X-ray excited optical luminescence of Ce-doped BaAl2O4

被引：22

作者：

Rezende, Marcos V. dos S. ^{[1
]}

Montes, Paulo J. R. ^{[2
]}

Valerio, Mario E. G. ^{[1
]}

机构：

[1] Univ Fed Sergipe, Dept Phys, BR-49100000 Sao Cristovaro, SE, Brazil

[2] Fed Inst Sergipe IFS, BR-49400000 Largato, SE, Brazil

来源：

JOURNAL OF LUMINESCENCE | 2012年 / 132卷 / 05期

关键词：

X-ray excited optical luminescence; Barium aluminates; Cerium; Scintillation; SCINTILLATION PROPERTIES; CRYSTALS; PHOSPHORESCENCE; DEPENDENCE; MECHANISMS; FILMS;

D O I：

10.1016/j.jlumin.2011.12.064

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The luminescence properties of Ce3+ in BaAl2O4 are reported. The results of simultaneous measurements of XEOL and XAS in the X-ray energy range that includes the Ba L-II,L-III-edges and Ce L-III edge are shown. The XEOL yield increases as the energy of the photons increases. The radioluminescence spectra, taken from 200 to 1100 nm, showed broad emission bands corresponding to 5d(1) -> F-2(5/2), F-2(7/2) transitions of Ce3+ when incorporated into two nonequivalent Ba sites. The lifetime of the light emission was also measured using the single bunch operation mode at the Brazilian National Synchrotron Laboratory (LNLS), and BaAl2O4:Ce3+ showed single exponential decay time component of about 44.3 ns. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1106 / 1111

页数：6

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