EPR AND LUMINESCENCE STUDIES ON HIGH-VALENCY URANIUM CENTERS IN CAF2

被引：16

作者：

LUPEI, A

LUPEI, V

机构：

[1] Central Institute of Physics, IFTAR, Bucharest

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 06期

关键词：

D O I：

10.1088/0022-3719/12/6/023

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Results of the combined EPR and luminescence measurements on white cloudy samples of fluorite, containing hexavalent and pentavalent uranium, are reported. The prevailing U5+ EPR spectrum, having very low symmetry, is analysed. Studies of the changes of the luminescence and EPR spectra in terms of gamma -dose give a direct proof that the main luminescent U6+ centre in fluorite has a trigonally distorted octahedral (UO6 6-) structure. A discussion of the vibronic structure for two luminescent centres is given. The dependence of the luminescence amplitude on the frequency of the chopped pump light in a chronospectroscopic experiment is also interpreted.

引用

页码：1123 / 1130

页数：8

共 11 条

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