Электронный каталог

Статья

Korzhik, M.
Mastering the Suppression of the Phosphorescence of Pr-Doped Aluminum-Gallium Gd&sub(1.5)Y&sub(1.5)Al&sub(2)Ga&sub(3)O&sub(12) Ceramic Scintillators / M.Korzhik, Y.Talochka, [a.o.]. – Text : electronic // Journal of Luminescence. – 2026. – Vol. 290. – P. 121674. – URL: https://doi.org/10.1016/j.jlumin.2025.121674. – Bibliogr.: 53.

The radioluminescence and phosphorescence of Gd&sub(1.5)Y&sub(1.5)Al&sub(2)Ga&sub(3)O&sub(12) transparent scintillation ceramics doped with Pr&sup(3+), Ce&sup(3+), or their combination, as well as co-doped with Mg&sup(2+) were investigated for the first time. The results demonstrate that phosphorescence, which is a well-known phenomenon in Pr&sup(3+)-doped aluminum-gallium garnets, can be effectively suppressed by introduction of Ce&sup(3+) ions and a small concentration of Mg&sup(2+) in the ceramics. The yield of radioluminescence of Ce&sup(3+) and Pr&sup(3+) co-doped ceramics was found to exceed a little that of ceramics doped solely with Ce&sup(3+), showing a low dependence on dopant concentration. The study also reveals that the Gd sublattice plays a crucial role in energy transfer between doping ions. Mg&sup(2+) co-doping acts similarly to the aluminum-gallium garnets solely doped with Ce; it suppresses phosphorescence in Pr&sup(3+)-doped polycationic garnets resulting in sufficient diminishing of the afterglow level. Developed materials maintain high scintillation efficiency which makes them promising for applications in radiation detection.



Спец.(статьи,препринты) = С 344.1ж - Сцинтилляционные счетчики, камеры. Сцинтилляционные вещества. Микроканальные умножители
ОИЯИ = ОИЯИ (JINR)2026