Magnetic field enhanced radio frequency ion source and its application for Siincorporation diamond-like carbon film preparation

Various ion sources are key components to prepare functional coatings,such as diamond-like carbon(DLC)films.In this article,we present our trying of surface modification on basis of Si-incorporation diamond-like carbon(Si-DLC)produced by a magnetic field enhanced radio frequency ion source,which is established to get high density plasma with the help of magnetic field.Under proper deposition process,a contact angle of 111°hydrophobic surface was achieved without any surface patterning,where nanostructure SiC grains appeared within the amorphous microstructure.The surface property was influenced by ion flow parameters as well as the resultant surface microstructure.The magnetic field enhanced radio frequency ion source developed in this paper was useful for protective film applications.     

Properties of intermediate-frequency vacuum arc in sinusoidal curved contact and butt contact

In this report,two new contact structures of a vacuum interrupter with a sinusoidal curved surface are proposed to improve the capability by increasing the surface area.The experimental investigation of vacuum arc at intermediate frequency(360-800 Hz)was conducted and the results were compared with a butt contact with the same contact diameter(41 mm)and the same material.By analyzing the arc behavior,arc voltage characteristics,arc energy,current interrupting capacity,ablation of the anode contact and condensation of the arc products at a 3 mm gap,the differences in their vacuum arc characteristics were determined.The correlations of their arc energy with the amplitude and the frequency of the current were also achieved.Analysis suggests that the ruled curved contact has strong application potentiality because of its low arc energy,low arc voltage noise and arc voltage peak,light ablation on the surface of the anode contact and high interrupting capacity.     

不断变化、充满挑战的景象

无论在贫国还是在富国,能源问题都是一个快速上升的政治问题。油价已超过100美元一桶。全球变暖归因到煤及其他化石燃料。生物燃料受到更加密切的关注,包括对粮食生产和供应的影响。核能再一次接受人们的辩论。     

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民意测验表明,与几年前相比,英国公众离接受新建核电站更近了。然而,这种支持依然很脆弱。核能在英国的声望在21世纪的头几年和现在有了很大的提高,除了顽固反对核能的少数派外,公众普遍接受新建核电站,以迎接能源安全和气候变化的双重挑战,但是新建核电站的这种必要性要以合适的方式向公众提出。核工业一路走     

茜素红的辐射降解研究

用60Co γ射线辐照茜素红水溶液,研究该染料的辐射降解特性.通过对辐照前后茜素红的紫外可见光谱、脱色率、总有机碳(Total organic carbon,TOC)去除率的研究.探讨了吸收剂量、初始浓度、溶液pH值、H2O2加入量、在不同气体饱和条件下对茜素红溶液降解和矿化效果的影响.结果表明,辐射技术能有效降解茜素红染料,在空气饱和双氧水浓度为4mmol/L的条件下,吸收剂量为7.5kGy时,茜素红脱色率可达98%,TOC去除率可达70%.     

国外最新消息

美国NRG能源公司将建造更多的核电厂美国NRG能源公司执行总裁David Crane表示,公司将拥有更多的核电厂,包括计划在得克萨斯州建造的两座机组。(编译自路透社2007年11月6日报道)     

《原子能科学技术》征稿简则

须包括题目、作者姓名、作者单位、城市名、省名和邮政编码,并应写成叙述性文摘(含有研究目的、方法、结果和结论);关键词3～8个。3)文稿应采用阿拉伯数字进行分级编号。引言不编号,也不写引言字样。4)基金项目名称及项目编号、作者简介(第1作者姓名(出生年—)、性别(民族,汉族略)、籍贯、职称、学位、从事     

国外最新消息

切尔诺贝利核电机组完成最后一次卸料工作2008年4月23日,切尔诺贝利核电厂完成了其3号机组的最后一次卸料工作。此次卸料工作的完成,意味着切尔诺贝利核电厂已完成了所有的机组卸料工作。(编译自世界核新闻网站2008年4月24日报道)     

国际原子能机构成员国

1957年阿富汗、阿尔巴尼亚、阿根廷、澳大利亚、奥地利、白俄罗斯、巴西、保加利亚、加拿大、古巴、丹麦、多米尼加共和国、埃及、萨尔瓦多、埃塞俄比亚、法国、德国、希腊、危地马拉、海地、罗马教廷、匈牙利、冰岛、印度、印度尼西亚、以色列、意大利、日本、大韩民国、摩纳哥、摩洛哥、缅甸、荷兰、新西兰、挪威、巴基斯坦、巴拉圭、秘鲁、波兰、葡萄牙、罗马尼亚、俄罗斯联邦、塞尔维亚和黑山、南非、西班牙、斯里兰卡、瑞典、瑞士、泰国、突尼斯、土耳其、乌克兰、英国、美国、委内瑞拉、越南1958年比利时、厄瓜多尔、芬兰、伊朗伊斯兰共和国、卢森堡、墨西哥、菲律宾、苏丹     

前言

由中国文物保护技术协会释光与电子自旋共振测定年代专业委员会(挂靠在上海博物馆)和中国国家地震局地质研究所共同主办的全国第十次释光(Luminescence)与电子自旋共振(ESR)测定年代学术讨论会于2006年11月6-10日在杭州的浙江省地震局培训中心召开.来自内地和香港的大学、中国科学院及部委研究所和文博系统32个单位的专家、学者出席了讨论会.这次讨论会共有27篇论文在会上作了交流,内容涉及热释光(TL)、光释光(OSL)和电子自旋共振测定年代的理论、方法和技术;考古和地质样品年代的测定及其应用;陶瓷器古剂量的测定;释光特性与矿藏成因;热释光、光释光测量仪器研制和改进等.本选编辑录了其中13篇论文予以发表.     

一株耐辐射菌的分离与初步鉴定

对新疆古尔班通古特沙漠土样中分离到的一株耐辐射菌RL2进行了多相分类鉴定.结果发现,此菌为革兰氏阳性,球形,菌落为淡红色;菌株的(G C)mol%含量为71.62%;16S rDNA序列分析表明,菌株RL2的16S rDNA基因序列与D.radiodurans DSM20539T同源性最高(97.2%).通过表型及系统进化树分析,确定RL2菌种分类应归于Deinococcus菌属,并可能是该菌属中的-个新种.     

重离子径迹模板中组装半导体CdS一维纳米材料

用重离子辐照的聚碳酸酯为模板,采用电化学沉积法制备了半导体CdS纳米线和纳米管.通过选用不同蚀刻时间的模板,得到了直径20～100 nm、长度20～30 μm范围、粗细均匀且具有纤维锌矿结构的CdS纳米线与纳米管.利用扫描电子显微镜(SEM)、X射线衍射(XRD)和透射电子显微镜(TEM)对CdS纳米线与管的形貌和晶体结构特征进行了表征.     

Nuclear Fusion Within Extremely Dense Plasma Enhanced by Quantum Particle Waves

Quantum effects play an enhancement role in p-p chain reactions occurring within stars.Such an enhancement is quantified by a wave penetration factor that is proportional to the density of the participating fuel particles.This leads to an innovative theory for dense plasma,and its result shows good agreement with independent data derived from the solar energy output.An analysis of the first Z-pinch machine in mankind’s history exhibiting neutron emission leads to a derived deuterium plasma beam density greater than that of water,with plasma velocities exceeding 10000 km/s.Fusion power could be achieved by the intersection of four such pinched plasma beams with powerful head-on collisions in their common focal region due to the beam and target enhanced reaction.     

西伯利亚化学联合体将集中俄罗斯所有的铀转化产能

正【俄罗斯西伯利亚化学联合体网站2014年1月20日报道】在2013年第二季度,安加尔斯克(Angarsk)电化学厂关闭了六氟化铀生产线,并将其生产线转到西伯利亚(Siberian)化学联合体。这样,西伯利亚化学联合体将成为俄罗斯最大的铀转化基地。之前有报道说,俄罗斯国家原子能集团公司(Rosatom)计划将西伯利亚化学联合体     

The Timing System of the Neutral Beam Injector on EAST

In order to synchronize the elements of the EAST Neutral Beam Injector(NBI)spatially located in several places,a distributed Timing System(TS) is developed in this paper.The timing system provides a clock reference for synchronization and an interlock protection of the EAST NBI system.It sends timing signals to field devices,controls the pulse widths of the timing sequences,and provides a sampling clock for the Data Acquisition System(DAS).The timing system also generates analog waveforms to control power supplies and gas supplies according to the operator’s configuration.The timing system is developed on a PXI(PCI extensions for Instrumentation) platform consisting of a Lab VIEW workstation and a timing control terminal.The timing control terminal consists of a timing node and several control interface crates.Two timing nodes are configured in one beam line.Each node is responsible for the timing sequence,analog generation and feedback control for one ion source.The architecture and implementation of the timing system are presented in this paper.     

Instructions for Manuscript Preparation

<正>Plasma Science and Technology(PST)is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics.Specific interested areas include:basic plasma phenomena;magnetically confined plasma;inertially confined plasma;astrophysics     

《核科学与工程》征稿简则

1)欢迎关注本刊网站,网址:http://nuclse.cbpt.cnki.net。2)请认真阅读相关说明,并按照要求进行投稿和查询。3)"论文模板"、"版权协议模板"、"论文审查证明模板"请在我刊首页下载。5)投稿同时,请先后上传2份文件:①投稿全文.②单位盖章的论文保密审查证     

Experimental Study of the Unsteady Actuation Effect on Induced Flow Characteristics in DBD Plasma Actuators

The main aim of this paper is to investigate unsteady actuation effects on the operation of dielectric barrier discharge(DBD) plasma actuators and to study induced flow characteristics of steady and unsteady actuators in quiescent air.The parameters affecting the operation of unsteady plasma actuators were experimentally measured and compared with the ones for steady actuators.The effects of excitation frequency and duty cycle on the induced flow pattern properties were studied by means of hot-wire anemometers,and the smoke visualization method was also used.It was observed that the current and the mean induced velocity linearly increase with increasing duty cycle while they are not sensitive to excitation frequency.Furthermore,with increasing excitation frequency,the magnitude of vortices shedding from the actuator decreases while their frequency increases.Nevertheless,when the excitation frequency grows beyond a certain level,the induced flow downstream of the actuator behaves as a steady flow.However,the results for steady actuators show that by increasing the applied voltage and carrier frequency,the velocity of the induced flow first increases and then decreases with actuator saturation and the onset of the emission of streaky glow discharge.     

西班牙役龄最长的核电机组将停运

【法新社马德里2012年9月6日电】西班牙Nuclenor公司于2012年9月6日表示,西班牙役龄最长的核电机组即圣玛丽亚德加罗纳机组将在运行了42年后于2013年7月6日关闭。该机组与在2011年3月发生严重核事故的福岛第一核电站的机组具有相同的设计,因此被称为福岛机组的"姊妹"机组。Nuclenor公司表示,"监管的不确定性"导致无法寻求延长该机组的运行寿期,该机组在2009年已经获准延寿4年,按计划将运行到2013年7月。     

欧洲供应局公布2003年年报

【美国《核新闻》2004年9月刊报道】欧洲供应局(ESA)在2003年年报中指出,从核燃料循环供应链的角度来说,2003年是“紧张”的一年。加拿大麦克阿瑟河(McArthurRiver)铀矿遭洪水淹没以及ConverDyn公司的梅特罗波利斯(Metropolis)转化厂的临时停产等几起事故的发生,表明铀循环市场发生供应中断的风险在增大。而且,人们也越来越关注美/俄的高浓铀(HEU)协议是否能够延长到2013年以后。ESA是欧洲原子能共同体(EURATOM)的一家机构,其主要任务之一是对市场进行监测,以确保欧盟(EU)电力公司拥有不同的供应源,而不必过于依赖某一种供应源。E…