Energy transfer between UO_2~(2+) and Eu~(3+) in POCl_3-SnCl_4 solutions

E.A. Seregina; A.A. Seregin; G.V. Tikhonov

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Energy transfer between UO_2~(2+) and Eu~(3+) in POCl_3-SnCl_4 solutions

机译：POCl_3-SnCl_4溶液中UO_2〜（2+）和Eu〜（3+）之间的能量转移

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The results of the study of interaction between UO_2~(2+) and Eu~(3+) in solutions of POCl_3-SnCl_4 with a constant europium concentration and a variable uranyl concentration are represented. The change of branching factors for transitions ~5D_0 -> ~7F_2 (increase) and ~5D_0 -> ~7F_4 (reduction) is revealed in the Eu~(3+) luminescence spectra. the intense europium luminescence associated with uranyl sensitizing is registered in excitation spectra of Eu~(3+) ions in the range of 350-500 nm. The quenching rate constant of UO_2~(2+) fluorescence with Eu~(3+) is derived and its value is determined to be (5 +- 2) X 10~5 M~(-1) s~(-1). It is estimated that the rate constant of the quenching process with subsequent excitation and fluorescence of europium ion is equal to (3.7+-0.5) X 10~5 m~(-1) s~(-1).

机译：给出了constant浓度恒定，铀酰浓度可变的POCl_3-SnCl_4溶液中UO_2〜（2+）和Eu〜（3+）之间相互作用的研究结果。 Eu〜（3+）发光光谱揭示了跃迁〜5D_0->〜7F_2（增加）和〜5D_0->〜7F_4（还原）的分支因子的变化。 Eu-（3+）离子的激发光谱在350-500 nm范围内记录了与铀酰敏化相关的强烈euro发光。推导了Eu〜（3+）对UO_2〜（2+）荧光的猝灭速率常数，其取值为（5 +-2）X 10〜5 M〜（-1）s〜（-1）。估计the离子的激发和荧光猝灭的速率常数等于（3.7 + -0.5）X 10〜5 m〜（-1）s〜（-1）。

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《Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics》 |2002年第2期|共5页
作者
E.A. Seregina; A.A. Seregin; G.V. Tikhonov;
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正文语种 eng
中图分类合金学与各种性质合金;金属材料;
关键词
Phosphor; liquid quenching; Crystal structure and symmetry; Luminescence;

机译：磷;液相猝灭;晶体结构与对称性;发光;

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Energy transfer between UO_2~(2+) and Eu~(3+) in POCl_3-SnCl_4 solutions

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