Scintillation properties of Nd3+, Tm3+, and Er3+ doped LuF3 scintillators in the vacuum ultra violet region
作者： Takayuki Yanagida , Noriaki Kawaguchi , Kentaro Fukuda , Shunsuke Kurosawa , Yutaka Fujimoto
DOI: 10.1016/J.NIMA.2011.08.056
关键词: Luminescence 、 Radioluminescence 、 Transmittance 、 Scintillation 、 Optoelectronics 、 Scintillator 、 Photoelectric effect 、 Streak camera 、 Physics 、 Doping
摘要: Abstract In order to develop novel vacuum ultra violet (VUV) emitting scintillators, we grew Nd 0.5%, Tm and Er 0.5% doped LuF 3 scintillators by the μ-pulling down method, because has a very wide band gap 3+ , luminescence centers show fast intense 5d–4f emission in VUV region. Transmittance X-ray induced radioluminescence were studied these three samples using our original spectrometer made Bunkou-Keiki company. region, transmittance of 20–60% was achieved for all samples. The peaks appeared at approximately 180, 165, 164 nm respectively. Using PMT R8778 (Hamamatsu), measured their light yields under 241 Am α-ray excitation. Compared with Nd:LaF scintillator, which 33 photoelectrons/5.5 MeV α, Nd:LuF Tm:LuF showed 900±90 170±20 ph/5.5 MeV-α, Only one, can detect 137 Cs 662 keV γ-ray photoabsorption peak yield 1200±120 ph/MeV measured. We also investigated decay time profiles picosecond pulse equipped streak camera, main component turned out be 7.63 ns.
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