Detection of x-ray radiation and x-ray detector systems
A detector system, X-ray technology, applied in radiation measurement, X/γ/cosmic radiation measurement, radiation intensity measurement, etc., can solve the problem that it is impossible to definitely reverse the X-ray quantum
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[0069] As explained at the outset, X-ray detectors based on direct conversion semiconductor materials such as cadmium telluride, cadmium zinc telluride, in particular detectors for computed tomography systems suffer from time on the instability. In particular, the detection signal changes over time with a practically constant excitation with x-ray radiation. This is undesirable and leads to artifacts in the imaging, so that this detector with its current performance can only be used with difficulty in x-ray-based imaging methods. By irradiating the semiconductor detector material so many free charge carriers can be generated that a stable state can be established and the polarization effects explained at the outset can be neutralized or stabilized. The stabilized measurement signal or detector signal required for measuring the x-ray radiation is thereby ensured, which enables use in medical imaging. However, in the case of sensor materials or semiconductor detector elements ...
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