The characterization of scintillator performance at temperatures up to 400 degrees centigrade

Recent R&D Trends in Inorganic Single‐Crystal Scintillator Materials for Radiation Detection

“…[ 138,139 ] This is consistent with the fact that thermoluminescence characteristics show increasing trap depth when lutetium is admixed with YAG or YAP hosts in the case of cerium doping and similar production technologies. It was shown that, with an increase of temperature up to about 150 °C, the light yield in LuAG:Pr or LuAlO 3 :Ce (LuAP:Ce) increases by a factor of up to 1.8, while no such increase is obtained for YAG:Ce or YAP:Ce.…”

“…A drawback of LaX 3 :Ce scintillators for low count rate applications (e.g., in radioastronomy) is their intrinsic radioactivity due to the presence of the isotope 138 La, which has a natural abundance of 0.09% and half-life τ 1/2 ≈ 10 11 years. [ 59 ] That was why the R&D studies also included the binary CeX 3 (X = Cl,Br) single crystals, where the intrinsic radioactivity is at least one order of magnitude lower.…”

“…Due to a severe instability of the LuAP perovskite phase in the process of crystal growth from the melt (see recent studies [ 174,175 ] for further details), resulting in a high price for the crystals, mixed (Lu,Y)AlO 3 :Ce scintillators were fi nally chosen for industrial-scale production. [ 138,141,142,[144][145][146][147]178 ] However, despite several attempts, e.g., by co-doping, [179][180][181] no successful strategy has so far been found to substantially improve it. The reasons for the light-yield decrease in Lu-rich aluminium perovskite seem to be similar to what was seen in garnets (see Section 3.1).…”

Energy migration processes in undoped and Ce-doped multicomponent garnet single crystal scintillators

“…Several groups [17][18][19][20][21][22][23][24] studied scintillation characteristic of LuAG:Pr and found them very promising due to favorable combination of fast scintillation decay dominated by 20 nanosecond component and light yield approaching 20 000 phot/MeV with energy resolution 4.6%@662 keV. Moreover, its scintillation parameters do not deteriorate significantly up to 300 o C [25]. In recent years, by the "band-gap engineering" and tuning the Ce 3+ energy level position strategy [26,27], dramatic improvement of the scintillation performances has been achieved compared to simple aluminum garnet scintillators.…”

Thermomechanical Fatigue Behavior of Spray-Deposited SiCp/Al-Si Composite Applied in the High-Speed Railway Brake Disc

“…The total strain amplitude is 0.3% and R of stress ratio is 0.1. Considering that the disc surface temperature is generally 150-400°C, sometimes up to 450°C [24], specimens were heated using induction heater from minimum temperature of 150°C to a maximum temperature of 400°C. The cycle period (total heating and cooling times) was 100 s for the TMF experiments.…”