Search results for " X-ray and gamma ray detectors"

showing 2 items of 2 documents

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
researchProduct

Ballistic Deficit Pulse Processing in Cadmium-Zinc-Telluride Pixel Detectors for High-Flux X-ray Measurements.

2022

High-flux X-ray measurements with high-energy resolution and high throughput require the mitigation of pile-up and dead time effects. The reduction of the time width of the shaped pulses is a key approach, taking into account the distortions from the ballistic deficit, non-linearity, and time instabilities. In this work, we will present the performance of cadmium–zinc–telluride (CdZnTe or CZT) pixel detectors equipped with digital shapers faster than the preamplifier peaking times (ballistic deficit pulse processing). The effects on energy resolution, throughput, energy-linearity, time stability, charge sharing, and pile-up are shown. The results highlight the absence of time instabilities …

X-ray and gamma ray detectorsPhysics::Instrumentation and DetectorsX-RaysBiochemistrySettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Atomic and Molecular Physics and OpticsCdTe detectorsAnalytical ChemistryZincElectrical and Electronic EngineeringTelluriumInstrumentationCZT detectors; CdTe detectors; X-ray and gamma ray detectorsCZT detectorsCadmiumSensors (Basel, Switzerland)
researchProduct