Search results for "Charge-sharing correction"

showing 4 items of 4 documents

Incomplete Charge Collection at Inter-Pixel Gap in Low- and High-Flux Cadmium Zinc Telluride Pixel Detectors.

2022

The success of cadmium zinc telluride (CZT) detectors in room-temperature spectroscopic X-ray imaging is now widely accepted. The most common CZT detectors are characterized by enhanced-charge transport properties of electrons, with mobility-lifetime products μeτe > 10−2 cm2/V and μhτh > 10−5 cm2/V. These materials, typically termed low-flux LF-CZT, are successfully used for thick electron-sensing detectors and in low-flux conditions. Recently, new CZT materials with hole mobility-lifetime product enhancements (μhτh > 10−4 cm2/V and μeτe > 10−3 cm2/V) have been fabricated for high-flux measurements (high-flux HF-CZT detectors).…

Charge-sharing correctionPhotonsPhysics::Instrumentation and DetectorsX-RaysSettore FIS/01 - Fisica SperimentaleAstrophysics::Instrumentation and Methods for AstrophysicsIncomplete charge collectionBiochemistrySemiconductor pixel detectorsAtomic and Molecular Physics and OpticsSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)CZT detectors; charge sharing; incomplete charge collection; charge-sharing correction; semiconductor pixel detectorsAnalytical ChemistryZincCadmium CompoundsElectrical and Electronic EngineeringCharge sharingTelluriumInstrumentationCZT detectorsCadmiumSensors (Basel, Switzerland)
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Room-temperature performance of 3 mm-thick cadmium-zinc-telluride pixel detectors with sub-millimetre pixelization.

2020

Cadmium–zinc–telluride (CZT) pixel detectors represent a consolidated choice for the development of room-temperature spectroscopic X-ray imagers, finding important applications in medical imaging, often as detection modules of a variety of new SPECT and CT systems. Detectors with 3–5 mm thicknesses are able to efficiently detect X-rays up to 140 keV giving reasonable room-temperature energy resolution. In this work, the room-temperature performance of 3 mm-thick CZT pixel detectors, recently developed at IMEM/CNR of Parma (Italy), is presented. Sub-millimetre detector arrays with pixel pitch less than 500 µm were fabricated. The detectors are characterized by good room-temperature performan…

Nuclear and High Energy PhysicsMaterials sciencePhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical Phenomena02 engineering and technology01 natural sciencesDot pitchCollimated lightlaw.inventionCharge sharingchemistry.chemical_compoundOpticslaw0103 physical sciencesInstrumentation010302 applied physicsX-ray and gamma ray detectors; CdZnTe pixel detectors; charge sharing; charge losses; charge-sharing correction; spectroscopic X-ray imagingRadiationPixelbusiness.industrySettore FIS/01 - Fisica SperimentaleDetectorCdZnTe pixel detectors charge losses charge sharing charge-sharing correction spectroscopic X-ray imaging X-ray and gamma ray detectors021001 nanoscience & nanotechnologySettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)SynchrotronCadmium zinc telluridechemistry0210 nano-technologyPixelizationbusinessJournal of synchrotron radiation
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Energy Recovery of Multiple Charge Sharing Events in Room Temperature Semiconductor Pixel Detectors

2021

Multiple coincidence events from charge-sharing and fluorescent cross-talk are typical drawbacks in room-temperature semiconductor pixel detectors. The mitigation of these distortions in the measured energy spectra, using charge-sharing discrimination (CSD) and charge-sharing addition (CSA) techniques, is always a trade-off between counting efficiency and energy resolution. The energy recovery of multiple coincidence events is still challenging due to the presence of charge losses after CSA. In this work, we will present original techniques able to correct charge losses after CSA even when multiple pixels are involved. Sub-millimeter cadmium–zinc–telluride (CdZnTe or CZT) pixel detectors we…

Physics::Instrumentation and DetectorsCZT pixel detectors030303 biophysicsTP1-1185Radiation01 natural sciencesBiochemistryCoincidenceCollimated lightArticleAnalytical ChemistryCharge sharingcharge-sharing correction03 medical and health sciencesOptics0103 physical sciencesElectrical and Electronic EngineeringInstrumentationPhysics0303 health sciencesCharge sharing; Charge-sharing correction; CZT pixel detectors; Semiconductor pixel detectorscharge sharingPixel010308 nuclear & particles physicsbusiness.industryChemical technologyCounting efficiencyDetectorsemiconductor pixel detectorsSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Atomic and Molecular Physics and OpticsPhoton countingbusinessSensors
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Development of 2D & 3D cadmium–zinc–telluride spectroscopic imagers for X-ray and gamma ray applications

2021

spectroscopic X-ray imagingcharge sharingcharge lossespectroscopic X-ray and gamma-ray imaging.X-ray and gamma ray detectorCdZnTe pixel detector3D CdZnTe detectorSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)charge-sharing correctiondrift strip detector
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