2005 IEEE Pulsed Power Conference最新文献_第2页

Peak Implosion Power as a Predictor of Plasma Radiation Source K-Shell Performance 峰值内爆功率作为等离子体辐射源k壳性能的预测因子

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300651

D. Mosher, R. Commisso, D. Murphy, D. Phipps, S. Stephanakis

引用次数: 4

Electron Beam Transport in Gas and Plasma-filled Cells on RITS RITS上气体和等离子体填充细胞中的电子束输运

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300433

K. Hahn, E. Schamiloglu, D. Welch, B. Oliver, J. Maenchen, N. Bruner, G. Cooper, S. Cordova, M. Johnston, J. Mclean, I. Molina, S. Portillo, D. Rose, D. Rovang, D. van de Valde, D. Ziska

{"title":"Electron Beam Transport in Gas and Plasma-filled Cells on RITS","authors":"K. Hahn, E. Schamiloglu, D. Welch, B. Oliver, J. Maenchen, N. Bruner, G. Cooper, S. Cordova, M. Johnston, J. Mclean, I. Molina, S. Portillo, D. Rose, D. Rovang, D. van de Valde, D. Ziska","doi":"10.1109/PPC.2005.300433","DOIUrl":"https://doi.org/10.1109/PPC.2005.300433","url":null,"abstract":"Over the past 30 years, the paraxial diode has utilized a gas-filled transport cell to focus an electron beam onto a high-Z target in order to generate intense x-rays for flash radiography. One of the key objectives is to create a small radiographic spot, which in turn is related to the focusing dynamics of the beam. For gas-filled transport cells, the primary limitation to achieving a small time-integrated spot size is believed to be due to beam sweeping through the focal plane on the timescale of the pulse. This results in a larger than desired time-integrated radiographic spot. Recent simulations using LSP, a particle-in-cell code, have found that if a pre-ionized plasma transport cell is utilized with density on the order of 1016 cm-3, then the beam focal plane is essentially \"frozen\" in time, thereby limiting spot growth due to beam sweep. Recent experiments at Sandia National Laboratories have been conducted to investigate the spot behavior as a function of time for both gas and plasma-filled transport cells. For the plasma-filled experiments, a z-discharge of static hydrogen is used to create a highly ionized plasma in the transport cell. For the gas-filled experiments, the transport cell is filled with either hydrogen or air with pressures of 0.5-5 Torr. Time-resolved as well as time integrated measurement of the focal spot are presented and compared for both the gas and plasma-filled transport cells.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128294048","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

Dynamic Resistance Calculation of Nanosecond Spark-Gaps 纳秒级火花隙的动态电阻计算

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300732

M. Istenič, I. Smith, B. M. Novae

引用次数: 6

Electromagnetically Driven Expanding Ring Experiments for Strength Studies 电磁驱动膨胀环强度研究实验

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300677

D. Landen, S. Satapathy, D. Surls

{"title":"Electromagnetically Driven Expanding Ring Experiments for Strength Studies","authors":"D. Landen, S. Satapathy, D. Surls","doi":"10.1109/PPC.2005.300677","DOIUrl":"https://doi.org/10.1109/PPC.2005.300677","url":null,"abstract":"Most high-temperature mechanical properties of metals are available for isothermal conditions obtained after heating the specimen for several hours. However, in pulsed-power applications, materials are adiabatically heated by rapid deposition of energy. Experimental evidence from electron beam heating indicates that high- temperature mechanical properties significantly depend on the rapidity and duration of heat deposition. We have designed an experimental apparatus to apply heat using a short-duration electric pulse in an expanding ring experiment originally developed by Gourdin et al. [1], [2]. While earlier experiments were primarily concerned with obtaining high-strain-rate strength and fragmentation data, our primary goal is to obtain high-temperature data under pulsed heating conditions. The experiment uses a primary coil powered by an RC circuit designed to be critically damped to induce a current pulse in a thin ring of specimen that expands and fragments due to electromagnetic forces. The induced current heats the sample prior to significant expansion of the ring. Current in the primary and secondary are measured using Pearson and Rogowski coils. We used a VISAR to measure the ring's expansion speed and a high-speed camera to capture its dynamic fragmentation. 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":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130298138","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: 7

Ferroelectric Thick Film in Insulator Sleeve on a Low Energy Plasma Focus 低能等离子体聚焦下绝缘体套筒中的铁电厚膜

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300453

G. Sylvester, P. Silva, J. Moreno, M. Zambra

引用次数: 0

Implementation of Compact Negative Pulse Generator Based on EMTP Simulation Design 基于EMTP仿真设计的紧凑型负脉冲发生器实现

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300471

K. Ko, Bongseong Kim, Heung-Jin Ju

引用次数: 0

Portable & Low Cost Giga-Watt Pulsed Power Source for Intense Electron Beam Generation 用于强电子束产生的便携式低成本千兆瓦脉冲电源

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300754

R. Verma, A. Shyam, S. Chaturvedi, R. Kumar, D. Lathi, V. Chaudhary, R. Shukla, K. Debnath, S. Sharma, J. Sonara, K. Shah, B. Adhikary, R. Thakkar, B. Chauhan

{"title":"Portable & Low Cost Giga-Watt Pulsed Power Source for Intense Electron Beam Generation","authors":"R. Verma, A. Shyam, S. Chaturvedi, R. Kumar, D. Lathi, V. Chaudhary, R. Shukla, K. Debnath, S. Sharma, J. Sonara, K. Shah, B. Adhikary, R. Thakkar, B. Chauhan","doi":"10.1109/PPC.2005.300754","DOIUrl":"https://doi.org/10.1109/PPC.2005.300754","url":null,"abstract":"An alternative approach for applications requiring production of intense electron beam without using conventional configuration of Marx/Tesla accompanying Pulse Forming Line has been explored. The developed portable system utilizes four stage Blumlein pulse forming network made from inexpensive commercially available URM-67 coaxial cables having characteristic impedance of 50Omega. All stages are charged in parallel and then synchronously discharged through single low inductance railgap switch. Use of low jitter (<5 ns) railgap switch allows synchronization with other events and improves reproducibility of the system. Each stage of Blumlein is configured as eight parallel pulse forming network, with a resultant output impedance of 6.25 Omega per stage. For four stages the output impedance is therefore 25 Omega. A 24 V battery driven 50 kV DC to DC Converter has been used for charging the system. The generator is capable of delivering power up to 200 kV, 4 kA across matched load of 50 Omega. The voltage pulse duration and rise time are 50 ns and 8 ns respectively. In the presented paper, generator construction has been described and performance of the system is evaluated to realize adverse effect of parasitic impedance on the voltage gain and pulse shape. Also its operation has been simulated by PSPICE circuit simulator program and good agreement has been obtained between simulated and experimental results. The entire cost of the generator including raw material and labor is under US $2500. Other than low cost of the generator, added advantage of cable based system is that - the slow DC charging of transmission line to a known voltage eliminates the possibility of diode voltage prepulse in electron beam generation experiments. Applications of this pulse generator also include flash X- ray generation, breakdown tests, ion implantation, streamer discharge studies, ultra wideband generation etc.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124023506","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: 4

Design of a Vacuum Coaxial Line for Astérix to Study the Behavior of a MITL at High Voltage 为研究MITL在高压下的行为而设计的astrix真空同轴线

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300756

M. Toury, J. Delvaux, E. Merle, C. Vermare, L. Veron

{"title":"Design of a Vacuum Coaxial Line for Astérix to Study the Behavior of a MITL at High Voltage","authors":"M. Toury, J. Delvaux, E. Merle, C. Vermare, L. Veron","doi":"10.1109/PPC.2005.300756","DOIUrl":"https://doi.org/10.1109/PPC.2005.300756","url":null,"abstract":"AT PEM (Polygone d'Experimentation de Moronvilliers), the CEA will build a flash x-ray generator based on LTD technology. In this machine, the electrical energy is transmitted to the X-ray diode by a MITL (magnetically insulated transmission line). To study the behavior of this kind of high voltage line and the energy fed to the diode, the CEA has undertaken to install a new coaxial line on the Marx generator ASTERIX, located at the CEG (Centre d'Etudes de Gramat). This modification will associate to the present vacuum line, a new element that will increase the radius of the internal conductor and decrease the radius of the external conductor to the dimensions of the future LTD generator line. Also it will increase the length of the line to study with more details the MITL behavior. To design this new element and optimize the different dimensions, PIC simulations with the LSP code were used. They permit to control magnetic insulation by taking into account the electronic current flow along the internal conductor and to show the effects of this addition on the Marx bank. In this paper, the design of this additional element and the different simulation results are presented. Also, the different diagnostics needed to characterize the power transmission and the magnetically insulation are specified.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121192706","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

Comparison of Ultra-Compact Seed Sources for MFCG's MFCG超紧凑种子源的比较

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300637

J. Walter, D. Hemmert

引用次数: 4

Initial Design and Results from an Ion Current Collection Diagnostic for the Triggered Plasma Opening Switch Experiment 触发等离子体开关实验中离子电流采集诊断的初步设计和结果

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300745

D. Jackson, M. Savage, D. Seidel, C. Mendel, M. Gilmore

引用次数: 0