Amptek detectors with C1 and C2 windows for 500 micron active depth Efficiency versus energy for 2 windows "For each window, the first column is total attenuation, the second is the photofraction" Data computed using NIST attenutation values (physics.nist.gov) and nominal device specifications "For more information, visit www.amptek.com" Window C1 C2 Detector 500 microns Si 500 microns Si Energy Total Atten P.E. Atten Total Atten P.E. Atten keV 1.44E-01 9.38E-08 9.38E-08 3.47E-03 3.47E-03 1.46E-01 1.16E-07 1.16E-07 3.71E-03 3.71E-03 1.48E-01 1.62E-07 1.62E-07 4.11E-03 4.11E-03 1.49E-01 1.77E-07 1.77E-07 4.22E-03 4.22E-03 1.49E-01 1.01E-07 1.01E-07 2.82E-03 2.82E-03 1.52E-01 1.42E-07 1.42E-07 3.13E-03 3.13E-03 1.54E-01 2.07E-07 2.07E-07 3.54E-03 3.54E-03 1.65E-01 9.34E-07 9.34E-07 5.79E-03 5.79E-03 1.76E-01 4.07E-06 4.07E-06 9.50E-03 9.50E-03 1.88E-01 1.65E-05 1.65E-05 1.54E-02 1.54E-02 2.01E-01 6.07E-05 6.07E-05 2.43E-02 2.43E-02 2.15E-01 2.00E-04 2.00E-04 3.72E-02 3.72E-02 2.30E-01 5.89E-04 5.89E-04 5.50E-02 5.50E-02 2.46E-01 1.54E-03 1.54E-03 7.81E-02 7.81E-02 2.63E-01 3.62E-03 3.62E-03 1.07E-01 1.07E-01 2.81E-01 7.66E-03 7.66E-03 1.41E-01 1.41E-01 3.01E-01 1.48E-02 1.48E-02 1.80E-01 1.80E-01 3.21E-01 2.61E-02 2.61E-02 2.22E-01 2.22E-01 3.43E-01 4.29E-02 4.29E-02 2.68E-01 2.68E-01 3.67E-01 6.59E-02 6.59E-02 3.14E-01 3.14E-01 3.92E-01 9.54E-02 9.54E-02 3.61E-01 3.61E-01 3.94E-01 9.67E-02 9.67E-02 3.63E-01 3.63E-01 4.00E-01 1.04E-01 1.04E-01 3.73E-01 3.73E-01 4.01E-01 1.06E-01 1.06E-01 3.75E-01 3.75E-01 4.04E-01 5.63E-02 5.63E-02 3.14E-01 3.14E-01 4.10E-01 6.17E-02 6.17E-02 3.25E-01 3.25E-01 4.20E-01 7.16E-02 7.16E-02 3.42E-01 3.42E-01 4.48E-01 1.02E-01 1.02E-01 3.88E-01 3.88E-01 4.79E-01 1.38E-01 1.38E-01 4.33E-01 4.33E-01 5.12E-01 1.80E-01 1.80E-01 4.76E-01 4.76E-01 5.48E-01 2.26E-01 2.26E-01 5.16E-01 5.16E-01 5.86E-01 2.75E-01 2.75E-01 5.52E-01 5.52E-01 6.26E-01 3.25E-01 3.25E-01 5.86E-01 5.86E-01 6.69E-01 3.75E-01 3.75E-01 6.16E-01 6.16E-01 7.15E-01 4.24E-01 4.24E-01 6.43E-01 6.43E-01 7.65E-01 4.70E-01 4.70E-01 6.67E-01 6.67E-01 8.18E-01 5.14E-01 5.14E-01 6.88E-01 6.88E-01 8.74E-01 5.56E-01 5.56E-01 7.06E-01 7.06E-01 9.34E-01 5.96E-01 5.96E-01 7.23E-01 7.23E-01 9.99E-01 6.34E-01 6.34E-01 7.38E-01 7.38E-01 1.07E+00 6.72E-01 6.72E-01 7.53E-01 7.53E-01 1.14E+00 7.08E-01 7.08E-01 7.67E-01 7.67E-01 1.22E+00 7.41E-01 7.41E-01 7.83E-01 7.83E-01 1.30E+00 7.72E-01 7.72E-01 7.98E-01 7.98E-01 1.39E+00 8.00E-01 8.00E-01 8.14E-01 8.14E-01 1.49E+00 8.26E-01 8.26E-01 8.31E-01 8.31E-01 1.59E+00 8.47E-01 8.47E-01 8.47E-01 8.47E-01 1.55E+00 8.48E-01 8.48E-01 8.47E-01 8.47E-01 1.56E+00 8.48E-01 8.48E-01 8.47E-01 8.47E-01 1.57E+00 6.09E-01 6.09E-01 8.17E-01 8.17E-01 1.59E+00 6.13E-01 6.13E-01 8.18E-01 8.18E-01 1.59E+00 6.14E-01 6.14E-01 8.18E-01 8.18E-01 1.70E+00 6.53E-01 6.53E-01 8.37E-01 8.37E-01 1.80E+00 6.90E-01 6.90E-01 8.53E-01 8.53E-01 1.82E+00 6.97E-01 6.97E-01 8.56E-01 8.56E-01 1.83E+00 7.00E-01 7.00E-01 8.57E-01 8.57E-01 1.84E+00 7.02E-01 7.02E-01 8.58E-01 8.58E-01 1.85E+00 4.94E-01 4.94E-01 6.77E-01 6.77E-01 1.88E+00 5.03E-01 5.03E-01 6.81E-01 6.81E-01 1.95E+00 5.25E-01 5.25E-01 6.90E-01 6.90E-01 2.08E+00 5.65E-01 5.65E-01 7.07E-01 7.07E-01 2.22E+00 6.02E-01 6.02E-01 7.23E-01 7.23E-01 2.38E+00 6.38E-01 6.38E-01 7.38E-01 7.38E-01 2.54E+00 6.71E-01 6.71E-01 7.50E-01 7.50E-01 2.72E+00 7.03E-01 7.03E-01 7.63E-01 7.63E-01 2.90E+00 7.32E-01 7.32E-01 7.75E-01 7.75E-01 3.11E+00 7.61E-01 7.61E-01 7.88E-01 7.88E-01 3.32E+00 7.89E-01 7.89E-01 8.02E-01 8.02E-01 3.55E+00 8.15E-01 8.15E-01 8.16E-01 8.16E-01 3.79E+00 8.39E-01 8.39E-01 8.32E-01 8.32E-01 4.06E+00 8.61E-01 8.61E-01 8.48E-01 8.48E-01 4.33E+00 8.80E-01 8.80E-01 8.64E-01 8.64E-01 4.63E+00 8.98E-01 8.98E-01 8.80E-01 8.80E-01 4.95E+00 9.13E-01 9.13E-01 8.95E-01 8.95E-01 5.30E+00 9.26E-01 9.26E-01 9.08E-01 9.08E-01 5.66E+00 9.38E-01 9.38E-01 9.21E-01 9.21E-01 6.05E+00 9.48E-01 9.48E-01 9.32E-01 9.32E-01 6.47E+00 9.56E-01 9.56E-01 9.42E-01 9.42E-01 6.92E+00 9.63E-01 9.63E-01 9.51E-01 9.51E-01 7.39E+00 9.69E-01 9.69E-01 9.58E-01 9.58E-01 7.90E+00 9.74E-01 9.74E-01 9.64E-01 9.64E-01 8.45E+00 9.77E-01 9.77E-01 9.69E-01 9.69E-01 9.03E+00 9.77E-01 9.76E-01 9.70E-01 9.69E-01 9.65E+00 9.71E-01 9.70E-01 9.66E-01 9.65E-01 1.03E+01 9.58E-01 9.55E-01 9.53E-01 9.51E-01 1.10E+01 9.33E-01 9.29E-01 9.30E-01 9.25E-01 1.18E+01 8.97E-01 8.90E-01 8.94E-01 8.87E-01 1.26E+01 8.48E-01 8.38E-01 8.46E-01 8.36E-01 1.35E+01 7.90E-01 7.76E-01 7.88E-01 7.74E-01 1.44E+01 7.24E-01 7.07E-01 7.23E-01 7.06E-01 1.54E+01 6.54E-01 6.34E-01 6.53E-01 6.33E-01 1.65E+01 5.83E-01 5.61E-01 5.83E-01 5.60E-01 1.76E+01 5.15E-01 4.90E-01 5.14E-01 4.89E-01 1.88E+01 4.50E-01 4.23E-01 4.49E-01 4.23E-01 2.01E+01 3.90E-01 3.62E-01 3.90E-01 3.62E-01 2.15E+01 3.36E-01 3.08E-01 3.36E-01 3.08E-01 2.30E+01 2.89E-01 2.60E-01 2.88E-01 2.59E-01 2.46E+01 2.47E-01 2.18E-01 2.47E-01 2.18E-01 2.63E+01 2.11E-01 1.82E-01 2.11E-01 1.82E-01 2.81E+01 1.79E-01 1.51E-01 1.79E-01 1.51E-01 3.00E+01 1.52E-01 1.24E-01 1.52E-01 1.24E-01 3.21E+01 1.30E-01 1.02E-01 1.30E-01 1.02E-01 3.43E+01 1.11E-01 8.36E-02 1.11E-01 8.36E-02 3.67E+01 9.49E-02 6.84E-02 9.48E-02 6.84E-02 3.92E+01 8.17E-02 5.59E-02 8.17E-02 5.59E-02 4.19E+01 7.06E-02 4.54E-02 7.05E-02 4.54E-02 4.48E+01 6.14E-02 3.69E-02 6.14E-02 3.69E-02 4.79E+01 5.38E-02 2.99E-02 5.38E-02 2.99E-02 5.12E+01 4.75E-02 2.42E-02 4.75E-02 2.42E-02 5.47E+01 4.23E-02 1.96E-02 4.23E-02 1.96E-02 5.85E+01 3.80E-02 1.59E-02 3.80E-02 1.59E-02 6.25E+01 3.45E-02 1.29E-02 3.45E-02 1.29E-02 6.68E+01 3.15E-02 1.04E-02 3.15E-02 1.04E-02 7.15E+01 2.90E-02 8.42E-03 2.90E-02 8.42E-03 7.64E+01 2.69E-02 6.81E-03 2.69E-02 6.81E-03 8.17E+01 2.52E-02 5.51E-03 2.52E-02 5.51E-03 8.73E+01 2.37E-02 4.45E-03 2.37E-02 4.45E-03 9.33E+01 2.24E-02 3.60E-03 2.24E-02 3.60E-03 9.98E+01 2.13E-02 2.91E-03 2.13E-02 2.91E-03