Synchrotron radiation study of gain, noise, and collection efficiency of gaas sam-apds with staircase structure

HIGHLIGHTS

SUMMARY

    For shorter wavelengths ( and amp;lt;1 nm), i.e., in the X-ray region, their absorption capabilities decrease rapidly with increasing photon energy. If photon absorption takes place in the multiplication region, this causes a substantial increase in the multiplication noise. For that reason, these devices feature shallow absorption regions, which make them less efficient for energies higher than a few keV; nevertheless, they are suitable for investigating some important phenomena that are critical as the device becomes thicker. Two interesting aspects emerged from the results shown here: first, the capability of these . . .

     

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