Электронный каталог

Статья

Korzhik, M.
An Enhancement of the Light Yield and Improvement of Its Temperature Dependence in Mixed (Pb,Sr)WO&sub(4):La,Y Scintillator / M.Korzhik, Y.Talochka, [a.o.]. – Text : electronic // Optical Materials. – 2026. – Vol. 171. – P. 117781. – URL: https://doi.org/10.1016/j.optmat.2025.117781. – Bibliogr.: 40.

A new modification of the prominent PbWO&sub(4):La,Y crystalline scintillator obtained by introducing Sr to create the (Pb,Sr)WO&sub(4):La,Y compound has been investigated in a wide range of Pb/Sr ratios to define compositions that would allow the expansion of the scope of the material’s application. Comprehensive studies of their structural, thermal, and luminescent properties were conducted using X-ray diffraction, differential scanning calorimetry, photoluminescence, and X-ray excited luminescence spectroscopy. The results demonstrate that changes in the Sr/Pb ratio led to a compositional disorder which significantly influences both the scintillation yield (Y) and its kinetics. The thermal stability of the scintillation yield Y(T) is improved as well. Notably, the optimal composition with x = 0.2–0.3 provides a fiftyfold increase in light output compared to PbWO&sub(4). It is measured to be 15 % over the Y of Bi&sub(4)Ge&sub(3)O&sub(12) and exhibits a low temperature coefficient of Y(T) = –0.6 %/K in the temperature range of 300–400 K. The defined substantial improvement in the Y(T) highlights the potential of compositional disorder to create advanced, high-performance self-activated scintillation materials.



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