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Fibre optic distributed scattering sensing system:perspectives and challenges for high performance applications

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仪器仪表学报 2007年第8期28卷 1345-1352页

作者： Marc nikl.s Omnisens sA Riond-Bosson 3CH-1110 MorgesSwitzerland

As fiber optic distributed scattering sensing systems are providing innovative solutions for the monitoring of large structures,the comparison of different techniques and solutions is difficult because of the lack of standardized specifications and the difficulty associated to the characterization of such *** article presents a tentative definition of performance specifications and qualification procedures applicable to fiber optic distributed sensing systems aiming at providing clear guidelines for their design,specifications,qualification,application and selection.

关键词：纤维光学传感器分布式散射传感系统发展前景应用布里渊散射空间分辨率温度

Development and prospects of garnet ceramic scintillators:A review

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Journal of Advanced Ceramics 2022年第12期11卷 1825-1848页

作者： Danyang ZHU Martin nikl Weerapong CHEWPRADITKUL Jiang LI Key Laboratory of Transparent Opto-functional Inorganic Materials Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China Center of Materials science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Institute of Physics The Czech Academy of SciencesPrague 16200Czech Republic Department of Physics King Mongkut’s University of Technology ThonburiBangkok 10140Thailand

Garnet ceramic scintillators are a class of inorganic scintillation materials with excellent overall *** flexibility of cation substitution in different lattice positions leads to tunable and versatile properties and a wide range of *** paper starts with an overview of the development history of the inorganic scintillation materials,followed by a description of major preparation methods and characterization of garnet scintillation *** progress obtained in recent years consisting in applying the band-gap and defect engineering strategies to the garnet scintillation ceramics is ***,the respective problems in the preparation and performance of multicomponent garnet single crystals and ceramics and the effective solutions are *** garnet scintillation ceramics with the highest application potential are summarized,and the future development directions are proposed.

关键词： garnet ceramics inorganic scintillators single crystals scintillation performance

Compositional regulation of multi-component GYGAG:Ce scintillation ceramics:self-sintering-aid effect and afterglow suppression

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Journal of Advanced Ceramics 2023年第10期12卷 1919-1929页

作者： Danyang Zhu Lexiang Wu Alena Beitlerova Romana Kucerkova Weerapong Chewpraditkul Martin nikl Jiang Li Transparent Ceramics Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China Center of Materials science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Institute of Physics of the Czech Academy of sciences Prague 16200Czech Republic King Mongkut’s University of Technology Thonburi Bangkok 10140Thailand

(Gd,Y,Ce)_(3)(Y_(x)Ga_(1−x))_(2)GaAl_(2)O_(12)(GYGAG:Ce)scintillation ceramics with different Y excess,where x=0.005−0.08,were fabricated by the solid-state reaction *** effects of stoichiometry on the phase composition,optical quality,and microstructure of GYGAG:Ce ceramics were ***:Ce ceramics have a pure garnet phase and obtain good in-line transmittance when xss leads to the creation of the secondary *** change of x value influences the sintering behavior of the GYGAG:Ce ceramics:The excess of Y works as the self-sintering aid and significantly reduces the sintering temperature of *** x=0.01–0.04,the X-ray excited luminescence(XEL)spectra and light yields of GYGAG:Ce ceramics are *** fast scintillation decay time and afterglow intensity of GYGAG:Ce ceramics show a slight decrease with increasing x ***,additional 50–500 ppm MgO and 100–500 ppm CaO were introduced to the GYGAG:Ce ceramic with x=0.04,and both were found to significantly increase the fast scintillation component and reduce the afterglow intensity by two orders of magnitude to 0.01%after X-ray cut-off.

关键词： GYGAG:Ce ceramics multi-component garnet compositional regulation afterglow

热等静压烧结制备细晶粒 Ce,Y:srHfO_(3) 闪烁陶瓷

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无机材料学报 2021年第10期36卷 1118-1124页

作者：朱丹阳钱康陈肖朴胡泽望刘欣李晓英潘裕柏 MIHÓKOVÁEva nikl Martin 李江中国科学院上海硅酸盐研究所透明光功能无机材料重点实验室上海201899 中国科学院大学材料科学与光电工程中心北京100049 上海师范大学物理系上海200234 捷克科学院物理研究所捷克布拉格16200

Ce:srHfO_(3)陶瓷因具有高密度和高有效原子序数,对高能射线具有很强的阻止能力。同时,Ce:srHfO_(3)陶瓷还具有快衰减和高能量分辨率等优异的闪烁性能,引起了研究人员的广泛关注。由于传统的烧结方法难以实现非立方结构Ce:srHfO_(3)陶... 详细信息

Ce:srHfO_(3)陶瓷因具有高密度和高有效原子序数,对高能射线具有很强的阻止能力。同时,Ce:srHfO_(3)陶瓷还具有快衰减和高能量分辨率等优异的闪烁性能,引起了研究人员的广泛关注。由于传统的烧结方法难以实现非立方结构Ce:srHfO_(3)陶瓷的透明化,本研究采用真空长时烧结和短时真空预烧结合热等静压烧结(Hot Isostatic Pressing,HIP)方法制备Ce,Y:srHfO_(3)陶瓷。以金属氧化物和碳酸盐为原料,1200℃下煅烧8 h可以获得平均粒径为152 nm的纯相Ce,Y:srHfO_(3)粉体。1800℃真空烧结20 h获得平均晶粒尺寸为28.6μm的不透明的Ce,Y:srHfO_(3)陶瓷,而两步烧结法可以制备光学透过率良好的Ce,Y:srHfO_(3)陶瓷。本研究详细分析了陶瓷致密化过程中微结构的演变,探究了预烧结温度对Ce,Y:srHfO_(3)陶瓷密度、显微结构和光学透过率的影响。真空预烧(1500℃×2 h)结合HIP后处理(1800℃×3 h,200 MPa Ar)所获得的Ce,Y:srHfO_(3)陶瓷在800 nm处的最高直线透过率为21.6%,平均晶粒尺寸仅为3.4μm。在X射线激发下,Ce,Y:srHfO_(3)陶瓷在400 nm处产生Ce3+5d-4f发射峰,其XEL积分强度比商用锗酸铋(BGO)晶体高3.3倍,Ce,Y:srHfO_(3)陶瓷在1μs门宽下的光产额约为3700 ph/MeV。良好的光学和闪烁性能可以拓宽Ce,Y:srHfO_(3)陶瓷在闪烁探测领域的应用。

关键词： Ce,Y:srHfO_(3)陶瓷热等静压烧结微观结构晶粒细化闪烁性能

Gd^(3+)Tb^(3+)能量转移与Tb^(3+)自敏化效应对重金属锗酸盐玻璃发光性能的影响

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功能材料 2005年第1期36卷 109-111页

作者：饶金华杨云霞袁双龙张俊标陈国荣 s.Baccaro A.Cecilia M.nikl 华东理工大学材料科学与工程学院无机材料研究所上海200237 意大利国家能源环境新技术研究中心(ENEA)电离辐照实验室(FIS/ION) 捷克国家科学院物理研究所光学实验室

研究了一组Tb3+掺杂重金属锗酸盐玻璃的发光特性。玻璃样品的 X 射线激发发射光谱结果显示,玻璃基质中由 Gd3+ 离子向发光中心 Tb3+ 的能量转移机制以及在一定浓度范围内 Tb3+ 之间的交叉弛豫过程对玻璃的发光性能有重要影响。前者表现... 详细信息

研究了一组Tb3+掺杂重金属锗酸盐玻璃的发光特性。玻璃样品的 X 射线激发发射光谱结果显示,玻璃基质中由 Gd3+ 离子向发光中心 Tb3+ 的能量转移机制以及在一定浓度范围内 Tb3+ 之间的交叉弛豫过程对玻璃的发光性能有重要影响。前者表现在Gd3+紫外发射光的减弱及 Tb3+ 绿发射光的增强,后者则显示Tb3+在一定浓度范围内所特有的自敏化效应,使其蓝发射光减弱、绿发射光增强。第 3 种稀土离子La3+的引入对发光中心 Tb3+ 离子具有分离效应,使Tb3+之间的交叉弛豫概率降低,蓝发射光增强。

关键词：重金属氧化物锗酸盐玻璃闪烁体能量转移交叉弛豫 X射线激发发射光谱

Development of novel rare earth doped fluoride and oxide scintillators for two-dimensional imaging

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Journal of Rare Earths 2011年第12期29卷 1178-1182页

作者： A.Yoshikawa T.Yanagida Y.Yokota K.Kamada N.Kawaguchi K.Fukuda A.Yamazaki K.Watanabe A.Uritani T.Iguchi G.Boulon M.nikl Institute for Materials Research Tohoku University New Industry Creation Hatchery Center Tohoku University R&D Center Tokuyama CorporationShibuya 3-ChomeShibuya-ku Nagoya University Furo-choChikusa-ku Physical Chemistry of Luminescent Materials(LPCML) University of Lyon Institute of Physics As CR

Two topics were focused. The first one was about the gamma-ray scintillator, Pr^3＋：Lu3Al5O12 （LuAG）. The second one was about neutron scintillator, Ce^3＋：^6LiCaAlF6 and Eu^2＋：^6LiCaAlF6 （^6LiCAF）. Those scintillators have been developed very recently for modem imaging applications in the medical and homeland security fields. In both cases, the rare earth ions are playing the crucial role as emission centers. Pr^3＋ in LuAG provided fast 5d→4f transition providing noticeably shorter decay time than that of Ce^3＋. Among several candidate hosts, LuAG showed the best performance. Bulk crystal growth, basic scintillation properties, two-dimensional gamma-ray imaging and positron emission mammography （PEM） application were demonstrated. Due to the international situation, the homeland security was compromized by illicit traffic of explosives, drugs, nuclear materials, etc. and the ways to its improvement became an important R＆D topic. For this purpose the Ce and Eu doped LiCAF appeared competitive candidates. Especially, when substitution of 3He neutron detectors was considered, the discrimination ability of gamma-ray from alpha-ray was important. Bulk crystal growth, basic scintillation properties and two-dimensional neutron imaging were demonstrated.

关键词： scintillator gamma-ray detection neutron detection oxide fluoride Ce, Eu rare earth

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Ce3+对磷酸盐闪烁玻璃耐辐射性能的影响

功能材料 2004年第Z1期35卷 303-306页

作者：赵东辉夏方杨云霞陈国荣 s Baccaro A Cecilia M.nikl 华东理工大学材料学院无机材料研究所上海200237 ENEA-FIs/ION Via Anguilla rese 30100060 S.Maria di Ga leria(Roma)Italy Institute of Physics AsCR Cukrovarnicka 1016253 PragueCzech Republic

研究了空气气氛下制备的掺Ce3+磷酸盐闪烁玻璃.XPs分析结果显示,玻璃网络结构中的铈离子以低化合价(三价)形式存在.分别测试了含Ce3+及不含Ce3+玻璃样品在辐射前及经特定剂量辐射后的紫外可见透过光谱.实验结果表明,含Ce3+玻璃在大于39... 详细信息

研究了空气气氛下制备的掺Ce3+磷酸盐闪烁玻璃.XPs分析结果显示,玻璃网络结构中的铈离子以低化合价(三价)形式存在.分别测试了含Ce3+及不含Ce3+玻璃样品在辐射前及经特定剂量辐射后的紫外可见透过光谱.实验结果表明,含Ce3+玻璃在大于390nm波长处的辐射诱导吸收带消失或明显减弱.通过计算样品的辐射诱导吸收系数μ发现Ce3+离子的引入有效提高了磷酸盐闪烁玻璃的抗辐射能力.

关键词：闪烁材料磷酸盐玻璃辐照 Ce3+掺杂

Na_2O-Gd_2O_3-P_2O_5闪烁玻璃的辐照损伤及热漂白性能

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硅酸盐通报 2002年第2期21卷 3-7页

作者：陈国荣 s Baccaro M nikl A Cecilia 杜永娟汪山华东理工大学无机材料系 ENEA-TEC/IRR ViaAnguillarese30100060S.MariadiGaleria(Rome)Italy InstituteofPhysicsAsCR Cukrovarnicka1016253PragueCzechRepublic

讨论了掺稀土离子铈 (Ce3 + )和铽 (Tb3 + )的Na2 O -Gd2 O3 -P2 O5系统闪烁玻璃的辐照损伤特性及热处理效应。对不同组成及不同掺杂浓度的玻璃样品进行了不同剂量的60 Co辐照处理。采用紫外和可见透射光谱及根据实测结果计算的辐照诱... 详细信息

讨论了掺稀土离子铈 (Ce3 + )和铽 (Tb3 + )的Na2 O -Gd2 O3 -P2 O5系统闪烁玻璃的辐照损伤特性及热处理效应。对不同组成及不同掺杂浓度的玻璃样品进行了不同剂量的60 Co辐照处理。采用紫外和可见透射光谱及根据实测结果计算的辐照诱导吸收系数比较了辐照前后玻璃样品的光学透过性能。掺Ce3 + 玻璃样品显示出优良的抗辐照特性 ,其原因在于可变价的铈离子具有吸收由电离产生的自由电子和 /或空穴的能力。该系统玻璃试样具有良好的热漂白特性 ,经 2 5 0℃。

关键词：稀土掺杂光学透过性能 Na2O-Gd2O3-P2O5 闪烁玻璃辐照损伤热漂白性能

Ce3+掺杂磷酸盐玻璃的紫外与可见光学性能

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功能材料 2004年第Z1期35卷 286-288页

作者：张俊标饶金华袁双龙杨云霞陈国荣 s.Baccaro A.Cecilia M.nikl 华东理工大学材料科学与工程学院无机材料研究所上海200237 ENEA-FIs/ION Via Anguillarese 30100060 S.Maria di Galeria(Roma)Italy Institute of Physics AsCR Cukrovarnicka 1016253 PragueCzech Republic

研究了基于钆和钠磷酸盐Ce3+掺杂磷酸盐玻璃的紫外吸收和发射光谱.与不含Ce3+的磷酸盐玻璃相比,掺Ce3+的样品紫外吸收边向长波方向移动,发射光谱也随玻璃组成的变化发生相应地红移.该现象的解释基于玻璃光碱度的变化,光碱度不仅与碱金... 详细信息

研究了基于钆和钠磷酸盐Ce3+掺杂磷酸盐玻璃的紫外吸收和发射光谱.与不含Ce3+的磷酸盐玻璃相比,掺Ce3+的样品紫外吸收边向长波方向移动,发射光谱也随玻璃组成的变化发生相应地红移.该现象的解释基于玻璃光碱度的变化,光碱度不仅与碱金属含量有关,也与O/O值有关.O/P值与PO4单元中的非桥氧数成比例,并且对玻璃的整体光碱度起着主要的决定作用.

关键词：闪烁材料磷酸盐玻璃 Ce掺杂光碱度