Acetylene ion (C2H2+) Energy (eV) BEB (A^2) 21.00 0.000 21.50 0.024 22.00 0.048 22.50 0.072 23.00 0.097 23.50 0.121 24.00 0.145 26.00 0.239 28.00 0.360 30.00 0.502 32.00 0.635 34.00 0.757 36.00 0.879 38.00 0.994 40.00 1.098 45.00 1.319 50.00 1.489 55.00 1.618 60.00 1.716 65.00 1.789 70.00 1.843 75.00 1.882 80.00 1.909 85.00 1.927 90.00 1.937 95.00 1.941 100.00 1.940 105.00 1.935 110.00 1.928 115.00 1.918 120.00 1.906 125.00 1.892 130.00 1.877 135.00 1.862 140.00 1.845 145.00 1.828 150.00 1.811 160.00 1.775 170.00 1.739 180.00 1.703 190.00 1.668 200.00 1.633 210.00 1.600 220.00 1.567 230.00 1.535 240.00 1.504 250.00 1.474 300.00 1.340 350.00 1.228 400.00 1.134 450.00 1.054 500.00 0.985 550.00 0.925 600.00 0.872 650.00 0.825 700.00 0.784 750.00 0.746 800.00 0.713 850.00 0.682 900.00 0.654 950.00 0.629 1000.00 0.605 1100.00 0.563 1200.00 0.528 1300.00 0.496 1400.00 0.469 1500.00 0.444 1600.00 0.422 1700.00 0.403 1800.00 0.385 1900.00 0.369 2000.00 0.354 2100.00 0.340 2200.00 0.328 2300.00 0.316 2400.00 0.306 2500.00 0.296 2600.00 0.286 2700.00 0.278 2800.00 0.270 2900.00 0.262 3000.00 0.255 4000.00 0.201 5000.00 0.166