Energy (eV),He+ [10-17 cm2],±5%,He++ [10-19 cm2],±7%,,,,,,
22.5,,,,,,,,,,
25,0.037,0.004,,,,,,,,
27.5,0.290,0.020,,,,,,,,
30,0.568,0.040,,,,,,,,
32.5,0.851,0.043,,,,,,,,
35,1.09,0.05,,,,,,,,
40,1.52,0.08,,,,,,,,
45,1.90,0.10,,,,,,,,
50,2.24,0.11,,,,,,,,
55,2.47,0.12,,,,,,,,
60,2.69,0.13,,,,,,,,
70,2.96,0.15,,,,,,,,
80,3.16,0.16,,,,,,,,
90,3.28,0.16,0.042,0.013,,,,,,
100,3.37,0.17,0.143,0.012,,,,,,
110,3.41,0.17,0.249,0.017,,,,,,
120,3.45,0.17,0.399,0.028,,,,,,
130,3.47,0.17,0.527,0.037,,,,,,
140,3.44,0.17,0.608,0.043,,,,,,
150,3.38,0.17,0.735,0.051,,,,,,
160,3.35,0.17,0.818,0.057,,,,,,
170,,,,,,,,,,
180,3.24,0.16,0.980,0.069,,,,,,
190,,,,,,,,,,
200,3.14,0.16,1.08,0.08,,,,,,
225,3.03,0.15,1.17,0.08,,,,,,
250,2.90,0.15,1.23,0.09,,,,,,
275,,,,0.00,,,,,,
300,2.69,0.13,1.31,0.09,,,,,,
350,2.46,0.12,1.27,0.09,,,,,,
400,2.32,0.12,1.21,0.08,,,,,,
500,2.03,0.10,1.06,0.07,,,,,,
600,1.79,0.09,0.916,0.064,,,,,,
700,1.62,0.08,0.821,0.057,,,,,,
800,1.47,0.07,0.736,0.052,,,,,,
900,1.36,0.07,0.649,0.045,,,,,,
1000,1.24,0.06,0.579,0.041,,,,,,