Linear-supralinear-sublinear beta-ray dose dependences of TL, OSL and afterglow in undoped CVD diamond

被引：10

作者：

Chernov, V. ^{[1
]}

Piters, T. ^{[1
]}

May, P. W. ^{[2
]}

Melendrez, R. ^{[1
]}

Pedroza-Montero, M. ^{[1
]}

Barboza-Flores, M. ^{[1
]}

机构：

[1] Univ Sonora, Dept Invest Fis, Hermosillo 83190, Sonora, Mexico

[2] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2010年 / 207卷 / 09期

关键词：

beta-rays; CVD diamond; OSL; supralinearity; TL; STIMULATED LUMINESCENCE; RADIATION-DOSIMETRY; THERMOLUMINESCENCE;

D O I：

10.1002/pssa.201000021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The thermoluminescence (TL), optically stimulated luminescence (OSL) and afterglow (AG) properties of chemical vapour deposition (CVD) diamond film irradiated by beta rays with doses from 0.5 to 1000 Gy have been studied. The film (23 mu m) was grown for 47 h on monocrystalline silicon. The TL dose responses are similar for all the peaks and exhibit the typical linear-supralinear-sublinear behaviour. The supralinear growth starts at about 1.0 Gy and goes up to 100 Gy. At higher doses the dose responses go to saturation. The AG and OSL dose responses are similar to the TL one and exhibit the supralinear-sublinear behaviour. The linear part (if it exists) is not observed due to low AG and OSL intensity at doses lower than 2.0 Gy. The diamond film that had been irradiated with high doses, partially preheated and irradiated again with low test dose, exhibits increased TL, OSL and AG sensitivity that can be considered as a mixture of the supralinearity and sensitization. Pure sensitization is observed for the 350 and 400 K TL peaks and AG after preheating the sample to temperatures higher than 500 K. This sensitization gradually decreases from 10 to 1 as the preheating increases from 500 to 770 K. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2125 / 2130

页数：6

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