双束注入的晶格应变

用双晶ｘ射线衍射仪测出了注入能量为１８０ｋｅＶ,不同注入剂量和不同退火温度的Ｎ＾＋＋Ａｓ＾＋双束离子注入的摇摆曲线。利用离子注入的多层模型,试探应变函数和ｘ射线衍射的运动学理论,借助于计算机,用Ｌｅｖｅｎｂｅｒｇ－Ｍａｒｕａｒｄｔ最优化法拟合实验曲线,给出了不同剂 退火温度晶格应变随注入深度的变化。     

C60薄膜的离化团族束沉积及离子掺杂

用离化团簇束（ＩＣＢ）沉积法在石英玻璃和云母衬底上形成了Ｃ６０薄膜,ＸＲＤ测试表明膜呈多晶结构,原位电阻测试表明膜的室温电阻率超过１０＾４Ωｃｍ,具有负的电阻温度系数。用８０ｋｅＶ Ｐ＾＋,ＢＢｒ３＾＋,Ａｒ＾＋和Ｈｅ＾＋对Ｃ６０膜作剂量范围为０￣１０＾１６ｃｍ＾－２的离子注入,Ｃ６０膜的电阻率随注入剂量增加而急剧下降,磷注入具有ｎ型掺杂作用,离子与Ｃ６０分子的相互作用导致Ｃ６０分子分裂,引起薄膜     

Si^＋和Ti^＋注入H13钢注入层微观结构的研究

利用透射电子显微镜，分析了Ｓｉ＾＋（１００ｋｅＶ，５×１０＾１７ｃｍ＾－２）和Ｔｉ（１００ｋｅＶ，３×１０＾１７ｃｍ＾－２）注入Ｈ１３钢注入微观结构的变化，结果表明，离子注入后板条状马氏体完全消失，Ｓｉ＾＋注入导致注入层晶粒细化，而Ｔｉ注入导致注入层非晶化。     

As^＋注入Si中的晶格应变

本文借助于双晶Ｘ射线衍射和椭圆偏光谱研究了注入能量为１６０ｋｅＶ,不同剂量６和不同退火温度（５００－７００℃）Ａｓ＾＋注入Ｓｉ的性质。用Ｘ射线衍射的动力学理论和多层模型拟 了双晶衍射的摇摆曲线,得到了晶格应变随深度的分布。     

用中等能量离子辐射方法研究C60膜结构变化

在２００ｋｅＶ重离子加速器上,使用１２０ｋｅＶ的Ｈ＋,Ｈｅ＋,Ｎ＋,Ａｒ＋等离子对Ｃ６０分子薄膜进行了辐射处理,对辐射后Ｃ６０膜的Ｒａｍａｎ谱进行了系统地分析研究．离子辐射会影响Ｃ６０薄膜的结构,不同的辐射注入剂量会使Ｃ６０分子薄膜产生聚合和非晶碳化现象,这一现象的产生与辐射离子的剂量大小有关,并存在一剂量阈值．研究表明Ｃ６０分子的聚合与辐射碰撞过程中的电子能损有关,而Ｃ６０薄膜非晶碳化现象则主要受核能损的影响     

GCr15钢和40Cr钢N＋注入后表面残余应力研究初探

本文研究了Ｎ＋注入ＧＣｒ１５钢和４０Ｃｒ钢表面残余应力的变化及沿层深的分布情况。结果表明：Ｎ＋注入后，材料表面残余应力（均为压应力）均有增加趋势，在近表层几个μｍ内增加较明显，并且随着注入能量和剂量的不同，表面残余应力增加趋势亦不同，离子注入使材料表面残余压应力的增加，有利于改善材料的摩擦学性能。     

6—30keV单电荷离子与H2分子碰撞的单电子剥离截面的测量

用增长率方法测量了６－３０ｋｅＶＨｅ＾＋，Ｎｅ＾＋，Ａｒ＾＋，Ｋｒ＾＋，Ｘｅ＾＋及Ｃｌ＾＋离子与Ｈ２分子碰撞的单电子剥截面，Ｈｅ＾＋的截面数量与他人数据一致，其他的截面数据在此之前未见报道。     

氢氧注入在GaAs器件中的应用

从３个器件说明氢，氧注入在不同方面的应用：（１）用氧注入制备高质量Ｎ－ＳＩ－Ｎ埋层，应用于源栅面对ＭＥＳＦＥＴ中，克服源、栅、漏引线在同一平面交错带来的工艺及寄生效应；（２）用氢注入了Ｐ＾＋－Ｎ＾－－Ｎ＾＋层的Ｎ＾－层，减小ＨＢＴ的ＢＣ结电容，以提高其高频特性；（３）用氢、氧注入制作平面结构的ＨＰＴ，以减小复合电流，提高光电增益，其中尤其强调了选择离子注入的能量、注量及退火温度。     

Mg^＋,Nb^＋离子注入对SnO2薄膜晶粒热稳定性的影响

采用Ａｒ＾＋离子溅射方法将３００ｎｍ ＳｎＯ２薄膜沉积在Ｓｉ片上，分别对膜层进行６０ｋｅＶ，５×１０＾１６ｃｍ＾－２Ｍｇ＾＋离子注入和１００ｋｄＶ，６×１０＾１６ｃｍ＾－１Ｎｂ＾＋离子注入，对未注入，Ｍｇ＾＋离子注入，Ｎｂ＾＋离子注入３种薄膜进行５００℃，４ｈ退火处理．     

C^＋注入Si中形成SiC的初步研究

将Ｃ＾＋离子注入硅衬底,衬底温度约为４００℃,Ｃ＾＋离子引出电压为４５ＫｅＶ注入剂量为５＊１０＾１７ｃｍ＾－２。经高温退火形成硅沉淀,利用Ｘ射线光电子能谱,俄歇电子能谱及傅立叶变换红外吸收光谱,对所形成的碳化硅埋层作了初步的分析。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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