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研究了铀酰离子在磷酸体系中的发光现象。在氮分子激光激发下,铀酰激发态在磷酸体系中呈不同形式的发光衰减。当铀酰浓度或磷酸浓度较低时,呈现单指数发光衰减。而当铀酰浓度或磷酸浓度较高时,呈现双指数发光衰减。我们还测定了它们的时间分辨发光光谱。并对发光现象的产生原因作了初步的探讨。
The luminescence of uranyl ion in phosphoric acid system was studied. Under the nitrogen laser excitation, uranyl excited states showed different forms of luminescence decay in phosphoric acid system. When the uranyl concentration or phosphoric acid concentration is low, single-exponential luminescence decays. However, when the concentration of uranyl or phosphoric acid is high, the dual exponential luminescence decays. We also measured their time-resolved luminescence spectra. And the cause of the phenomenon of light made a preliminary discussion.