Effect of the X-ray dose on the luminescence properties of Ce:LYSO and co-doped Ca,Ce:LYSO single crystals for scintillation applications

被引：15
作者：
Blahuta, Samuel [1 ]
Bessiere, Aurelie [2 ]
Gourier, Didier [2 ]
Ouspenski, Vladimir [1 ]
Viana, Bruno [2 ]
机构：
[1] St Gobain Res, F-93303 Aubervilliers, France
[2] UPMC, Coll France, LCMCP Chim Paristech, F-75231 Paris 05, France
来源：
OPTICAL MATERIALS | 2013年 / 35卷 / 10期
关键词：
Scintillation; Cerium; Orthosilicate; Oxyorthosilicate; Traps; LUTETIUM SILICATE SCINTILLATORS; YTTRIUM CONTENT; DAMAGE;
D O I：
10.1016/j.optmat.2013.03.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mono-doped Ce:LYSO (Lu1.80Y0.2SiO5:Ce) and co-doped Ca,Ce:LYSO and Mg,Ce:LYSO single crystals were prepared by the Czochralski technique. Effects of the X-ray irradiation on the emission spectra and on the light yield are reported. A decrease of the longest wavelength emission (at about 500 am) and a light yield increase are observed after 1 h under X-ray irradiation. As electron paramagnetic resonance (EPR) evidenced no change in the two cerium sites occupancy along with the irradiation time a mechanism based on the evolution of the oxygen vacancies as neighbors of Ce3+ ions is proposed. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：1865 / 1868
页数：4
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