Growth and scintillation properties of Nd-doped Lu3Al5O12 single crystals by Czochralski and micro-pulling-down methods

Sugiyama, Makoto; Fujimoto, Yutaka; Yanagida, Takayuki; Yamaji, Akihiro; Yokota, Yuui; Yoshikawa, Akira

doi:10.1016/j.jcrysgro.2011.10.030

Cited by 12 publications

(10 citation statements)

References 20 publications

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“…The emission at 530 nm due to the 5d 1 -4f radiative transition of Ce 3+ matches well with the spectral sensitivity of photodetectors used in high-energy physics [10]. LuAG was reported as congruent material, so it is possible to grow undoped and RE 3+ -doped LuAG single crystals from the melt using Czochralski (Cz) [11,12], Bridgman (Bd) [13,14] and micro-pulling-down (l-PD) [15,16] techniques. Although the Cz method is the most convenient and well-developed method, it also has some drawbacks such as lower utilization ratio, serious segregation of dopants and high cost.…”

Section: Introductionsupporting

confidence: 61%

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Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics

Lebbou

Moretti

et al. 2014

Acta Materialia

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Under a stationary stable regime undoped and Ce-doped LuAG (Lu 3 Al 5 O 12 ) single-crystal fibers were grown by a micro-pullingdown technique. The meniscus length corresponding to the equilibrium state was <200 lm. Fluctuations in the fiber composition and pulling rate were found to have a significant effect on the properties of the fibers grown. A great improvement in the performance was found in samples containing low Ce concentrations (60.1 at.%) and produced using pulling rates <0.5 mm min À1 . Under such conditions a good lateral surface fiber quality was obtained and light propagation was significantly improved. Conversely, a high Ce concentration and a high pulling rate resulted in a strong degradation of the fiber surface quality causing defects to appear and a decrease in light output.

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Section: Introductionsupporting

confidence: 61%

“…When the interaction position was moved away from one end of the fiber, the intensity of luminescence decreased and the emission bands shifted to longer wavelengths. As reported before, there are two kinds of propagation losses [6,12]. One is self-absorption due to the overlap between emission and absorption.…”

Section: Light Propagationmentioning

confidence: 78%

Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics

Lebbou

Moretti

et al. 2014

Acta Materialia

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“…For each interacting position, the photoluminescence spectrum is recorded and the set of measurements is shown in Figure 3 and When the interaction position moved away from one end of the fiber, the intensity of luminescence decreased and the emission bands shifted to longer wavelengths. According to the literature [16,17] there are two kinds of light propagation losses: self-absorption and reflection losses in the crystals. The decrease of the intensity of the signal at longer distances between the PMT and the source is related to the both reasons (Figure 3, left).…”

Section: Light Propagationmentioning

confidence: 99%

Growth and characterization of Ce-doped YAG and LuAG fibers

et al. 2017

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Undoped and Ce-doped Lu3Al5O12 (LuAG) and Y3Al5O12 (YAG) single crystal fibers were grown by the micro-pulling down technique (µ-PD) with a purpose to fit the design of new dual-redaout calorimeter planned to operate in future experiences of high energy physics.Fibers up to 20 cm in length and 1mm in diameter were grown along [111] direction. Based on the measurements of the attenuation length along the fibers, the growth conditions to improve the fibers quality were selected. Our results showed that the grown fibers have the capability to be used for future detectors.

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“…These outstanding advantages make LuAG crystals an ideal candidate for future high energy physics, especially for high irradiation backgrounds. The current methods for growing LuAG single crystals mainly include Czochralski (CZ) [20,21], Bridgman (BD) [22,23] and micro-pulling-down (µ-PD) [24,25]. Among them, the CZ method and BD can be used for growing large crystals, but the utilization rate is low and the cost is higher.…”

Section: Introductionmentioning

confidence: 99%

Growth and Characterization of Ce-Doped Luag Single Crystal Fibers from Transparent Ceramics by Laser-Heated Pedestal Method

et al. 2021

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Scintillation single crystal fibers (SCFs) have great potential applications in the new generation of high-energy ray and particle detectors due to their morphological advantages. In this work; Ce:LuAG SCFs with a diameter of 1 mm were grown along the direction of [111] by laser-heated pedestal growth (LHPG) method using a transparent ceramic as the source rod; and a doping concentration was 0.1 at%, 0.3 at%, 1 at%, respectively. The effects of growth rate and annealing in air on the scintillation and optical properties of SCF are discussed in detail. The results of analyzing the absorption spectra; radioluminescence (RL) spectra; pulse-height spectra and fluorescence lifetime of SCFs show that the SCF maintains excellent scintillation performance while having a fiber structure. Therefore; Ce:LuAG SCF is a potential candidate material for detector.

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Growth and scintillation properties of Nd-doped Lu3Al5O12 single crystals by Czochralski and micro-pulling-down methods

Cited by 12 publications

References 20 publications

Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics

Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics

Growth and characterization of Ce-doped YAG and LuAG fibers

Growth and Characterization of Ce-Doped Luag Single Crystal Fibers from Transparent Ceramics by Laser-Heated Pedestal Method

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