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Thermoluminescent response of gamma irradiated Na^(+)–Cu^(+) ionexchanged silicate glass in large dose range

Nuclear Science and Techniques 2023年第5期34卷 22-32页

作者： Safa Toumi Khaled Farah Laboratoire de Physico‑Chimie des Matériaux Département de PhysiqueFacultédes Sciences de MonastirUniversitéde MonastirMonastirTunisia Institut Supérieur du Transport et de la Logistique de Sousse Universitéde Sousse4023 SousseTunisia Laboratoire de Recherche en Energie et Matière Développement des Sciences Nucléaires(LR16CNSTN02)Centre National des Sciences et Technologies Nucléaires2020 Sidi‑ThabetTunisia

The introduction of metals into vitreous matrices is the origin of various interesting phenomena;in particular,the presence of copper ions in glass has been the subject of considerable research because of its numerous applications.The ion-exchange process is primarily used to introduce copper ions into glass matrices.The thermoluminescence(TL)of silicate glass was studied to evaluate its potential as gamma-sensitive material for dosimetric applications;the effect of copper doping on the thermoluminescent sensitivity was investigated using the Cu-Na ion-exchange technique for different concentrations and doping conditions,over a wide dose range of 10 mGy to 100 kGy.The results showed that Cu doping significantly improved the sensitivity of the glasses to gamma radiation.After the ion-exchange,two peaks appeared in the glow curves at approximately 175 and 230°C,respectively,which possibly originated from the Cu^(+) centers,along with a weak TL peak at around 320℃.We also attempted to explain the origin of the observed thermoluminescence by exploiting the Electron paramagnetic resonance(EPR)spectra.The results clearly show quenching of the TL emission with increasing copper concentrations.The present work indicates that the thermoluminescence response of these glasses to gamma rays can be reasonably measured in the range of 0.001-100 kGy.This study also facilitates the understanding of the basic TL mechanism in this glass system.

关键词： Cu-Na ion-exchange silicate glass Thermoluminescence Gamma irradiation Electron paramagnetic resonance

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Effect of rare earths on viscosity and thermal expansion of soda-lime-silicate glass

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Journal of Rare Earths 2010年第S1期28卷 308-311页

作者：王觅堂程金树李梅 Key Laboratory for silicate Materials Science and Engineering of Ministry of Education Wuhan University of Technology School of Material and Metallurgy Inner Mongolia University of Science and Technology

Viscosity of soda-lime-silicate glass doped with rare earth oxides(Pr6O11,Eu2O3,Yb2O3) was investigated by the rotating crucible viscometer,the melting temperature and activation energy for viscous flow of the studied melt were derived on the basis of the Arrhenius Equation,the coefficient of thermal expansion,glass transition temperature and dilatometric softening temperature were also determined with dilatometry,in order to reveal the effects of rare earth elements on the behavior of soda-lime-silicate glass.The results showed that introduction of rare earth oxides decreased the viscosity of soda-lime-silicate glass and melting temperature of corresponding melt,increased coefficient of thermal expansion of soda-lime-silicate glass.The glass transition temperature,dilatometric softening temperature,and melting temperature of soda-lime-silicate glass doped with rare earth oxides increased with increasing cationic field strength of corresponding rare earth ions.

关键词： thermal expansion viscosity silicate glass rare earths

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STUDY ON THE POLYMERIZATION DEGREE OF silicate ANIONS IN THE silicate glass BY TRIMETHYLSILYLATION METHOD

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Journal of Wuhan University of Technology(Materials Science) 1989年第1期4卷 37-46页

作者：朱翠兰林云飞

In the present paper,a mixed solvent method is applied to the trimethylsilylation of silicate glass,and the polymerization degree and its distribution of silicate anions in the silicate glass are measured by means of ... 详细信息

关键词： silicate anions silicate glass Polymerization Trimethylailylation

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Broadband Infrared Luminescence of Ni^2＋ in Petalite-Type Transparent glass Ceramics

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Chinese Physics Letters 2007年第4期24卷 968-970页

作者：冯高锋周时凤张松敏杨护成邱建荣 State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027

Transparent Ni^2＋-doped magnesium aluminosilicate glass ceramics are prepared. The formation of petalite-type crystallites in the glass ceramics is confirmed by x-ray diffraction. Broadband infrared luminescence centred at around 1235nm with full width at half maximum （FWHM） of about 300nm is observed from the Ni^2＋-doped glass ceramics. The observed infrared emission could be attributed to the ^3T2（F） → ^3A2（F） transition of octahedral Ni^2＋ ions in petalite-type crystallites. Theproduct of the fluorescence lifetime and the stimulated emission cross sections is 1.2 ×10-24 cm^2s.

关键词： OPTICAL-PROPERTIES silicate glass SPECTROSCOPY NANOCRYSTALS EMISSION PHASES NICKEL SPINEL

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Broadband Near-Infrared Emission from Transparent Ni^2＋ -Doped Sodium Aluminosilicate glass Ceramics

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Chinese Physics Letters 2006年第11期23卷 2996-2998页

作者：周时凤冯高峰徐时清吴伯涛邱建荣 State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 Institute of Optoelectronic Materials and Devices College of Information Engineering China Jiliang University Hangzhou 310018

Broadband near-infrared emission from transparent Ni^2＋-doped sodium aluminosilicate glass-ceramics is observed. The broad emission is centred at 1290nm and covers the whole telecommunication wavelength region （1100- 1700hm） with full width at half maximum of about 340hm. The observed infrared emission could be attributed to the 3T2（F） → 3A2（F） transition of octahedral Ni^2＋ ions that occupy high-field sites in nanocrystals. The product of the lifetime and the stimulated emission cross section is 2.15 × 10^-24 cm^2s. It is suggested that Ni^2＋- doped sodium aluminosilicate glass ceramics have potential applications in tunable broadband light sources and broadband amplifiers.

关键词： silicate glass NICKEL STATES

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Space-selective Precipitation and Dissolution of Ag and Au Nanoparticles in silicate glasses by Femtosecond Laser Irradiation

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Journal of Wuhan University of Technology(Materials Science) 2007年第B12期22卷 790-793页

作者：胡晓邱建荣 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Science Graduate School of the Chinese Academy of Science Beijing 100039China Department of Material Science and Engineering Zhejiang University

In Ag^＋ and Au^3＋ co-doped silicate glass sample, we realized controllable precipitation and dissolution of Ag and Au nanoparticles. A new method was proposed for separate precipitation of Ag and Au nanoparticles in different areas of the same sample through femtosecond laser irradiation and further annealing; different colors were obtained in the same glass. We also studied the laser dissolution of Ag and Au nanoparticles in the Ag^＋ and Au^3＋co-doped silicate glass. The mechanism of the phenomena we observed was discussed briefly.

关键词： femtosecond laser Ag^＋ and Au^3＋ nanopaticle silicate glass

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2μm Emission Performance of Yb-Ho-Tm Triply-doped silicate glasses Pumped by 980 nm

2μm Emission Performance of Yb-Ho-Tm Triply-doped Silicate ...

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第七届全国稀土发光材料学术研讨会

作者： Gongxun Bai~(a,b) Lili Hu~a Junjie Zhang~(a*) (a Key Laboratory of Materials for High Power Laser,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800,People’s Republic of China) (b Graduate School of Chinese Academy of Sciences, Beijing 100039,People’s Republic of China)

The thermal stablility and 2μm emission properties of Yb-Tm-Ho triply-doped silicate glass are investigated.The characteristic temperatures,absorption spectrum and fluorescence spectrum of the glass are measured.Evident emission near 2μm is observed upon excitation at 980 nm and the fluorescence mechanisms is discussed.Based on the measured absorption spectra,the absorption and emission cross-sections,the Judd-Ofelt parameters and radiative properties are calculated and discussed. The largest spontaneous transition probability for Ho:517→5I8 transition in silicate glass is 58.05s-1. The results indicate that the energy transfer in Yb→Tm,Yb→Ho,Tm→Ho is efficient and the Yb-Tm-Ho triply-doped silicate glass is a promising 2.0μm laser glass material.

关键词： silicate glass Yb-Tm-Ho triply-doped 2μm fluorescence

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