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IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-25 DOI: 10.1109/TPS.2024.3412532

Edl Schamiloglu

引用次数: 0

Investigation in Forced Shifts of Current on the Dynamic Armature and Rail Interface 动态电枢和钢轨界面上电流强制移位的研究

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-25 DOI: 10.1109/TPS.2024.3481051

Jinghan Xu;Shengguo Xia;Anbang Gu;Lixue Chen;Chengxian Li;Hongdan Yang

{"title":"Investigation in Forced Shifts of Current on the Dynamic Armature and Rail Interface","authors":"Jinghan Xu;Shengguo Xia;Anbang Gu;Lixue Chen;Chengxian Li;Hongdan Yang","doi":"10.1109/TPS.2024.3481051","DOIUrl":"https://doi.org/10.1109/TPS.2024.3481051","url":null,"abstract":"The armature and rail (A/R) interface in railgun is considered a dynamic electrical contact involving contact pressure and area variations, and the extreme working conditions lead to distinct electromagnetic properties from the bulk and perfect contact. This article investigates the mechanical and electromagnetic properties of the dynamic A/R interface based on imperfect contact boundary conditions. The contact area expands as the driving current increases, which increases the current distributed area and enhances uniformity. The current redistribution patterns are identified as forced shifts of current, with currents on the previous contact area boundaries decreasing and those on the existing boundaries increasing sharply. The analysis results indicate that the electric scalar potential difference and contact conductivity dominate the current variations on previous and existing boundaries, respectively. In other words, the conduction current and the contact state are the primary factors causing forced shifts of current rather than the induction current. Furthermore, the influences of dynamic contact conditions on the electric scalar potential difference are studied, and the results indicate that contact area variation has a more significant impact on the electric scalar potential difference. As the contact area changes, the conduction current paths shift with contact area boundaries, which causes variations in electric scalar potential differences, consequently, leading to the phenomenon of forced current shifts.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 9","pages":"4727-4734"},"PeriodicalIF":1.3,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transient Analysis of Absorption Characteristics of Argon Plasma Column Array Under High-Power Microwave Irradiation 大功率微波辐照下氩等离子体柱阵列的瞬态吸收特性分析

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-25 DOI: 10.1109/TPS.2024.3479281

Zhengming Tang;Yusen Yang;Lin Wang

{"title":"Transient Analysis of Absorption Characteristics of Argon Plasma Column Array Under High-Power Microwave Irradiation","authors":"Zhengming Tang;Yusen Yang;Lin Wang","doi":"10.1109/TPS.2024.3479281","DOIUrl":"https://doi.org/10.1109/TPS.2024.3479281","url":null,"abstract":"This article mainly focuses on the absorption properties of microwave plasma. Based on the plasma fluid method, plasma column array structures are proposed to study the transmission of high-power microwave (HPM) pulses. The damping effect of the plasma column array on HPM with different plasma column gap widths, different plasma column radius lengths and a double-layer plasma column array in combination with an absorbing material structure is investigated. The physical process and mechanism of plasma shielding effect on high-power microwaves are determined. The results suggest that large gaps between the plasma columns weaken the absorption and reflection of electromagnetic (EM) waves by the plasma column array. Increasing the plasma column radius can improve the absorption and reflection of EM waves and realize the limiting function. In addition, the double-layer plasma column array structure combined with absorbing material can prevent the loss of EM waves and optimally achieve the EM wave absorption effect. This study can provide more effective guidelines for microwave protection applications.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 9","pages":"4562-4569"},"PeriodicalIF":1.3,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-25 DOI: 10.1109/TPS.2024.3471091

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IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-25 DOI: 10.1109/TPS.2024.3477871

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Guest Editorial Special Issue on Plenary, Invited, and Selected Papers From the Third International Conference on Advances in Plasma Science and Technology (ICAPST-23) 第三届等离子体科学与技术进展国际会议 (ICAPST-23) 全会论文、特邀论文和精选论文特刊客座编辑

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-25 DOI: 10.1109/TPS.2024.3465129

K. Navaneetha Pandiyaraj;Rajendra R. Deshmukh;Anthony B. Murphy;Rino Morent;Truell Hyde;Shu Lai;Francesco Taccogna;Steven J. Gitomer

引用次数: 0

A Review on Megavolt Pulsed Switches and Their Time Delay Jitters 兆伏脉冲开关及其时延抖动研究进展

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-24 DOI: 10.1109/TPS.2024.3477737

Tianchi Wang;Yingchao Du;Wei Chen

{"title":"A Review on Megavolt Pulsed Switches and Their Time Delay Jitters","authors":"Tianchi Wang;Yingchao Du;Wei Chen","doi":"10.1109/TPS.2024.3477737","DOIUrl":"https://doi.org/10.1109/TPS.2024.3477737","url":null,"abstract":"In large pulsed power drivers for the research of high-energy-density physics (HEDP) and high power electromagnetic (HPEM), megavolt pulsed gas switches are crucial and indispensable components that transfer energy and compress the pulse. Their working conditions and characteristics are remarkably different. Their time delay jitter under pulsed voltage is a key indicator that influences the pulsed power driver’s output waveform quality and stability. This article summarized the megavolt pulsed switches and their time delay jitters. First, the composition of the large pulsed power driver’s time delay and jitter and the influence of the megavolt switch are analyzed. Then, the configurations and working parameters such as the time delay jitter of three types of existent megavolt switches (self-breakdown, self-triggered, and externally triggered switches) are introduced. After summarizing the research progress of the time delay jitter characteristics of megavolt switches, the experimental, theoretical, and simulative approaches are discussed. The breakdown probability distribution model provides a tool for analyzing the megavolt switches’ time delay and jitter. Based on the framework of the probability distribution model and relevant experimental phenomena, the general methods to reduce the jitter in single-stage and multistage switches are extracted.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 9","pages":"4655-4670"},"PeriodicalIF":1.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compact Wide Range High-Voltage/Current Impulse Generator for Simulating Various Indirect Effects of Lightning 用于模拟各种雷电间接效应的紧凑型宽范围高电压/电流脉冲发生器

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-24 DOI: 10.1109/TPS.2024.3479210

Woo-Cheol Jeong;Su-Mi Park;Hong-Je Ryoo

{"title":"Compact Wide Range High-Voltage/Current Impulse Generator for Simulating Various Indirect Effects of Lightning","authors":"Woo-Cheol Jeong;Su-Mi Park;Hong-Je Ryoo","doi":"10.1109/TPS.2024.3479210","DOIUrl":"https://doi.org/10.1109/TPS.2024.3479210","url":null,"abstract":"In this study, a high-voltage, high-current impulse generator to evaluate the indirect effects of lightning was developed. The impulse generator was designed to meet 14 distinct conditions necessary for simulating various lightning-induced scenarios. To accommodate these diverse requirements, pulse forming networks (PFNs) incorporating passive elements and high-repetition-rate semiconductor switches for high voltage and current was designed. The major challenge addressed in this research was the design of a high-voltage capacitor charger (HVCC) that can efficiently supply the required energy under each specified condition with a single unit. Because it should rapidly and repeatedly charge capacitors that vary in size by up to 40 000 times. Therefore, unlike typical HVCC designs that are optimized based on a specific voltage or current, this study selected two output currents as part of the HVCC design process, taking into account capacitor size, charging speed, and precision, along with various output voltage conditions. The HVCC was designed based on an analysis of an inductor-capacitor–capacitor (LCC) resonant converter utilizing a trapezoidal resonant current. It was designed to maintain a consistent target output current across a wide range of output voltages and capacitor conditions, while minimizing the stress on switches. Additionally, an appropriate structural design was incorporated to handle high voltages. The HVCC has been experimentally verified to precisely charge a wide range of load capacitors (from 1 to 38 500 nF) with high voltage (up to 11 kV) at a rapid repetition rate (up to 11 kHz). Additionally, through integrated experiments with the PFN, it has been experimentally verified that the system can precisely output impulses at all targeted conditions, including high-voltage impulses of 3300 V at a rapid repetition rate of 11 kHz and high-current impulses of 5100 A.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 9","pages":"4639-4647"},"PeriodicalIF":1.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Impact of the Generalized (r, q) Distributed Electrons on the Formation of Solitary Wave Structure in Magnetized Negative Ion Plasma 广义（r，q）分布电子对磁化负离子等离子体中孤波结构形成的影响

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-24 DOI: 10.1109/TPS.2024.3472696

N. Akhtar;S. Hussain

引用次数: 0

The Requirements for the Fast Interlock System of Wendelstein 7-X 对Wendelstein 7-X快速联锁系统的要求

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-10-24 DOI: 10.1109/TPS.2024.3391509

Sven Degenkolbe;Hans-Stephan Bosch;Olaf Grulke;Jörg Schacht;Erik Scharff;Reinhard Vilbrandt;Axel Winter

引用次数: 0