Measured cross sections for single ionization of Zr3+ by electron impact. Uncertainties are one standard deviation counting statistics only and taken as representative of relative uncertainties. Total uncertainty for a typical point near the peak cross section is ±9% at 90% confidence level. Reference: R. A. Falk et al., Phys. Rev. A 27, 762 (1983).

             Energy         Cross Section
              (eV)           (10-18 cm2)
               34.9          2.51 ± 1.3
               35.3          9.70 ± 3.2
               35.6         12.69 ± 4.2
               36.3         18.60 ± 3.2
               36.5         20.97 ± 3.0
               37.3         29.19 ± 3.1
               37.6         39.76 ± 3.5
               38.5         59.24 ± 3.5
               39.5         79.83 ± 3.8
               40.5         95.58 ± 4.5
               41.5        101.21 ± 2.6
               42.4        106.42 ± 6.2
               43.1        108.31 ± 5.9
               43.4        110.23 ± 6.2
               44.4        123.64 ± 6.4
               45.4        110.57 ± 6.4
               46.4        120.08 ± 4.3
               47.4        116.22 ± 4.8
               48.4        115.03 ± 6.4
               49.4        123.01 ± 6.1
               50.3        140.32 ± 6.1
               51.3        146.02 ± 4.4
               53.4        139.35 ± 4.3
               56.3        143.47 ± 3.1
               58.0        144.93 ± 4.1
               60.0        141.70 ± 5.7
               62.0        152.94 ± 4.8
               64.0        149.29 ± 5.0
               66.1        148.38 ± 2.6
               70.0        140.22 ± 2.2
               70.9        150.82 ± 4.7
               71.9        134.92 ± 1.8
               73.0        153.72 ± 4.8
               73.9        144.39 ± 4.2
               76.0        151.92 ± 4.2
               95.6        142.25 ± 2.5
              120          135.24 ± 3.0
              145          130.36 ± 2.7
              194          114.72 ± 2.1
              293           98.55 ± 0.6
              392           77.55 ± 1.4
              491           76.95 ± 1.8
              591           65.04 ± 2.9
              690           56.23 ± 1.7
              839           48.92 ± 1.9
              988           47.49 ± 1.4

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Last Modified: Friday, January 10, 1997