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Scintillation properties of Yb~(3+)-doped YAG transparent ceramics

机译：掺Yb〜（3+）YAG透明陶瓷的闪烁特性

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摘要

We investigated scintillation properties of Yb~(3+) -doped Y_3A_5O_(12) (YAG) transparent ceramics with different dopant concentrations. The transparency of both 0.3% and 15% Yb3+-doped exceeded 70% in the wavelength range 300-800 nm, and two kinds of absorption bands due to charge transfer (CT) transition and 4f-4f forbidden transition of Yb~(3+) were observed around 200-250 nm and 900 nm, respectively. Ultraviolet luminescence caused by the CT transition between Yb~(3+) and O~(2-) was observed under α-ray excitation from 241Am sealed source. The scintillation decay times were determined to be about 2.2 ns (Yb 0.3%) and 1.4 ns (Yb 15%) using the streak camera system equipped with pulsed X-ray source. From ~(241) Am alpha-ray-excited pulse height spectra, the relative scintillation light yield of 0.3% and 15% Yb~(3+)-doped ceramics was 7% and 10% compared with that of BGO commercial scintillator.
机译：我们研究了不同掺杂浓度的Yb〜（3+）掺杂Y_3A_5O_（12）（YAG）透明陶瓷的闪烁特性。在300-800 nm波长范围内，掺0.3％和15％的Yb3 +的透明性均超过70％，并且由于Yb〜（3+）的电荷转移（CT）跃迁和4f-4f禁止跃迁两种吸收带分别在200-250 nm和900 nm处观察到）。在241Am密封源的α射线激发下，观察到了由Yb〜（3+）和O〜（2-）之间的CT跃迁引起的紫外发光。使用配备脉冲X射线源的条纹相机系统，确定闪烁衰减时间约为2.2 ns（Yb 0.3％）和1.4 ns（Yb 15％）。从〜（241）Amα射线激发的脉冲高度光谱来看，与BGO商用闪烁体相比，掺杂0.3％和15％的Yb〜（3+）陶瓷的相对闪烁光产率分别为7％和10％。

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