介绍了一种利用超短脉冲X射线作为激发光源,用时间关联单光子计数法进行测量的荧光衰减时间谱仪的设计与研制。该仪器具有时间分辨率高、测量动态范围大、使用方便等优点,可应用于晶体、粉末和液体等各种样品的测量,该仪器同时还具有很强的扩展性。 A design and development of a fluorescence decay time spectrometer using time-correlated single-photon counting method using an ultra-short pulse X-ray as an excitation light source is introduced. The instrument has the advantages of high time resolution, large dynamic range of measurement, easy to use, etc., and can be used for measuring various samples such as crystals, powders and liquids. The instrument also has strong scalability.