Properties of GaAs:Cr-based Timepix detectors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F18%3A00322290" target="_blank" >RIV/68407700:21670/18:00322290 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1748-0221/13/02/T02005" target="_blank" >http://dx.doi.org/10.1088/1748-0221/13/02/T02005</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-0221/13/02/T02005" target="_blank" >10.1088/1748-0221/13/02/T02005</a>

Result language
angličtina
Original language name
Properties of GaAs:Cr-based Timepix detectors
Original language description
The hybrid pixel detector technology brought to the X-ray imaging a low noise level at a high spatial resolution, thanks to the single photon counting. However, silicon as the most widespread detector material is marginally sensitive to photons with energies above 30 keV. Therefore, the high-Z alternatives to silicon such as gallium arsenide and cadmium telluride are increasingly attracting attention of the community for the development of X-ray imaging systems. The results of our investigations of the Timepix detectors bump bonded to sensors made of gallium arsenide compensated by chromium (GaAs:Cr) are presented in this work. The following properties are most important from the practical point of view: the IV characteristics, the charge transport characteristics, photon detection efficiency, operational stability, homogeneity, temperature dependence, as well as energy and spatial resolution are considered. The applicability of these detectors for spectroscopic X-ray imaging is discussed.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
<a href="/en/project/EF16_013%2F0001785" target="_blank" >EF16_013/0001785: Van de Graaff Accelerator - a Tunable Source of Monoenergetic Neutrons and Light Ions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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