K_α and K_β X－ray energy shift and broadening for Ni~（＋q）ion bombardment on Cu target

Ｋ_αａｎｄＫ_βＸ－ｒａｙｅｎｅｒｇｙｓｈｉｆｔａｎｄｂｒｏａｄｅｎｉｎｇｆｏｒＮｉ~（＋ｑ）ｉｏｎｂｏｍｂａｒｄｍｅｎｔｏｎＣｕｔａｒｇｅｔＬｉＪｉｎｇ－Ｗｅｎ（李景文），ＺｈｏｕＳｈｕ－Ｈｕａ（周书华），ＨｕＡｉ－Ｄｏｎｇ（胡爱东），ＺｅｎｇＸｉ?..     

电子束在MOS结构中的能量沉积与辐照效应

根据电子输运“双群理论”计算出电子在Ｓｉ－ＳｉＯ２材料中的能量沉积。用与硅等２效的外推电离室测定了１．０ＭｅＶ和１．５ＭｅＶ的电子束在ＭＯＳ电容芯片中的吸收剂量。用Ｘ光电子谱、俄歇谱、深能级瞬态谱和Ｃ－Ｖ方法测量分析了ＭＯＳ电容Ｓｉ－ＳｉＯ２材料化学结构，界面态密度和Ｃ－Ｖ曲线在辐射前后的变化，根据理论和实验结果，从辐射剂量学的角度分析讨论了电子能量沉积，电离缺陷和辐射效应间的关系，并提出一个关于     

在MEVVA源中银离子注入单晶6Hα—SiC的研究

室温下在５０ｋＶ电压的ＭＥＶＶＡ离子源中用不同不剂量的银离子注入到单昌６Ｈα－ＳｉＣ中，对未注入和注入的ＳｉＣ样品进行了显微硬度和压坑的扫描电子显微镜观察，并研究了其拉曼谱、卢瑟福背散射谱和Ｘ光电子能谱等。     

电子束辐照聚碳硅烷热解合成SiC陶瓷材料

利用加速器产生的电子束（ＥＢ）在空气中辐射聚碳硅烷（ＰＣＳ），以使之定期关结构，然后经高温热解转化成ＳｉＣ陶瓷。结果表明：在辐照产物中形成了Ｓｉ－Ｃ－Ｓｉ以及Ｓｉ－Ｏ－Ｓｉ等交联结构，热解温度以及热解陶瓷产率都随辐射吸收剂量增加而明显提高。通过ＴＧ－ＩＲ联用分析技术，在热解产物中检测到了低分子量ＰＣＳ以及ＣＨ４等小分子化合物，在吸收剂量高于２．３ＭＧｙ时，ＰＣＳ主要通过析出ＣＨ４而热解成ＳｉＣ。     

Synthesis,labelling and animal experiments of the derivative of phenylpentadecanoic acid（CACPPA）

Ｓｙｎｔｈｅｓｉｓ，ｌａｂｅｌｉｎｇａｎｄａｎｉｍａｌｅｘｐｅｒｉｍｅｎｔｓｏｆｔｈｅｄｅｒｉｖａｔｉｖｅｏｆｐｈｅｎｙｌｐｅｎｔａｄｅｃａｎｏｉｃａｃｉｄ（ＣＡＣＰＰＡ）ＷｕＣｈｕｎＹｉｎｇ，ＪｉＳｈｕＲｅｎ，ＦａｎｇＰｉｎｇ，ＺｈｏｕＸｉａ...     

A COMPLEX-TYPE FOCUSSED MAGNETRON FOR SPUTTERING

ＡＣＯＭＰＬＥＸ－ＴＹＰＥＦＯＣＵＳＳＥＤＭＡＧＮＥＴＲＯＮＦＯＲＳＰＵＴＴＥＲＩＮＧ￥ＺｈｅｎｇＳｉｘｉａｏ（郑思孝）（ＩｎｓｔｉｔｕｔｅｏｆＮｕｃｌｅａｒＳｃｉｅｎｃｅａｎｄＴｅｃｈｎｏｌｏｇｙ,ＳｉｃｈｕａｎＵｎｉｖｅｒｓｉｔｙ,Ｃｈｅｎｇｄｕ...     

高能Ar离子辐照单晶Si引起的损伤研究

用１１２ＭｅＶ Ａｒ离子以５０Ｋ的低温辐照了〈１１１〉取向的单晶Ｓｉ后在室温下采用Ｘ射线光电子谱（ＸＲＳ）、电子顺磁共振（ＥＰＲ）和红外光吸收（ＩＲ）技术对样品进行了分析。ＸＰＳ分析结果表明，表面处Ｓｉ以单元素和ＳｉＯ２两种形式共存，辐照对这两种形式Ｓｉ的２ｐ轨道电子的结合能影响较小。ＥＰＲ测量结果显示，Ｓｉ中的损伤产生明显地依赖于辐照剂量，当剂量为１．０×１０＾１４－１．８×１０＾１４ｃｍ＾－２     

C／S数据处理系统及其在DECnet上的实践

本文介绍了ＶＡＸ－ＰＣ构成的异构ＤＥＣｎｅｔ网络中实施Ｃ／Ｓ数据处理系统的一般方法，并以一个Ｃ／Ｓ方式聚变实验数据处理系统为例，详细说明了ＶＡＸ－ＰＣ在ＤＥＣｎｅｔ环境下的Ｃ／Ｓ系统的实现方法。通过对ＶＡＸ集中式处理系统与Ｃ／Ｓ方式处理系统的性能评价说明了Ｃ／Ｓ方式的优越性。     

光敏有机硅聚合物的低压力等离子体沉积

单基取代的有机硅前身的等离子体沉积能够导致一些层含有广延的Ｓｉ－Ｓｉ键合的主键。娄这些膜同时暴露于紫外线和氧时，Ｓｉ－Ｓｉ健裂开，氧进入形成Ｓｉ－Ｏ－Ｓｉ聚合物链。证明这些膜可以用低压力直流等离子体源沉积。由Ｘｅ和甲基硅烷的电子激发产生了等离子体，而用一轴向磁场约束基片表面附近的等离子体。等离子体粒子能量较低（１０－２０ｅＶ），而且分散小。这样限制了不希望有的气相反应的产生。在低压力及相应的低沉积     

Micro－PIXE analysis of trace element composition and their distribution in minerals of mantle peridotite

Ｍｉｃｒｏ－ＰＩＸＥａｎａｌｙｓｉｓｏｆｔｒａｃｅｅｌｅｍｅｎｔｃｏｍｐｏｓｉｔｉｏｎａｎｄｔｈｅｉｒｄｉｓｔｒｉｂｕｔｉｏｎｉｎ　ｍｉｎｅｒａｌｓｏｆｍａｎｔｌｅｐｅｒｉｄｏｔｉｔｅＣｈｅｎＹｏｕ－Ｈｏｎｇ（陈友红），ＺｈｕＪｉｅ－Ｑｉｎｇ（朱节清...     

Vapor Species over Na2O-B2O3-SiO2-Cs2O Glass

Methods for suppression and control of the axisymmetric vertical positional instability are described on the basis of conceptural design studies with the International Tokamak Reactor (INTOR). The shell effect is well known to be useful for suppression of the fast instability. Here shell structures are presented and their usefulness is assessed. Included in the assessments are required modellings of the plasma current for determination of mutual inductances between the plasma and the inductive components around it. Three kinds of models are described and their features are compared to the shell effect. Two kinds of simplified reactor structures are described and studied by comparing them with some control characteristics of the slow instability by a pair of control coils. Their structures are selected so as to result in different shell effects between them, and are consequently found to produce different capacities of power supply, too.     

Application and development of the pulsed plasma thruster

The application and development of pulsed plasma thrusters(PPTs) in recent years are reviewed in this paper. The advantages of PPTs are discussed. The schematics, propulsion performance parameters and key physical processes of PPTs are described. Some representative PPT products and flight systems developed in recent years are presented to show the performance of the PPT.Studies about how electrode structures, discharge circuits, propellant materials, energy discharge method, propellant feed method, ignition method and number of thruster heads influence the PPT performance are presented and analyzed. The ignitor design method, ignition process and propellant carbonization are introduced to discuss the reliability and lifetime issues in PPTs. The modeling methods of the discharge circuit, as well as ablation, ionization and acceleration in PPTs are presented. Finally, the application of PPTs in the future is analyzed and some suggestions for PPT development are proposed.     

Extended MHD Modelling with the Ten-Moment Equations

High-order moment fluid equations for simulation of plasmas are presented. The ten-moment equations are a two-fluid model in which time dependent equations are used to advance the pressure tensor. With the inclusion of the full pressure tensor Finite Larmor Radius (FLR) effects are captured. Further, Hall-effects are captured correctly by including the full electron momentum equation. Hall and FLR effects are important to understand stability of compact toroids like Field Reversed Configurations (FRCs) and also to detailed understanding of small scale instabilities in current carrying plasmas. The effects of collisions are discussed. Solutions to a Riemann problem for the ten-moment equations are presented. The ten-moment equations show complex dispersive solutions which come about from the source terms. The model is validated with the GEM fast magnetic reconnection challenge problem.     

两种变截面的高压纳秒电阻分压器

文章介绍了一种具有完全横向电容补偿功能的特殊结构的电阻分压器——扇形分压器,以及另一种同时具有横向电容补偿和减小趋肤效应功能的锥形薄壁分压器,用于测量纳秒上升沿的脉冲高电压。简述了它们的补偿原理和结构。刻度表明,它们具有良好的响应特性,并给出了它们在脉冲加速器上测到的电压波形。     

北京G120型Q3D磁谱仪焦面探测器系统

根据HI－13串列加速器及Q3D磁谱仪的特点和物理研究课题的要求，提出了与谱仪配用的焦面探测器的重要技术性能的要求。对磁谱仪和焦面探测器的联合系统的离子鉴别方法予以较详细的讨论。提出了模型设计的参数，并估算了各种可能的贡献及最后可获得的性能及修正方法。最后给出了运行中的轻、重离子探测器的性能的实验结果。     

蒙特卡罗方法在器件屏蔽封装中的应用

用1.5MeV的电子对几种封装材料进行辐照,得到它的剂量深度分布曲线．同时用Monte-Carlo方法计算进行模拟,两着符合较好。高Z材料．如钨、钽是最好的屏蔽初级电子的材料．但从实用性设计考虑,这些材料都是导体,不利于对特殊结构器件进行包封,又设计了几种复合材料．这既达到了屏蔽的效果,又可以绝缘,可以直接对器件进行封装。建立的理论模拟方法,为预估二次封装器件的空间辐射环境抗总剂量能力提供了一种有效的方法。     

The pumping performances of the turbomoleculae pump simulated by direct simulation monte carlo method

Turbomolecular pumps (TMPs) are used extensively in several highly important areas of industry and research. The performances of TMP are evaluated by maximum throughput and maximum pressure ratio. In this paper, they are investigated by DSMC method. A 3D analysis in a rotating reference frame is proposed to simulate this flow field. Considering the Coriolis and centrifugal accelerations, the equations about the molecular velocities and position are deduced. The VSS model and NTC collision schemes are used to calculate the intermolecular collisions. The diffuse reflection is employed on the molecular reflection from the surfaces of boundary. The procedures for establishment of the correct collision rate are based on the cells, while individual collision pairs are chosen from the sub-cells. The pump performances of one stage TMP under the different kinds of gas, different heights, and different blade angles are simulated and the results are analyzed. Numerical results agree well with the existing experiment data.     

AFA3G定位格架条带技术研究

介绍了目前国外燃料组件高燃耗、长周期、低泄漏的发展方向;阐述了研制高燃耗燃料组件定位格架的必要性和可行性。提出了定位格架研究中的主要技术指标、研究方案和实施途径。明确了定位格架条带的研制内容和模具制造中的技术难点;给出了总体实施方案,并确定了研究目标及技术性能指标。最后对格架研制中的关键技术和实施方案及格架研制中的相关配套条件进行了分析。     

高能P-P对撞中的μ子探测——模拟探测

对一种适用于未来高能P-P对撞机上的探测器模型和质心能在16和40TeV的P-P对撞事例中进行了模拟。并把模拟的物理事例引进了模拟的探测器。 本文重点叙述了如何把物理事例和探测器衔接起来,如何利用该模拟系统“探测”粒子和测量它们的物理量。特别是对μ子的探测和测量。     

放射性气溶胶监测仪探测限检测方法研究

研究了放射性气溶胶监测仪的检测方法，即天然本底检测法和衰变检测法。两种方法不仅可检测监测仪的探测限，而且对各种监测仪探测指标的物理意义能给以正确判断。介绍了检测方法，讨论了方法必须遵循的规范性要求。