Investigation on pulsed discharge mode in SF_6-C_2H_6 mixtures

The non-chain chemical HF(DF)laser is one of the most powerful electrically-driven lasers operating in mid-infrared,in which SF6-C2H6 mixtures are often used as lasering media.Due to the electronegativity of SF6,the discharge in SF6-C2H6 presents a complicated discharge mode.To achieve reproducible pulsed laser output,pulsed discharge in SF6-C2H6 mixtures is investigated for discharge mode using plane electrodes assisted by array pre-ionization spark pins in cathode surface.Firstly,two modes can be distinguished.One mode is called the selfsustained volume discharge(SSVD),which is characterized by spatial uniformity in the discharge gap and pulse to pulse repeatability.On the contrary,another mode includes random arc passages in the discharge gap and therefore cannot conduct lasering.By varying discharge conditions(gap voltage,gas pressure,etc)two discharge modes are observed.Secondly,the holding scope of the SSVD mode is analyzed for the optimal mixture ratio of 20:1,and the boundary tend of the holding scope of SSVD indicates there exists maximum gas pressure and maximum charging voltage for SSVD.Finally,the peak current of SSVD relates positively to charging voltage,while negatively to gas pressure,from which it is drawn that synchronous electron avalanches initiated by the sliding array overlap spatially into SSVD and thus SSVD is essentially an α ionization avalanche.     

一种新型的基于PCE的多层多域GM-PLS／ASON光网络体系结构

With the development of large-scale, multi-region and multi-layer networks, policy-based and constraint-based path computation is more and more complicated and dynamic routing becomes one of the key issues in GMPLS/ASON networks. To combine the advantages of both GMPLS control plane and PCE, novel dual routing engine architecture of multi-layer and multi-region scalable optical networks is proposed in this paper. The collaboration of group engine and unit engine makes it effective to optimize path computation especially under the condition of complex multi-constraints. The functional architecture of dual routing engine is detailed. Different potential co, operation relationships between group engine and unit engine are investigated and simulation results for multi-region and multi-layer routing schemes are analyzed.     

软件定义光接入网

提出一种基于软件定义的光接入网架构,可提升网络资源利用率,实现业务灵活接入与高效智能调度。该架构通过采用软件定义的光接入设备,可使接入网具备控制集中化、资源虚拟化、业务服务化等特点,进而降低网络运维成本,提升用户终端体验,为构建下一代简单、弹性、智能光接入网提供技术手段。     

酚醛竹丝梭的应用开发

本文简述了我国梭子的发展情况,介绍了酚醛竹丝梭的工艺路线,分析了制造酚醛竹丝梭的几个关键技术问题以及当前竹丝梭存在的问题.指出随着纺织工业经济的回升,越来越多的纺织厂家将使用竹丝梭代替木梭.     

全力建设节水型社会的探讨

对乌拉特前旗水资源状况及建立节水型社会提出建议。     

基于QT/Embedded的γ能谱仪数据处理软件设计

γ能谱仪器的数据处理软件在整个仪器设计中起着重要的作用。本文介绍了用于便携式γ能谱仪的数据处理软件设计。本设计是基于嵌入式Linux操作系统和QT/Embedded GUI平台库上实现的。使得该软件有着良好的界面和数据处理能力。     

大型预焙槽强化电流后技术条件的优化

本文主要通过对二、三电解厂强化电流前后技术条件的对比,阐述了适当提高分子比、降低电解槽槽工作电压对节能降耗的重要性。     

八钢3号转炉升级改造工程施工管理浅议

八钢3号转炉升级改造工程的特点是不停产改造,施工的工程难度很大,介绍八钢股份公司第一炼钢厂转炉升级改造工程的施工组织、管理。     

河南省卢氏县橡子庙沟铁矿床特征及成因研究

河南省卢氏县橡子庙沟铁矿床地处北秦岭加里东褶皱系多金属成矿带,通过地表工程和中深部钻探工程,控制主矿体9条矿脉。矿体多呈似层状产出,矿体与围岩产状基本一致,层控作用明显。与成矿关系密切的为二郎坪群火神庙组地层,在变细碧岩与大理岩的接触带是最有利的成矿部位,矿区内断裂构造的多期次活动对矿液的运移和富集起到了重要作用,汤河岩体及张家庄岩体为本区多金属成矿提供了丰富的成矿物质和成矿热液。结合区域地质背景、矿床地质特征及区内矿物岩石学特征,认为矿床成因与海相火山—侵入活动有关,为海相火山岩型铁矿床。