Experimental electron-impact cross sections for single ionization of Ar3+. Uncertainties are one standard deviation from counting statistics only. Total uncertainty for a typical point near the peak cross section is ±8% at 90% confidence level. Reference: D. C. Gregory et al., Phys. Rev. A 27, 724 (1983).

             Energy         Cross Section
              (eV)           (10-18 cm2)
               52.3         -0.09 ± 0.11
               54.4          0.35 ± 0.16
               57.0          1.09 ± 0.17
               59.0          2.66 ± 0.16
               60.8          4.50 ± 0.17
               63.1          6.57 ± 0.16
               64.9          7.76 ± 0.16
               66.9          9.59 ± 0.17
               68.9         10.32 ± 0.14
               70.8         11.40 ± 0.16
               72.9         11.88 ± 0.32
               74.3         12.32 ± 0.17
               76.2         12.98 ± 0.17
               81.8         14.28 ± 0.16
               86.2         15.40 ± 0.17
               91.0         15.92 ± 0.17
               96.5         16.73 ± 0.08
              105.9         17.49 ± 0.36
              120.3         17.94 ± 0.19
              130.7         18.02 ± 0.13
              145.2         17.94 ± 0.16
              170.0         17.36 ± 0.13
              194.4         17.40 ± 0.12
              219.0         17.28 ± 0.08
              243.8         17.33 ± 0.09
              268.4         16.64 ± 0.08
              293.2         15.90 ± 0.08
              342.7         14.51 ± 0.07
              391.8         13.24 ± 0.05
              441.7         12.27 ± 0.17
              491.1         11.55 ± 0.04
              540.8         11.07 ± 0.04
              590.4         10.49 ± 0.04
              640.8          9.68 ± 0.05
              690.2          9.05 ± 0.02
              789.6          8.62 ± 0.03
              888.0          8.10 ± 0.03
              986.8          7.58 ± 0.01
             1481            5.40 ± 0.01

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Last Modified: Friday, January 10, 1997