Optical, luminescence and scintillation properties of Mg.sup.2+./sup.-codoped (Lu,Y).sub.3./sub.Al.sub.2./sub.Ga.sub.3./sub.O.sub.12./sub.:Pr garnet crystals: The effect of Y admixture

0560308 - FZÚ 2023 RIV GB eng J - Journal Article
Sreebunpeng, K. - Chewpraditkul, Wa. - Chewpraditkul, W. - Yoshikawa, A. - Witkowski, M.E. - Drozdowski, W. - Nikl, Martin
Optical, luminescence and scintillation properties of Mg²⁺-codoped (Lu,Y)₃Al₂Ga₃O₁₂:Pr garnet crystals: The effect of Y admixture.
Radiation Physics and Chemistry. Roč. 201, Nov (2022), č. článku 110400. ISSN 0969-806X. E-ISSN 1879-0895
R&D Projects: GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : Pr³⁺ * afterglow * radioluminescence * scintillation * thermoluminescence
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.9, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.radphyschem.2022.110400

Mg - codoped Lu3-xYxAl2Ga3O12:Pr (x = 0, 1, 2, and 3) garnet crystals were grown by micro-pulling down method and scintillation characteristics were investigated. An observed red shift of the Pr3+ 5d1 → 4f luminescence with increasing Y content can be attributed to an increase in crystal field splitting of the 5d levels. Temperature dependence of radioluminescence (RL) spectra was measured in the temperature range of 10–350 K, yielding a decrease of RL yield with increasing temperature for all samples. The LuY2Al2Ga3O12:Pr,Mg exhibits light yield of 9100 photons/MeV along with two scintillation decay components of 8.6 ns (9%) and 25 ns (91%). Afterglow and thermoluminescence characteristics are also investigated.

Permanent Link: https://hdl.handle.net/11104/0333386