Abstract
Results of investigation of X-ray sensors on the basis of GaAs compensated with chromium (HR GaAs) are presented in this work. HR GaAs material is shown to have the following physical parameters: the resistivity about 1GOhm*cm, the nonequilibrium charge carrier lifetime – hundreds of nanoseconds. Prototypes of microstrip and array HR GaAs sensors have been manufactured and tested. It is demonstrated that the sensors provide spatial resolution according to the pixel pitch and allow obtaining high quality X-ray images.
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Tyazhev, A., Budnitsky, D., Mokeev, D. et al. GaAs Pixel Detectors. MRS Online Proceedings Library 1576, 801 (2013). https://doi.org/10.1557/opl.2013.1144
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DOI: https://doi.org/10.1557/opl.2013.1144