采用透射光谱分析、荧光脉冲响应分析及荧光发射光谱等测试手段,研究了一系列不同量铕掺杂 BGO 晶体的辐照损伤及余辉。结果表明,5 ppm Eu_2O_3(wt)掺杂即可达到最佳的抗辐照损伤能力,而且因为 Eu~(3+)离子浓度低,由它引起的荧光衰减余辉也很小。还讨论了微量铕掺杂能提高 BGO 晶体抗辐照损伤能力和随同产生余辉的机制。 The damage and afterglow of a series of BGO crystals doped with different amounts of europium were studied by means of transmission spectrum analysis, fluorescence impulse response analysis and fluorescence emission spectroscopy. The results show that 5 ppm Eu_2O_3 (wt) doping can achieve the best anti - radiation damage ability, and because of the low concentration of Eu 3+ ions, the fluorescence decay persistence caused by it is also very small. We also discuss the mechanism that the trace europium doping can improve the ability of BGO crystal to resist the radiation damage and produce the afterglow.