Luminescence and radiation defects in electron-irradiated Al2O3 and Al2O3:Cr

被引：59
|
作者：
Makhov, V. N. [1 ,2 ]
Lushchik, A. [1 ]
Lushchik, Ch. B. [1 ]
Kirm, M. [1 ]
Vasil'chenko, E. [1 ]
Vielhauer, S. [1 ]
Haruturlyan, V. V. [3 ]
Aleksanyan, E. [3 ]
机构：
[1] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia
[2] PN Lebedev Phys Inst, Moscow 119991, Russia
[3] Yerevan Phys Inst, Yerevan 375036, Armenia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2008年 / 266卷 / 12-13期
关键词：
Al2O3; ruby; Cr3+ luminescence; F and F+ centers;
D O I：
10.1016/j.nimb.2008.03.145
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Luminescence of Al2O3 single crystals doped with Cr3+ (similar to 500 ppm) (ruby), non-irradiated and irradiated by 50-MeV electrons, has been studied in a wide range of excitation energy (3.75-20 eV) at 9 K and compared with the luminescence of irradiated undoped Al2O3, Irradiation of ruby by 50-Mev electrons (up to fluences of 2 x 10(17) e/cm(2)) does not lead to any significant changes of Cr3+ related luminescence. The comparison of absorption spectra and the excitation spectra of different emissions has shown that the presence of Cr3+ ions strongly reduces the creation of F centers in Al2O3:Cr by 50-MeV electrons. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：2949 / 2952
页数：4
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