Measured cross sections for single ionization of Al2+ by electron impact. Uncertainties are one standard deviation from counting statistics and are taken as representative of relative uncertainties. Total uncertainty for a typical point near the peak cross section is ±8% at 90% confidence level. Reference: D. H. Crandall et al., Phys. Rev. A 25, 143 (1982).

             Energy         Cross Section
              (eV)           (10-18 cm2)
               20.9         -0.24 ± 0.91
               24.8          0.40 ± 0.99
               26.5         -0.11 ± 1.00
               28.9          1.15 ± 0.59
               31.0          2.56 ± 0.42
               33.0          2.84 ± 0.43
               35.0          3.72 ± 0.42
               36.6          5.48 ± 0.35
               38.6          5.38 ± 0.46
               40.6          6.93 ± 0.26
               42.6          6.78 ± 0.29
               44.5          7.94 ± 0.35
               46.3          7.93 ± 0.21
               48.5          7.93 ± 0.32
               50.7          8.44 ± 0.23
               52.4          8.68 ± 0.29
               54.4          8.45 ± 0.29
               56.4          8.85 ± 0.22
               58.3          9.05 ± 0.27
               60.3          8.96 ± 0.26
               61.6          9.07 ± 0.23
               64.3          8.84 ± 0.28
               66.1          8.93 ± 0.15
               68.1          9.22 ± 0.20
               70.7          9.09 ± 0.16
               72.0          8.96 ± 0.20
               74.0          9.51 ± 0.15
               75.9          9.78 ± 0.15
               77.9         10.28 ± 0.19
               80.3         10.00 ± 0.25
               82.1         10.16 ± 0.25
               83.5          9.80 ± 0.23
               85.5         10.87 ± 0.23
               87.9         11.19 ± 0.31
               90.1         10.78 ± 0.25
               91.6         10.61 ± 0.37
               95.4         11.32 ± 0.14
               97.6         11.02 ± 0.22
               99.6         10.99 ± 0.21
              101           11.06 ± 0.21
              103           11.72 ± 0.20
              105           11.43 ± 0.17
              107           11.41 ± 0.20
              109           11.44 ± 0.18
              111           11.93 ± 0.17
              114           11.88 ± 0.14
              118           12.47 ± 0.20
              121           12.70 ± 0.20
              125           12.37 ± 0.11
              130           12.65 ± 0.18
              135           12.58 ± 0.14
              145           12.68 ± 0.17
              154           12.82 ± 0.21
              175           13.93 ± 0.13
              194           13.66 ± 0.17
              242           14.07 ± 0.08
              341           13.41 ± 0.15
              492           12.42 ± 0.17
              744           11.29 ± 0.15
              994            9.23 ± 0.26

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Last Modified: Friday, January 10, 1997