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大气压空气纳秒脉冲板-板放电中逃逸电子产生机理

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物理学报 2023年第10期72卷 233-241页

作者：肖江平戴栋 victor f.tarasenko 邵涛华南理工大学电力学院广州510641 俄罗斯科学院大电流研究所俄罗斯托木斯克634055 中国科学院电工研究所北京100190

经典放电理论(Townsend和流注理论)解释纳秒脉冲气体放电存在局限性,近年来基于高能电子逃逸的纳秒脉冲气体放电理论研究受到广泛关注.但是目前对大气压空气纳秒脉冲板-板放电中逃逸电子产生机理研究仍较少,严重阻碍了纳秒脉冲放电等离... 详细信息

经典放电理论(Townsend和流注理论)解释纳秒脉冲气体放电存在局限性,近年来基于高能电子逃逸的纳秒脉冲气体放电理论研究受到广泛关注.但是目前对大气压空气纳秒脉冲板-板放电中逃逸电子产生机理研究仍较少,严重阻碍了纳秒脉冲放电等离子体的应用发展.本文利用一维粒子模型,对幅值为20 kV的纳秒脉冲电压驱动下,间隙长为1 mm的板-板电极之间的大气压空气放电中逃逸电子的产生机理进行了数值模拟研究..结果表明,在空间电荷动力学行为的影响下,板-板电极之间出现了增强电场区域,使得电子可以满足电子逃逸判据而进入逃逸模式.此外,还观察到放电通道前逃逸电子的预电离效应导致了二次电子崩的产生,随着二次电子崩与放电通道不断汇聚,引导并加速了放电通道的发展,最终导致气隙击穿.本研究进一步揭示了纳秒脉冲板-板放电机理,拓展了纳秒脉冲气体放电基础理论,为纳秒脉冲放电等离子体的应用和发展开辟了新的机会.

关键词：纳秒脉冲放电逃逸电子增强电场预电离

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

Generation of X-ray Emission in Repetitive Nanosecond-pulse Discharge at Atmospheric Pressure

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高电压技术 2013年第9期39卷 2095-2104页

作者： ZHANG Cheng SHAO Tao YAN Ping victor f. tarasenko Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China Key Laboratory of Power Electronics and Electric Drives Chinese Academy of Sciences Beijing 100190 China Institute of High Current Electronics Russian Academy of Sciences Tomsk 634055 Russia

Pulsed discharges can generate high power densities and high equivalent electric fields in plasma to emit X-rays,which is closely related to discharge *** this paper,discharge characteristics and X-ray emission of typical nanosecond-pulse discharges(corona,diffuse,spark or arc)are ***,the diffuse discharges are observed at pulse repetition frequencies up to 1 *** influencing the discharge characteristics and X-ray emission are analyzed,such as the gap spacing,parameters of the applied pulse(amplitude,pulse repetition frequency),anode and cathode materials,and curvature radius of *** is concluded that the maximum X-ray intensity is obtained in a diffuse discharge,and the X-ray intensity is affected by the pulse repetition frequency,applied voltage,anode material,and curvature radius of *** example,X-ray intensity increases with the pulse repetition frequency and the atomic numbers of the anode material,but it decrease with the increase of curvature *** is also shown that the cathode material has no obvious influence on the X-ray intensity.

关键词： X射线发射脉冲放电大气压力纳秒脉冲重复频率射线强度阴极材料曲率半径

Subnanosecond high-voltage breakdown initiated in high-pressure nitrogen by a runaway electron beam

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High Voltage 2017年第2期2卷 56-59页

作者： Alexander G.Burachenko victor f.tarasenko Evgenii Kh.Baksht Institute of High Current Electronics SB RAS Tomsk 634055Russia National Research Tomsk State University Tomsk 634050Russia National Research Tomsk Polytechnic University Tomsk 634050Russia

This study reports on subnanosecond breakdowns initiated on high pressure nitrogen by a runaway electron beam in an inhomogeneous electric *** is shown that a diffuse discharge with a duration of≥1 ns is formed in the gas *** are reported for the first time on collector measurements of a supershort avalanche electron beam downstream of an anode foil at a nitrogen pressure of 0.5–1.2 *** beam pulsewidth at these pressures is∼90 *** a nitrogen pressure of 1.2 MPa,the number of electrons with an energy>70 keV recorded by the collector is 4×10^(6)/cm^(2).

关键词： field initiated beam

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

Diffuse discharges in Sf_(6)and mixtures of Sf_(6)with H_(2),formed by nanosecond voltage pulses in non-uniform electric field

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High Voltage 2018年第4期3卷 316-322页

作者： Alexei N.Panchenko victor f.tarasenko Dmitry V.Beloplotov Nikolay A.Panchenko Mikhail I.Lomaev Institute of High Current Electronics Siberian Branch(SB)Russian Academy of Sciences(RAS)Tomsk 634055Russia faculty of Innovative Technologies National Research Tomsk State UniversityTomsk 634050Russia Department of Photonics and Quantum Electronics National Research Tomsk Polytechnic UniversityTomsk 634050Russia Department of Physics Tomsk State University of Control Systems and RadioelectronicsTomsk 634050Russia

Results of experimental study of nanosecond diffuse discharge in Sf_(6)and gas mixtures of Sf_(6)with H_(2),D_(2)and C_(2)H_(6)are *** aim of this work is to study parameters of discharge between two extended electrodes with a small radius of curvature in Sf_(6)and Sf_(6)with *** was shown that diffuse discharge can be formed in Sf_(6)at elevated pressure between blade electrodes with length of 30 *** was also confirmed that in a sharply non-uniform electric field a beam of runaway electrons is generated and that the gap breakdown occurs due to ionisation waves which begin on electrodes with small radius of *** action in the infrared spectral region was obtained in Sf_(6)-H_(2)(D_(2),C_(2)H_(6))*** laser output up to 110 mJ was easily achieved which corresponds to ultimate intrinsic efficiency(with respect to deposited energy)of 10%.

关键词： breakdown uniform radius

Neutrons in a nanosecond low-pressure discharge in deuterium

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Matter and Radiation at Extremes 2016年第4期1卷 207-212页

作者： victor f.tarasenko Mikhail I.Lomaev Dmitry A.Sorokin Boris A.Nechaev Vladimir N.Padalko Gennady N.Dudkin Laboratory of Optical Radiation of the Institute of High Current Electronics SB RAS Tomsk 634055Russia Physical Technical Institute National Research Tomsk Polytechnic UniversityTomsk 634050Russia National Research Tomsk State University Tomsk 634050Russia

Stable neutron generation with a yield of ~1.2×10^(4) neutrons per pulse was obtained during d(d,n)^(3)He reaction initiated by the high-voltage nanosecond discharge in a gap with a potential tungsten cylinder(anode)and a grounded deuterated zirconium plate(cathode)filled with deuterium at a pressure of ~10^(2) *** duration of the neutron pulse was ~1.5 *** intensive neutron emission was registered without deuterated *** of material of the tungsten electrode was observed during the high-voltage nanosecond discharge in the deuterium,hydrogen,helium and argon at pressures of 10^(2)-10^(4) Pa.

关键词： Neutrons Deuterium High-voltage nanosecond discharge Low-pressure Thermonuclear reaction

Dynamic Characteristics in Subnanosecond Breakdown and Generation of Supershort Avalanche Electron Beam

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高电压技术 2013年第9期39卷 2207-2215页

作者： victor f. tarasenko SHAO Tao Dmitry V. Rybka ZHANG Cheng Alexandr G. Burachenko Igor' D. Kostyrya Mikhail I. Lomaev Ping Yan Evgeni Kh. Baksht Institute of High Current Electronics Russian Academy of Sciences Tomsk 634055 Russia Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China Key Laboratory of Power Electronics and Electric Drive Chinese Academy of Sciences Beijing 100190 China

In this paper,subnanosecond-pulse and one-nanosecond-pulse generators are used to study the breakdowns in highly overvolted gaps in atmospheric pressure *** different cathodes,we measured the applied voltage and discharge current to investigate the dynamic characteristics in the subnanosecond breakdown during the generation of a supershort avalanche electron ***,characteristics of dynamic displacement current are presented in the current paper,which is detected between the ionization wave front and a plane *** is shown that during a subnanosecond voltage rise time,the amplitude of the dynamic displacement current can be higher than 4 *** is demonstrated that the breakdown in the air gap is assisted by ionization processes between the ionization wave front and a plane anode.

关键词：动力学特性亚纳秒电子束击穿雪崩超短纳秒脉冲发生器电离过程

Review of supershort avalanche electron beam during nanosecond-pulse discharges in some gases

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Matter and Radiation at Extremes 2017年第3期2卷 105-116页

作者： victor f.tarasenko Cheng Zhang Evgenii Kh.Baksht Alexander G.Burachenko Tao Shao Dmitry V.Beloplotov Mikhail I.Lomaev Ping Yan Andrey V.Kozyrev Natalia S.Semeniuk Laboratory of Optical Radiation of the Institute of High Current Electronics Tomsk 634055Russia National Research Tomsk State University Tomsk 634050Russia National Research Tomsk Polytechnic University Tomsk 634050Russia Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China

Supershort avalanche electron beam(SAEB)plays an important role in nanosecond-pulse *** paper aims at reviewing ex-periments results on characteritics of SAEB and its spectra in different gases in nanosecond-pulse *** the joint experiments were carried in the Institute of High Current Electronics of the Russian Academy of Sciences and the Institute of Electrical Engineering of the Chinese Academy of *** these experiments,the generation of a SAEB in Sf 6 in an inhomogeneous electric field was studied on three generators with pulse rise times of 0.3,0.5 and~2 ***,the comparison of SAEB parameters in Sf 6 with those obtained in other gases(air,nitrogen,argon,and krypton)is ***,the SAEB spectra in Sf 6 and air at pressures of 10 kPa(75 torr),and 0.1 MPa(750 torr)are reviewed and ***,1.5-D theoretical simulation of the supershort pulse of the fast electron beam in a coaxial diode filled with Sf 6 at atmospheric pressure is *** simulation was carried out in the framework of hybrid model for discharge and runaway electron *** above research progress can provide better understanding of the investigation into the mechanism of nanosecond-pulse discharges.

关键词： Runaway electrons Supershort avalanche electron beam(SAEB) Sf 6 Gas diode High pressure Simulation Hybrid model