2007 16th IEEE International Pulsed Power Conference最新文献

Dissipative instability under weak beam-plasma coupling 弱光束-等离子体耦合下的耗散不稳定性

2007 16th IEEE International Pulsed Power Conference Pub Date : 2012-10-01 DOI: 10.1017/S0022377812000244

E. Rostomyan

引用次数: 5

Inductive heating of materials for the study of high-temperature mechanical properties. 感应加热用于材料高温力学性能的研究。

2007 16th IEEE International Pulsed Power Conference Pub Date : 2011-08-12 DOI: 10.1109/TDEI.2011.5976137

D. Wetz, D. Surls, D. Landen, S. Satapathy, M. Crawford

{"title":"Inductive heating of materials for the study of high-temperature mechanical properties.","authors":"D. Wetz, D. Surls, D. Landen, S. Satapathy, M. Crawford","doi":"10.1109/TDEI.2011.5976137","DOIUrl":"https://doi.org/10.1109/TDEI.2011.5976137","url":null,"abstract":"In any high-energy pulsed power experiment, the metallic conductors are expected to heat up significantly due to resistive losses. In the pulsed case, the effects of local heat transfer are decreased due to limited thermal diffusion, so the process is considered to be adiabatic rather than isothermal. Experimental evidence from electron beam heating indicates that high-temperature mechanical properties significantly depend on the rapidity and duration of heat deposition. With this in mind, it is important to understand the mechanical properties of metals when heated rapidly so that the correct mechanical properties are considered when designing high-energy experiments such as railguns, where both thermal and mechanical stresses are high. An expanding ring experiment, similar to the one originally designed by Gourdin et al. [1,2] has been set up at the Institute for Advanced Technology (IAT) to test such mechanical properties [3]. The experiment uses a primary coil driven with current pulse from a near critically damped RLC circuit that causes a thin specimen ring to expand and fragment due to the induced electromagnetic forces. In order to determine material properties at elevated temperatures, an inductive heating source has been developed to rapidly heat the ring specimen to temperatures as high as the melting temperature in a few milliseconds, immediately prior to the application of electromagnetic expansion forces. The source employs a microprocessor-controlled pumped LC tank circuit with a resonant frequency of roughly 25 kHz to induce a current into the ring. The current in the primary and secondary coils are measured using Pearson and Rogowski coils. A VISAR is used to measure the expansion speed of the ring, and a high-speed camera is used to capture the dynamic fragmentation of the ring. The data generated will quantify the rate of heating sensitivity of material properties in commonly used materials for development and validation of appropriate constitutive equations.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115762675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Application of a self-breakdown hydrogen spark gap switch on high power pulse modulator 自击穿氢火花隙开关在大功率脉冲调制器上的应用

2007 16th IEEE International Pulsed Power Conference Pub Date : 2008-10-30 DOI: 10.1063/1.3005902

J.L. Liu, Y. Yin, T. Zhan, J.H. Feng, H. Zhong

引用次数: 7

Discharge current and current of supershort avalanche E-beam at volume nanosecond discharge in non-uniform electric field 非均匀电场中体积纳秒放电超短雪崩电子束的放电电流和电流

2007 16th IEEE International Pulsed Power Conference Pub Date : 2007-09-28 DOI: 10.1117/12.785633

V. Tarasenko, D. Rybka, E. H. Baksht, M. Lomaev

引用次数: 0

Vertical dust particle chains - mass and charge measurements 垂直尘粒链。质量和电荷测量

2007 16th IEEE International Pulsed Power Conference Pub Date : 2007-07-23 DOI: 10.1109/ppps.2007.4652490

J. Carmona-Reyes, J. Schmoke, M. Cook, Jie Kong, T. Hyde

{"title":"Vertical dust particle chains - mass and charge measurements","authors":"J. Carmona-Reyes, J. Schmoke, M. Cook, Jie Kong, T. Hyde","doi":"10.1109/ppps.2007.4652490","DOIUrl":"https://doi.org/10.1109/ppps.2007.4652490","url":null,"abstract":"Dusty plasmas have generated a large amount of interest since the discovery of ordered structure (crystal) formation in experimentally generated complex plasmas in 1994. Dust particles within the plasma sheath generated in these complex plasmas can form vertical chains due to the streaming ion wakefield. For the simplest of these configurations (a two particle chain), the particle closest to the lower electrode will generally remain in the shadow of the particle farthest from the lower electrode. These results in the two particles feeling differing ion drag forces: the top particle is acted on by the ion drag force directed from the plasma to the lower electrode, while the bottom particle is acted upon by the resulting ‘wakefield’ produced by the interaction of the upper particle with the ion drag force. This dynamic situation currently provides the best known experimental environment for examining the physics behind the ion drag force and its interaction with the plasma sheath. An experimental method for investigating the interaction between pair-particle chains based on modulating the bias on the lower electrode employing a DC bias modulation technique will be presented.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129844709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Magnetic screening against shaped-charge action 磁筛防聚能作用

2007 16th IEEE International Pulsed Power Conference Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4345913

G. Shvetsov, A. Matrosov, S. Fedorov, A. Babkin, S. Ladov

引用次数: 1

Factors affecting the operation of laser-triggered gas switch (LTGS) with multi-electrode spark gap 影响多电极火花隙激光触发气体开关(LTGS)工作的因素

2007 16th IEEE International Pulsed Power Conference Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4651808

S. Macgregor, I. Timoshkin, M. Given, R. Fouracre, J. Lehr, L. Warne

引用次数: 1

Application of TPI1-10k/50 thyratrons for building a modulator, intended for supply of inductive-resistive load in double-pulse mode TPI1-10k/50闸流管在调制器中的应用，用于在双脉冲模式下提供感阻负载

2007 16th IEEE International Pulsed Power Conference Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4346103

A. Akimov, P. Logachev, V. Bochkov, D. Bochkov, V. Dyagilev, V. G. Ushich

{"title":"Application of TPI1-10k/50 thyratrons for building a modulator, intended for supply of inductive-resistive load in double-pulse mode","authors":"A. Akimov, P. Logachev, V. Bochkov, D. Bochkov, V. Dyagilev, V. G. Ushich","doi":"10.1109/PPPS.2007.4346103","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4346103","url":null,"abstract":"The circuit of modulator, serving to supply inductive-resistive load in double-pulse mode with currents up to 10 kA and pulse duration of 300 ns, is described. As switching components thyratrons (pseudospark switches) designated as TPI1-10k/50 with anode voltage up to 50 kV have been used. TPI-thyratrons are capable of operating in circuits with grounded cathode, which allows obtaining higher performance reliability and longer service lifetime in contrast to other known designs of pseudospark switches, operating with grounded grid. The thyratrons can be considered as alternative to present switches, including hot cathode hydrogen thyratrons and up-to-date power solid state devices, especially for switching of high-currents with sub-nanosecond jitter, turn-on time of 3÷5 ns and average current up to 0.3 A. The results of tests, confirming possibility of reverse dielectric strength recovery within some microseconds after switching of 10 kA forward anode current, are presented. Basic electrical parameters, effecting thyratron operation in the indicated mode, are analyzed. To clarify prospects of further development of TPI-thyratrons, pentode version of the thyratron, serving to reduce recovery time, is designed.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123246613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Analysis of the current waveforms observed in underwater spark discharges 水下火花放电电流波形分析

2007 16th IEEE International Pulsed Power Conference Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4651785

M. Given, I. Timoshkin, M. Wilson, S. Macgregor, J. Lehr

引用次数: 3

Electro-thermal simulation studies for pulsed voltage failures in microstructured ZNO varistors 微结构ZNO压敏电阻脉冲电压失效的电热模拟研究

2007 16th IEEE International Pulsed Power Conference Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4651859

G. Zhao, Ravindra P. Joshi, H. Hjalmarson

引用次数: 0