根据BaF2晶体闪烁光快、慢成分波段的不同,设计并制备了用于抑制该晶体闪烁光慢成分的AL2O3/MgF2/Al/MgF2…金属-介质选择吸收膜系.透射光谱、发射光谱和发光衰减时间谱的实验结果显示,所研制的选择吸收膜系达到了预期的要求,BaF2晶体闪烁光快、慢成分比提高了80倍以上,有效地提高了BaF2闪烁晶体在高计数率测量中的应用价值.
On the basis of the difference of the emission bands between the fast and slow components in BaF2
crystal, the metal/dielectric multilayers filter with several periods of Al2O3/MgF2/Al/MgF2… was designed and developed in order
to suppress the slow component of the scintillation light in BaF2. The results from transmission, emission and decay time spectrum show that
the film can increase about 80 times of the ratio of the intensities of the fast emission to the slow one and can widen the application field of BaF2
scintillation crystal in high count rate experiments.
参考文献
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