长余辉材料余辉性能测试的影响因素

为了规范长余辉材料余辉性能测试的标准化，采用屏幕亮度计测试了SrAl2O4：Eu^2＋，Dy^3＋长余辉材料的余辉性能；研究了激发光源、激发时间、样品粒度和用量对余辉性能测试的影响，结果表明在9W三基色灯下激发15min可使余辉材料发光亮度达到饱和，随着样品粒径增大和质量增加，发光强度明显增强，余辉时间也显著延长．

Influence Factors of the Afterglow Properties Testing of Long Afterglow Materials

In order to improve the afterglow properties testing standardization of the long afterglow materials,the afterglow properties of the long afterglow SrAl_2O_4: Eu~(2+),Dy~(3+) were measured by using ST-86LA brightness meter.The influence factors of the afterglow properties testing were studied by varying excitation light source,excitation time,particle size and mass of the long afterglow materials.The result indicates that the brightness of the long afterglow materials reached saturation under 9W conventional tricolor fluorescent for 15min,the brightness improved and the decay time prolonged with the increasing of particle size and mass of samples.