Experimental electron-impact cross sections for single ionization of Ar4+. Uncertainties are one standard deviation from counting statistics only. Total uncertainty for a typical point near the peak cross section is ±10% at 90% confidence level. Reference: D. H. Crandall et al., unpublished (1978).

             Energy         Cross Section
              (eV)           (10-18 cm2)
               72.0          0.04 ± 0.36
               75.8          1.09 ± 0.36
               80.3          3.21 ± 0.35
               86.3          4.20 ± 0.31
               93.8          6.08 ± 0.35
               113           8.20 ± 0.28
               137           8.92 ± 0.30
               161           9.17 ± 0.20
               188           9.30 ± 0.13
               223           9.45 ± 0.12
               279          10.28 ± 0.13
               326          10.20 ± 0.21
               375           9.50 ± 0.15
               469           8.35 ± 0.18
               563           7.96 ± 0.18
               653           7.48 ± 0.18
               758           6.88 ± 0.17
               853           6.42 ± 0.18
               975           5.88 ± 0.18
              1140           5.35 ± 0.18
              1238           5.04 ± 0.18
              1430           4.44 ± 0.18

Return to Cross Section IndexReturn to IntroductionReturn to MIRF HomepageReturn to CFADC Homepage

Last Modified: Friday, January 10, 1997