A method to improve spectral resolution in planar semiconductor gamma-ray detectors

Abstract

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Progress in the Development of CdZnTe Unipolar Detectors for Different Anode Geometries and Data Corrections

“…Electronic methods have also been used to improve the spectrometric performance of CdZnTe detectors, such as pulse shape discrimination (PSD) [16–19] and pulse rise-time compensation (PRC) [17,20]. Both of these techniques are implemented in combination with hardware and software.…”

“…The aim of PRC is to compensate pulse amplitude of those events with severe hole trapping according to pulse shape characteristic. Different approaches were reported to realize PRC through different bi-parametric spectrums (BPS), such as “pulse amplitude & pulse rise-time” spectrum [17] as well as “fast/slow ratio & slow signal” spectrum [20]. BPS is a useful analysis tool and has a real advantage in spectrum correction, e.g., scattering rejection [2,21].…”

CdZnTe spectra improvement through digital pulse amplitude correction using the linear sliding method

“…This is a well-known drawback of CZT detectors. Considering this effect, Amptek s introduced in the market an analog Rise-Time Discriminator (RTD) based on a charge comparison method [8]. However, this is not a standard discrimination module for most of the CZT detectors.…”