磷酸体系中铀酰发光衰减的研究  

STUDY OF URANYL LUMINESCENCE DECAY IN PHOSPHORIC ACID SOLUTION

作　　者：周平[1] 王志麟[1] 许颜正 张磊[1] 王亚波[1] 郑企克[1] 

机构地区：[1]复旦大学激光化学研究室,上海200433

出　　处：《核化学与放射化学》1993年第4期198-202,共5页Journal of Nuclear and Radiochemistry

摘　　要：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。Uranyl luminescence in phosphoric acid system is studied in this communication. Excited uranyls by nitrogen laser appear single or bi-exponential luminescence decays in phosphoric acid system, when uranyl or phosphoric acid concentrations are lower, single exponential luminescence decays appear, whereas with higher concentration of uranyl or phosphoric acid, biexponential decays are observed. Time-resolved spectra are measured. The reasons of the phenomena might be resulted from the luminescences of the long-lived *UO2H2PO4(H3PO4)2+and the short-lived * UO2 (H3PO4) 32+.

关 键 词：铀酰 发光 磷酸 

分 类 号：O614.62[理学—无机化学]