【摘要】 为适应新型超快闪烁材料研究的需要,在原有脉冲X射线时间谱仪的基础上,通过改装微通道板光电倍增管(MCP-PMT),并采用具有快时间响应的前置放大器(FPA)和恒比甄别器(CFD)的方法,使谱仪的时间分辨极限提高到170ps左右。BaF2晶体闪烁光快成分衰减时间谱的测量结果表明:该谱仪可很好地满足新型超快闪烁材料发光衰减时间特性的研究。更多还原

【Abstract】 To meet the needs of research on new fast scintillation materials,the home-made pulsed X-ray facility for fluorescents lifetime measurement was upgraded by using microchannel plate photomultiplier tube(MCP-PMT),fast preamplifier(FPA)and fast constant-fraction discriminator(CFD).The time resolution of the facility is improved to about 170ps.The decay time measurement of the fast scintillation component in BaF2 crystal shows that the facility can be well adequate to the research on decay times of fast scintillation materials.更多还原