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Crystal growth and scintillation properties of (NaxCa1−2xLux−yNdy)F2 single crystals |
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| Authors: | Yuki Furuya Shingo WakaharaMakoto Sugiyama Hidehiko TanakaKentaro Fukuda Noriaki Kawaguchi Yuui YokotaTakayuki Yanagida Akira Yoshikawa |
| Affiliation: | a Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan b Research & Development Div., Tokuyama Co. Ltd., ICR-Building, Minamiyoshinari, Aoba-ku, Sendai, Japan c New Industry Creation Hatchery Center (NICHe), 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan |
| Abstract: | NaxCa1−2xLux−yNdyF2 single crystals were grown from the melt using the precise atmosphere control type Micro-Pulling-Down (μ-PD) method to investigate their potential as a vacuum-ultraviolet (VUV) scintillators. The grown crystals were single-phase materials with fluorite-type structure (Fm-3m, Z = 4) as confirmed by XRD. The crystals demonstrated 80-90% transmittance above 200 nm wavelength and Nd3+ 5d-4f luminescence (when exited by X-ray) observed around 185 nm. The radioluminescence measurements under 5.5 MeV α-ray excitation (241Am) demonstrated the light yield of 48 [Ph/5.5 MeV-α] and the decay time of 6.4-7.7 ns. |
| Keywords: | Radiation Single crystal growth Inorganic compound Scintillating materials Vacuum-ultraviolet (VUV) Scintillators |
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