Free carrier absorption in self-activated PbWO4 and Ce-doped Y3(Al0.25Ga0.75)3O12 and Gd3Al2Ga3O12 garnet scintillators
Source abstract
Abstract
Abstract Nonequilibrium carrier dynamics in the scintillators prospective for fast timing in high energy physics and medical imaging applications was studied. The time-resolved free carrier absorption investigation was carried out to study the dynamics of nonequilibrium carriers in wide-band-gap scintillation materials: self-activated led tungstate (PbWO4, PWO) ant two garnet crystals, GAGG:Ce and YAGG:Ce. It was shown that free electrons appear in the conduction band of PWO and YAGG:Ce crystals within a sub-picosecond time scale, while the free holes in GAGG:Ce appear due to delocalization from Gd3+ ground states to the valence band within a few picoseconds after short-pulse excitation. The influence of Gd ions on the nonequilibrium carrier dynamics is discussed on the base of comparison the results of the free carrier absorption in GAGG:Ce containing gadolinium and in YAGG without Gd in the host lattice.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Radiation Detection and Scintillator Technologies · Atomic and Subatomic Physics Research · Luminescence Properties of Advanced Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
Show source-provided references
1. Intrinsic scintillation pulse shape measurements by means of picosecond x-ray excitation for fast timing applications10.1016/j.nima.2014.08.019 ↗
2. Performance of the prototype of the electromagnetic calorimeter for PANDA10.1016/j.nima.2011.06.044 ↗
3. Time reconstruction and performance of the CMS electromagnetic calorimeter
4. Can transient phenomena help improving time resolution in scintillators10.1109/TNS.2013.2282232 ↗
5. New detecting techniques for a future calorimetry10.1088/1742-6596/587/1/012056 ↗
6. Luminescence rise time in self-activated PbWO4 and Ce-doped Gd3Al2Ga3O12 scintillation crystals10.1016/j.jlumin.2016.05.015 ↗
7. 2009
8. 2006 · vol. 1
9. Lead tungstate scintillation material10.1016/S0168-9002(02)00916-6 ↗
10. Excitonic emission of scheelite tungstates AWO4 (A = Pb, Ca, Ba, Sr)10.1016/S0022-2313(99)00569-4 ↗
11. Composition engineering in cerium-doped (Lu,Gd)3(Ga,Al)5O12 single-crystal scintillators10.1021/cg200694a ↗
12. Scintillation in cerium-activated gadolinium-based crystals10.1002/pssb.2221970132 ↗
13. Cz grown 2-in. size Ce:Gd3(Al,Ga)5O12 single crystal; relationship between Al, Ga site occupancy and scintillation properties10.1016/j.optmat.2014.04.001 ↗
14. Light-yield improvement trends in mixed scintillation crystals10.1002/pssa.201431137 ↗
15. Development of transparent ceramic Ce-doped gadolinium garnet gamma spectrometers10.1109/TNS.2013.2261826 ↗
16. Evidence of the formation of mixed-metal garnets via sol-gel synthesis10.1016/S0925-3467(02)00271-9 ↗
17. Scintillator-oriented combinatorial search in Ce-doped (Y,Gd)3(Ga,Al)5O12 multicomponent garnet compounds10.1088/0022-3727/44/50/505104 ↗
18. Synthesis and luminescence properties of Y2.94Al5−mGamO12:0.06Ce3+ (1≤m≤2.5) green phosphors for white LEDs10.1016/j.ceramint.2015.09.001 ↗
19. Near-infrared multi-wavelengths long persistent luminescence of Nd3+ ion through persistent energy transfer in Ce3+, Cr3+ co-doped Y3Al2Ga3O12 for the first and second bio-imaging windows10.1063/1.4929495 ↗
20. Yellow persistent luminescence in Ce3+-Cr3+-codoped gadolinium aluminum gallium garnet transparent ceramics after blue-light excitation10.7567/APEX.7.062201 ↗
21. Bright persistent ceramic phosphors of Ce3+-Cr 3+-codoped garnet able to store by blue light10.1063/1.4868138 ↗
22. Ogieglo · 2012
23. A review on how lanthanide impurity levels change with chemistry and structure of inorganic compounds10.1149/2.001302jss ↗