Registration Number
0222U000111,
0121U113694
, R & D reports
Title
Heterostructured materials for ultrafast detection of ionizing particles
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Head
Sidletskyi Oleh Ts., д.т.н.
Registration Date
03-01-2022
Organization
Institute for scintillation materials NAS Ukraine
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For the first time, single crystals and fibers based on YAGG: Ce co-doped with carbon were obtained by the Czochralski method and μ-PD. It was found that single crystals containing carbon after high-temperature annealing in an atmosphere of oxygen and argon show record light output values for this material. From the optical absorption spectra, it was determined that the distribution of cerium in crystals that do not contain carbon is not as homogeneous as in crystals that contain carbon. The use of YAG:C crystals as a raw material obtained by cheaper technology using tungsten crucibles allows to reduce the number of loads of iridium crucible in three times, which significantly extends its lifetime. The luminescence decay times of carbon-doped single crystals are 19.2 ns, 33 ns, 32 ns for unannealed samples and samples annealed in air and argon, respectively. Such luminescence decay times and fairly high light output of grown crystals make the obtained single crystals a promising candidate for use as a heavy scintillator in modern heterostructured detectors for high energy physics and diagnostic medicine.
Product Description
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Gerasymov Iaroslav V.
Kofanov Denys О.
Sidletskyi Oleh Ts.
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2022-03-09
