron) to Z = 73 (tantalum), with charge states ranging from +2 through +6 and energies ranging from below the ionization threshold to 1500 eV in most cases. All data are presented in both tables and graphs. Maxwellian ionization rate coefficients are tabulated over the equivalent temperature range 10 to 3000 eV, and fitting parameters are given to allow the calculation of rates at intermediate electron temperatures or for inclusion in computer programs for plasma modeling.

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