材料期刊网

PREPARATION OF B-N FILMS BY ION BEAM ASSISTED DEPOSITION

JIANG Hai TAO Kun LI Hengde Tsinghua University , Beijing , China lecturer , Department of Materials Science and Engineering , Tsinghua University , Beijing 100084 , China

金属学报(英文版)

BN films,synthesized by ion beam assisted deposition,were analysed by RBS,AES, IR spectra and TEM.Formatiom of c-BN phase was shown not only by IR spectra at absorption peak of 1100 cm~(-1),but also by electron diffraction pattern.The results of AES demonstrate an effect of N~+ implantation near the film surface.The deposited films consist of three layers,i.e.,ion implantation layer,film layer and mixed intermediatelayer, according to the difference of concentration.The micro-Knoop hardness of the film is 25—35 GPa.

关键词: ion beam assisted deposition , null

RF deflecting cavity design for bunch length measurement of photoinjector at Tsinghua University

中国物理C

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Design of an MeV ultra-fast electron diffraction experiment at Tsinghua university

中国物理C

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TW Laser system for Thomson scattering X-ray light source at Tsinghua University

中国物理C

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CSD-La3TaO7薄膜外延生长行为

王耀 , 李成山 , 于泽铭 , 冯建情 , 金利华 , 王辉 , 张平祥

稀有金属

研究CSD技术制备La3TaO7 (LTO)缓冲层过程中前驱液的热分解行为以及热处理工艺对薄膜取向生长的影响,通过选取恰当的LTO前驱液以及快速升温热处理的方法最终获得了良好c轴织构的LTO薄膜.

关键词: 涂层导体 , 缓冲层 , 化学溶液沉积

Generating 10-40 MeV high quality monoenergetic electron beams using a 5 TW 60 fs laser at Tsinghua University

HUA Jian-Fei , YAN Li-Xin , PAI Chih-Hao , ZHANG Chao-Jie , LI Fei , WAN Yang , WU Yi-Peng

中国物理C doi:10.1088/1674-1137/39/1/017001

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Bi3+,Eu3+,Tb3+掺杂Lu3TaO7的发光性能研究

刘文鹏 , 张庆礼 , 杨华军 , 周鹏宇 , 孙敦陆 , 高进云 , 谷长江 , 罗建乔 , 王迪 , 殷绍唐

量子电子学报 doi:10.3969/j.issn.1007-5461.2011.02.018

采用固相反应法制备了Bi3+、Eu3+、Tb3+掺杂的Lu3TaO7.测量了样品的X射线衍射谱、激发和发射光谱及荧光衰减曲线.三种离子掺杂的Lu3TaO7均呈现出强的荧光发射,其中Bi3+具有峰位在431 nm处的一强发射宽带,衰减寿命为16.8μs,Eu3+、Tb3+则表现出稀土离子的特征锐发射峰,衰减寿命分别为1.26 ms和1.20 ms.因此,它们均是具有潜在应用前景的重闪烁体材料.

关键词: 材料 , 闪烁体 , Lu3TaO7 , 发光

University of Science and Technology Beijing

JIA Shizhen University of Science and Technology Beijing , China.

材料科学技术（英文）

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ON SPINODAL BOUNDARIES OF Al-Li ALLOYS

WEI Yinghui , WANG Xiaotian (School of Materials Scince and Engineering , Xi'an Jiaotong University , Xi'an 710049 , China Manuscript received 10 Mareh , 1994)

金属学报(英文版)

The spinodal decomposition can occur in Al-Li alloys containing 5.8-14.2 at.% Li at room temperature. The modutated structure wavelength is approximately 3.1 nm for com mercial Al-LI alloys. The limit composition of the miscibility gap is 3.66 -16.06 at.%Li at 298 K. The highest temperature of the miscibility gap is 377 K.

关键词: : Al-Li alloy , null , null

大爆炸核合成相关的8Li(d, p)9Li反应截面测量

李志宏 , 柳卫平 , 白希祥 , 郭冰 , 连钢 , 颜胜权 , 王宝祥 , 陆昀 , 曾晟 , 苏俊

原子核物理评论 doi:10.3969/j.issn.1007-4627.2005.01.006

利用8Li次级束测量了质心系能量7.8 MeV 2H(8Li, 9Li)1H反应的角分布, 导出了8Li(d, p)9Li反应的天体物理S因子及9Li→8Li+n虚衰变的渐近归一化系数.

关键词: 8Li(d,p)9Li反应 , 角分布 , 天体物理S因子 , 渐近归一化系数