Growth of Nd doped (Lu, Gd)3(Ga, Al)5O12 single crystal by the micro pulling down method and their scintillation properties

Abstract

a b s t r a c tNd 1 mol% doped (Lu, Gd) 3 (Ga, Al) 5 O 12 (LGGAG) single crystals were grown by the micro-pulling down (l-PD) method. Luminescence and scintillation properties such as absorption, excitation and emission spectra, light yield and decay time were evaluated. Nd1%:Lu 3 Al 5 O 12 showed the highest light output of around 8200 photons/MeV among the grown crystals. Scintillation decay time of Nd:Y 3 Al 5 O 12 was 1.32 ls (36%) 2.02 ls (64%). Nd:Lu 3 Ga 3 Al 2 O 12 was relatively high dense scintillator of 7.38 g/cm 3 with good light yield of 6800 photons/MeV and scintillation decay time of 0.20 ls (5%) 2.60 ls (95%).

Evaluation of the Structural, Near-Infrared Luminescence, and Radioluminescence Properties of Nd3+ Activated TTB-Lead Metatantalate Phosphors

“…In radioluminescence process, when the energy absorbed in the host material is induced by high-energy radiation, then the energy passes to the RE emission center and the photons are emitted in a relaxation process. The radioluminescent or scintillator materials are used such as in the high energy or nuclear physics detectors, the advanced techniques for homeland security, the high-tech industrial applications, and the medical imaging techniques (to detect accelerated particles and highenergy photons) (30)(31)(32)(33)(34)(35)(36).…”

NIR photoluminescence and radioluminescence characteristics of Nd3+ doped BaTa2O6 phosphor

“…Therefore, Nd doped materials are well‐known as solid‐state phosphors because of its near infrared (NIR) characteristics. As scintillation material, different studies have been reported with the scintillation properties of Nd doped oxides . Nd doped NIR phosphors have been regarded to great interest as a new generation NIR emitting scintillator .…”

“…As scintillation material, different studies have been reported with the scintillation properties of Nd doped oxides. [4][5][6] Nd doped NIR phosphors have been regarded to great interest as a new generation NIR emitting scintillator. 7 NIR emission of Nd ion due to the 4f-4f transitions has great transparency to the biological tissue, so it has a considerable potential for bio-imaging applications.…”

Fabrication of Ce-doped Gd$lt;inf$gt;3$lt;/inf$gt;(Al, Ga)$lt;inf$gt;5$lt;/inf$gt;O$lt;inf$gt;12$lt;/inf$gt; Powders Using Co-precipitation Method

“…At present, both Gd 3 Al 2 Ga 3 O 12 :Ce (GAGG:Ce) single crystals and ceramics have been studied by several groups. GAGG:Ce single crystals have been mainly grown by the Czochralski(CZ) method [6][7][8] , micro-pulling down(μ-PD) method [9][10][11] , and Floating Zone(FZ) method [12][13] . GAGG crystals grown by micro-pulling-down (μ-PD) process have a light yield of 56,000 photon/MeV when Ga content locates at 2.7 atoms per garnet formula unit and energy resolution of 5.3% [11] .…”