EXPERIMENTAL-EVIDENCE FOR THE AGGREGATION OF PHOTOSTIMULABLE CENTERS IN BAFBR-EU2+ SINGLE-CRYSTALS BY CROSS RELAXATION SPECTROSCOPY

被引：58

作者：

KOSCHNICK, FK ^{[1
]}

SPAETH, JM ^{[1
]}

EACHUS, RS ^{[1
]}

MCDUGLE, WG ^{[1
]}

NUTTALL, RHD ^{[1
]}

机构：

[1] EASTMAN KODAK CO,CORP RES LABS,ROCHESTER,NY 14650

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.67.3571

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spatial correlation between the activator ion Eu2+ and electron and hole traps generated by x irradiation is thought to play a decisive role in the photostimulated emission process of the storage phosphor BaFBr:Eu2+. We report the first direct experimental evidence for correlations among F centers, hole centers, and Eu2+ obtained by measuring cross relaxation effects in optically detected paramagnetic resonance. BaFBr treated with the known procedures for removing oxygen still retains 50 ppm or more of O2-. This ion is critically involved in the formation of F and hole centers.

引用

页码：3571 / 3574

页数：4

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