Research output: Contribution to journal › Article › peer-review
An enhancement of the light yield and improvement of its temperature dependence in mixed (Pb,Sr)WO4:La,Y scintillator. / Korzhik, M.; Kuznetsov, A.; Bondarau, A. et al.
In: Optical Materials, Vol. 171, 117781, 03.2026.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - An enhancement of the light yield and improvement of its temperature dependence in mixed (Pb,Sr)WO4:La,Y scintillator
AU - Korzhik, M.
AU - Kuznetsov, A.
AU - Bondarau, A.
AU - Grigorieva, V.
AU - Komendo, I.
AU - Khramtsova, D.
AU - Postupaeva, A.
AU - Shlegel, V.
AU - Talochka, Y.
AU - Vasil’ev, A.
AU - Yelisseyev, A.
N1 - This work was supported by the Russian Science Foundation, grant N◦ 25-73-30014 https://rscf.ru/en/project/25-73-30014/. Analytical measurements were performed at Research Chemical and Analytical Center NRC “Kurchatov Institute” Shared Research Facilities. Shared research facilities: HPC computing resources at Lomonosov Moscow State University, the HybriLIT Heterogeneous Computing Platform at the Joint Institute for Nuclear Research, Multi-elemental and Isotope Research of Sobolev Institute of Geology and Mineralogy, Novosibirsk are appreciated.
PY - 2026/3
Y1 - 2026/3
N2 - A new modification of the prominent PbWO4:La,Y crystalline scintillator obtained by introducing Sr to create the (Pb,Sr)WO4: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 PbWO4. It is measured to be 15 % over the Y of Bi4Ge3O12 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.
AB - A new modification of the prominent PbWO4:La,Y crystalline scintillator obtained by introducing Sr to create the (Pb,Sr)WO4: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 PbWO4. It is measured to be 15 % over the Y of Bi4Ge3O12 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.
KW - Density of electronic states
KW - Lead tungstate
KW - Scintillation kinetics
KW - Scintillation yield
KW - Solid solution
UR - https://www.scopus.com/pages/publications/105024306158
UR - https://www.mendeley.com/catalogue/fb262d37-d5cc-32d1-9e96-3c734edcda85/
U2 - 10.1016/j.optmat.2025.117781
DO - 10.1016/j.optmat.2025.117781
M3 - Article
VL - 171
JO - Optical Materials
JF - Optical Materials
SN - 0925-3467
M1 - 117781
ER -
ID: 72625543