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超高功率体放电的形成及其应用(英文)

光学精密工程 2011年第2期19卷 273-283页

作者： tarasenko v f BAKSHT E KH BURACHENKO A G LOMAEv M I RYBKA D v SHULEPOv M A SOROKIN D A SHUT'KO v High Current Electronics Institute

研究了氮气中的高压体（扩散）放电特性,实验中施加的极间隙脉冲电压达数百千伏,持续时间为数纳秒,上升时间为几个纳秒,给出了实验结果。研究了氦气压强为（0.42）×10^5Pa时,从扩散形式到火花放电的放电转换过程。确定了在氮气压强下... 详细信息

研究了氮气中的高压体（扩散）放电特性,实验中施加的极间隙脉冲电压达数百千伏,持续时间为数纳秒,上升时间为几个纳秒,给出了实验结果。研究了氦气压强为（0.42）×10^5Pa时,从扩散形式到火花放电的放电转换过程。确定了在氮气压强下电流幅度与逃逸电子束电流脉宽的关系。结果表明,导致隙间扩散放电的超短雪崩电子束（SAEB）对放电过程有重要的影响。在该压强下得出了SAEB瞬间产生相对放电电流的时延与压强的关系,根据该关系,时延随着压强增加而变化,并且在压强为2×10^5Pa时最小,同时扩散放电电流脉冲的峰值随压强增加而减小。在0.5×10^5Pa的压强下,使用刀片电极和6 cm长的N2∶Sf6=10∶1的激活媒质,得到了输出能量为2 mJ、脉冲功率为0.55 MW的激光。最后,在大气压强下,对AlBe箔片进行了重复频率放电处理（REP）,其表层清除了碳而且氧原子以450 nm/300pulse渗入箔片。

关键词：体放电扩散放电非均匀电场逃逸电子紫外激光器修饰及清洁

纳秒、皮秒和飞秒激光脉冲对材料表面的改性(英文)

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光学精密工程 2011年第2期19卷 221-227页

作者： TRTICAM S GAKOvIC B M RADAK B B BATANI D tarasenko v f PETROvIC S STASIC J MILOvANOvIC D KRMPOT A JELENKOvIC B vINCA Institute of Nuclear Sciences University of Belgrade P.O. BOX 522 11001 Belgrade Serbia Universita degli Studi di Milano Bicocca Piazza della Scienza 3 20126 Milano Italy High Current Electronics Institute SB of RAS 634055 Tomsk Russia Institute of Physics P.O. BOX 57 11001 Belgrade Serbia

对基体材料镉镍铁合金600和多层TiAlN/TiN涂层的激光表面改性在基础研究和实际应用中有着很好的前景。本文观察了由超短脉冲(fs和ns)和短脉冲(ns)激光器引起的镉镍铁合金600和TiAlN/TiN镀层的表面变化。结果显示,3种激光都能使靶面发生... 详细信息

对基体材料镉镍铁合金600和多层TiAlN/TiN涂层的激光表面改性在基础研究和实际应用中有着很好的前景。本文观察了由超短脉冲(fs和ns)和短脉冲(ns)激光器引起的镉镍铁合金600和TiAlN/TiN镀层的表面变化。结果显示,3种激光都能使靶面发生形态改变,超短脉冲的破坏轮廓更为清晰。与ps激光脉冲相比,fs激光脉冲能产生更严重的破坏。与产生半球体形状的ps激光束相反,fs激光脉冲产生的破坏斑是圆锥形的。另外,ns脉冲辐照时热效应占支配地位,且所有的辐照都伴随着等离子体。

关键词：纳秒脉冲皮秒脉冲飞秒脉冲 Inconel 600镀层 TiAlN/TiN镀层激光改性

纳秒激光烧蚀下液态金属表面微结构的形成(英文)

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中国光学 2011年第1期4卷 46-52页

作者： tarasenko v f PANCHENKO A N BULGAKOvA N M SHULEPOv M A TEL’MINOvAE 李殿军张来明姜可谢冀江俄罗斯科学院西伯利亚分院强电流研究所托木斯克634055 中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室吉林长春130033 俄罗斯西伯利亚分院热物理研究所新西伯利亚630090

首次发现了在不同保护气体及多脉冲Uv-IR激光的照射下,液态金属的微型突起和微结构的形成。测量表明,针对不同的金属和保护气,这种结构的单脉冲生成速率可达(5～20)μm/pulse,形成了长度为1～2 mm,直径约为焦点两倍的单个微型突起。最后... 详细信息

首次发现了在不同保护气体及多脉冲Uv-IR激光的照射下,液态金属的微型突起和微结构的形成。测量表明,针对不同的金属和保护气,这种结构的单脉冲生成速率可达(5～20)μm/pulse,形成了长度为1～2 mm,直径约为焦点两倍的单个微型突起。最后,介绍了控制微结构形状的可能性,并讨论了它们的应用潜力。

关键词：液态金属表面微结构纳秒激光烧蚀

基于GaSe和GaSe_(0.7)S_(0.3)单晶的单脉冲CO_2激光倍频器(英文)

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中国光学 2011年第4期4卷 397-403页

作者： tarasenko v f SITNIKOv A G PANCHENKO A N TEL'MINOv A E GENIN D E 李殿军张来明姜可谢冀江 SARKISOv S Yu BEREZNAYA S A KOROTCHENKO Z v KAZAKOv A v 俄罗斯科学院西伯利亚分院强电流研究所俄罗斯托木斯克634055 中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室吉林长春130033 托木斯克州立大学西伯利亚物理技术研究所半导体材料科学实验室托木斯克634034俄罗斯

描述了使用电感储能发生器和半导体转换开关泵浦的工作波长为10.6μm的高效CO2激光器。给出了激光泵浦的非线性晶体GaSe和GaSe0.7S0.3的二次谐波振荡的实验数据和理论估算结果。结果显示,GaSe晶体在输入能量为180mJ时,最大能量转换效率... 详细信息

描述了使用电感储能发生器和半导体转换开关泵浦的工作波长为10.6μm的高效CO2激光器。给出了激光泵浦的非线性晶体GaSe和GaSe0.7S0.3的二次谐波振荡的实验数据和理论估算结果。结果显示,GaSe晶体在输入能量为180mJ时,最大能量转换效率为0.38%,倍频激光的峰值功率为8 kW。

关键词： GaSe GaSe0.7S0.3 单脉冲CO2激光倍频器

Methods for recording the time profile of single ultrashort pulses of electron beams and discharge currents in real-time mode

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High voltage 2016年第1期1卷 43-51页

作者： victor f.tarasenko Dmitry v.Rybka Institute of High Current Electronics Siberian Branch Russian Academy of SciencesTomsk 634055Russia

The collectors for measuring the time profile of a current pulse of the runaway electron beam that are generatedunder atmospheric pressure are described. An analysis of changes in pulse shape depending on the bandwidth of theregistration path with a temporal resolution of up to 20 ps was performed. It is shown that the electron beam detectedbehind small-diameter diaphragms has a complex structure, which depends on the parameters of the gas diode. Thereis a design of the current shunts with a temporal resolution of up to 100 ps in this study. Measurement techniques ofvoltage pulses with subnanosecond and nanosecond duration are briefly described.

关键词： ultrashort pulse recording

formation of diffuse and spark discharges between two needle electrodes with the scattering of particles

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Plasma Science and Technology 2024年第9期26卷 32-39页

作者： victor f tarasenko Dmitry v BELOPLOTOv Alexei N PANCHENKO Dmitry A SOROKIN Institute of High Current Electronics Siberian BranchRussian Academy of SciencesTomsk 634055Russia National Research Tomsk State University Tomsk 634050Russia

The development of a nanosecond discharge in a pin-to-pin gap filled with air at atmospheric pressure has been studied with high temporal and spatial resolutions from a breakdown start to the spark *** and negative nanosecond voltage pulses with an amplitude of tens of kilovolts were ***-resolved images of the discharge development were taken with a fourchannel Intensified Charge Coupled Device(ICCD)*** minimum delay between the camera channels could be as short as≈0.1 *** made it possible to study the gap breakdown process with subnanosecond *** was observed that a wide-diameter streamer develops from the high-voltage pointed *** ionization processes near the grounded pin electrode started when the streamer crossed half of the *** bridging the gap by the streamer,a diffuse discharge was *** development of spark leaders from bright spots on the surface of the pointed electrodes was observed at the next *** was found that the rate of development of the spark leader is an order of magnitude lower than that of the wide-diameter *** thin luminous tracks were observed against the background of a discharge plasma *** has been established that the tracks are adjacent to brightly glowing spots on the electrodes and are associated with the flight of small particles.

关键词： needle electrodes short voltage pulses atmospheric air streamer breakdown diffuse and spark discharges scattering metal particles

Evolution of ionization waves in a multi-pulsed plasma jet:the role of memory charges

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Plasma Science and Technology 2023年第3期25卷 95-103页

作者： N Yu BABAEvA G v NAIDIS v f tarasenko D A SOROKIN Cheng ZHANG Tao SHAO Joint Institute for High Temperatures Russian Academy of Sciences Institute of High Current Electronics Siberian BranchRussian Academy of Sciences Institute of Electrical Engineering Chinese Academy of Sciences University of Chinese Academy of Sciences

In this paper,we discuss the properties of ionization waves(IWs)in a multi-pulsed plasma jet while using the two-dimensional computational *** IWs are generated by application of three short negative pulses with a repetition frequency 12.5 *** simulations are performed continuously during a single run while accounting for charges accumulated inside(surface charges)and outside(space charges)the *** plasma forming gas mixture(He/O2=99.8%/0.2%)is injected through the discharge tube into the surrounding humid *** show that an IW can emerge from the tube exit at a pulse rising edge(as a negative IW)and at a falling edge of the same pulse(as a positive IW).It is demonstrated that remnants of the negative and positive charges play an essential role in the discharge *** first pulse travels the shortest distance as it propagates through the initially non-ionized *** IWs developing during the second pulse essentially enlarge the plasma plume *** the same time,the IWs generated by the third pulse eventually decay due to the remnants of charges accumulated during the previous *** memory charges can lead to the IW extinction.

关键词： helium plasma jet multiple pulses positive and negative ionization waves

Runaway electrons during subnanosecond breakdowns in high-pressure gases

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High voltage 2016年第4期1卷 181-191页

作者： victor f.tarasenko Mikhail I.Lomaev Dmitry v.Beloplotov Dmitry A.Sorokin Institute of High Current Electronics Siberian Branch Russian Academy of Science2/3 Akademicheskii Ave.Tomsk 634055Russia

The parameters of runaway electrons produced in nanosecond high-voltage discharges in different gases(air,nitrogen,sulphur hexafluoride,krypton,argon,methane,neon,hydrogen,helium)at atmospheric and higher pressure were *** optical analysis was also performed to investigate the ionisation dynamics in diffuse discharges in nitrogen and nitrogen-containing *** breakdown of a point-to-plane gap by nanosecond(≃2 ns)high-voltage(≃200 kv)pulses of negative voltage polarity and gas pressure above 0.1 MPa,a supershort avalanche electron beam(SAEB)was detected by a collector behind the flat *** pressure>0.1 MPa of nitrogen and other gases it is shown that the maximum pressure for SAEB registration decreases with increasing the voltage pulse rise ***,to detect a SAEB at atmospheric and higher gas pressure,one should use voltage pulses with an amplitude of hundred kilovolts and rise time of∼1 ns and *** experimental research in the dynamics of optical radiation from the discharge plasma shows that the breakdown in which runaway electrons are produced develops as an ionisation wave.

关键词： wave. gases fluoride

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Guest Editorial

High voltage 2017年第2期2卷 47-48页

作者： Shao, Tao tarasenko, victor f. Tu, Xin Levko, Dmitry Wuhan University of Hydraulic and Electrical Engineering Wuhan China Laboratory of Optical Radiation IHCE China School of Chemistry University of Manchester United Kingdom Department of Aerospace Engineering and Engineering Mechanics University of Texas Austin TX United States

Much attention is being focused on research of plasmas due to their unique features and great potential for application in different areas,including surface modification,plasma medicine,and plasma *** the various topics related to plasma,we selected two as the main topics of this Special Issue,namely Nanosecond-Pulse Discharges,and Plasma-Assisted Oxidation.

关键词： Oxidation potential Issue