Oxidation of Sm2+ in β-irradiated Sm-doped borosilicate glasses under laser illumination

被引：17

作者：

Malchukova, E ^{[1
]}

Boizot, B

Petite, G

Ghaleb, D

机构：

[1] CEA, Solides Irradies Lab, Ecole Polytech, CNRS,UMR 7642, F-91128 Palaiseau, France

[2] Ecole Polytech, F-91128 Palaiseau, France

[3] CEA Vahlro, DEN, DIEC, SESC,LECL, F-30207 Bagnols Sur Ceze, France

来源：

JOURNAL OF LUMINESCENCE | 2005年 / 111卷 / 1-2期

关键词：

luminescence; glasses; irradiation; thermoionization;

D O I：

10.1016/j.jlumin.2004.06.004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Borosilicate glasses doped with samarium have been prepared. Samples exposed to 4 x 10(9) Gy of beta-irradiation have been investigated by fluorescence measurements, showing a strong reduction process of SM3+ to SM2+ ions in the irradiated samples. Oxidation of Sm2+ was observed in this glass as a result of frequency-doubled cw Nd:YAG laser irradiation, but not when using a pulsed titanium-doped sapphire laser. Influence of laser intensity was studied, showing that an increase of the laser intensity could induce complete oxidation of SM2+ ions. Such effect is not observed at low temperature nor using ultra short laser pulses. The conclusion is that the effect is of thermal origin. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：53 / 59

页数：7

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