IEEE Transactions on Plasma Science最新文献_第3页

Electrostatic Ion-Acoustic Waves in a Magnetized Positively Charged Dust Plasma in the Presence of Trapped Electrons 存在俘获电子的磁化正电荷尘埃等离子体中的静电离子声波

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-30 DOI: 10.1109/TPS.2023.3304199

M. M. Orani;Jhorna Akter;A. A. Mamun

{"title":"Electrostatic Ion-Acoustic Waves in a Magnetized Positively Charged Dust Plasma in the Presence of Trapped Electrons","authors":"M. M. Orani;Jhorna Akter;A. A. Mamun","doi":"10.1109/TPS.2023.3304199","DOIUrl":"https://doi.org/10.1109/TPS.2023.3304199","url":null,"abstract":"Oblique propagation of modified ion-acoustic (MIA) solitary and shock waves in magnetized dusty plasmas has been investigated theoretically. The plasma system is assumed to contain hot trapped electrons following vortex-like Schamel distribution function, warm ions, and positively charged dust (PCD) species. The linear dispersion relation for the MIA wave has been obtained. The Korteweg–de Vries (K-dV), such as Schamel equation (also known as modified K-dV equation) and modified Burgers equation, has been derived by employing the reductive perturbation method along with their corresponding solutions, which enable us to study the waves analytically and numerically. The basic features (amplitude, width, speed, polarity, and obliqueness) of ion-acoustic nonlinear waves are found to be significantly modified by different plasma parameters and are discussed briefly. The considered plasma system supports compressive solitary and shock waves only. The presence of hot trapped electrons, PCD, and warm ions raises the wave amplitude, whereas the inclusion of an external magnetic field widens the wave. The increasing viscosity of a medium broadens the wave. The findings of this investigation may be implied in interpreting various nonlinear phenomena formed in many space environments, such as aurora and Saturn’s rings, and laboratory devices, such as tokamaks.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"51 9","pages":"2705-2716"},"PeriodicalIF":1.5,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41228276","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

Research on Critical Trigger Criterion of Multistage Synchronous Induction Coilgun 多级同步感应线圈枪临界触发判据的研究

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-30 DOI: 10.1109/TPS.2023.3306329

Xiaobo Niu;Lei Chen;Yunzhu An;Yuanchao Hu

引用次数: 0

Research on the Contact Characteristics of the Armature-Rail Considering the Wear Amount of the C-Shaped Solid Armature 考虑C形固体电枢磨损量的电枢轨道接触特性研究

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-30 DOI: 10.1109/TPS.2023.3305117

Fan Yang;Xiaofei Zhai;Hua Liu;Zhiran Peng

{"title":"Research on the Contact Characteristics of the Armature-Rail Considering the Wear Amount of the C-Shaped Solid Armature","authors":"Fan Yang;Xiaofei Zhai;Hua Liu;Zhiran Peng","doi":"10.1109/TPS.2023.3305117","DOIUrl":"https://doi.org/10.1109/TPS.2023.3305117","url":null,"abstract":"The friction and wear characteristics of a C-shaped solid armature surface are the important factors affecting the electric contact of the armature-rail during electromagnetic rail launch. In order to judge whether the electrical contact state of the armature-rail is good and whether there is a transition during the launch process, this article proposes a theoretical analysis model of the armature-rail contact force considering the stiffness change of the armature arm after wear, and the nodal force and nodal temperature are extracted through finite element multiphysics coupling and mapped to the structural field with Johnson-Cook material damage failure for dynamic calculation of armature arm wear and armature-rail contact force. The simulation results show that the wear state of the armature arm, the change rule of armature wear mass, the velocity of armature after wear, and the change of armature-rail contact force after wear are consistent with the launch experimental phenomenon and the measured data, which verifies the accuracy of the finite element model for calculating the wear amount and armature-rail contact force. On this basis, the effects of different armature arm tail interference and different peak-to-average current waveforms on armature arm wear and armature-rail contact characteristics are considered. The simulation results show that the contact force curve of the armature-rail after considering wear is above the contact force curve required by the “10 N/kA” principle, and it can be considered that the armature-rail contact state is good. The calculation model of armature arm wear and armature-rail contact force established in this article can be used in the subsequent optimization design of C-shaped solid armature.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"51 9","pages":"2726-2735"},"PeriodicalIF":1.5,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41228095","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

Theoretical Study on the Impacts of Time-Varying Reentry Vehicles Plasma Sheath on the Terahertz Array Antenna Performance 时变再入飞行器等离子体鞘对太赫兹阵列天线性能影响的理论研究

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-30 DOI: 10.1109/TPS.2023.3305019

Yuxin Ni;Ziyang Zhao;Kai Yuan;Rongxin Tang;Lujun Hong

{"title":"Theoretical Study on the Impacts of Time-Varying Reentry Vehicles Plasma Sheath on the Terahertz Array Antenna Performance","authors":"Yuxin Ni;Ziyang Zhao;Kai Yuan;Rongxin Tang;Lujun Hong","doi":"10.1109/TPS.2023.3305019","DOIUrl":"https://doi.org/10.1109/TPS.2023.3305019","url":null,"abstract":"The communication blackout used to occur on reentry vehicles in near space. Previous studies in recent years have shown that terahertz (THz) communication is a potential solution to the blackout problem. Most previous studies consider the plasma sheath surrounding the reentry vehicle as a static plasma layer, although the plasma sheath always keeps evolving. In such a case, the impact of time-varying and inhomogeneous plasma distribution on the performance of vehicle antennas was rarely investigated. In this study, a plasma sheath evolution model for reentry vehicles was developed, and the evolution of the plasma sheath was obtained via numerical solution. In addition, a THz array antenna was introduced in order to investigate the effect of time-varying plasma sheath on antenna performance. The results indicate that during the reentry process of the vehicle, the antenna gain, antenna directivity, and antenna return loss vary dynamically and drastically. The performance of the onboard antenna during the reentry process is unstable, which affects the performance of the vehicle communication system. Finally, the mechanism of antenna performance variation is analyzed, and the corresponding optimization scheme to ensure the antenna performance in the plasma sheath is discussed. The present study is helpful in understanding the complexity of electromagnetic propagation in a self-consistently changing reentry plasma sheath.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"51 9","pages":"2736-2741"},"PeriodicalIF":1.5,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41228098","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

Research on Homopolar Inductor Alternator With a Short-Circuit Compensated Winding in CCPS System CCPS系统中带短路补偿绕组的单极电感交流发电机的研究

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-30 DOI: 10.1109/TPS.2023.3293153

Songlin Guo;Kexun Yu;Zhengkang Yi;Xianfei Xie

引用次数: 0

Analysis of Microgap Electrostatic Discharge Parameters With Algorithms of Neural Network and Wavelet Transform 用神经网络和小波变换算法分析微间隙静电放电参数

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-30 DOI: 10.1109/TPS.2023.3298800

Fangming Ruan;Kai Xu;Yang Meng;Wenli Wang;Sheng Guan;Kui Zhou;Cheng Yang;Yanli Chen

{"title":"Analysis of Microgap Electrostatic Discharge Parameters With Algorithms of Neural Network and Wavelet Transform","authors":"Fangming Ruan;Kai Xu;Yang Meng;Wenli Wang;Sheng Guan;Kui Zhou;Cheng Yang;Yanli Chen","doi":"10.1109/TPS.2023.3298800","DOIUrl":"https://doi.org/10.1109/TPS.2023.3298800","url":null,"abstract":"Special relationship exists between environmental conditions and discharge characteristic parameters in microgap electrostatic discharge (ESD) events. Potential relations between input and output of neural network can be explored if taken discharge environmental factors as neural network input. The characteristic parameters of discharge results are affected by environmental conditions, and hence, discharge parameters can be described with an output of neural network. Circumstances factors effect on discharge parameters in microgap ESD result was analyzed with two algorithms of neural network wavelet transform combined with Kalman filter. Nonlinear relationship between circumstances conditions and discharge result effect was a feature in microgap ESD events. Strong positive relationship existed between discharge parameters and circumstances factors of electrode moving speed, gas pressure, and temperature. Characteristic parameters measured in real ESD experiment were compared to predictive parameters of calculation result from neural network algorithm. The analysis of accuracies was given on the prediction of discharge process trend compared to discharge current data measured in experiment. Noise in discharge current waveforms can be suppressed effectively with the method of wavelet transform combined with Kalman filter.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"51 9","pages":"2602-2607"},"PeriodicalIF":1.5,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41228308","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

Rayleigh–Taylor Instability and Its Growth Rate in Complex Plasmas 复杂等离子体中的瑞利-泰勒不稳定性及其增长率

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-22 DOI: 10.1109/TPS.2023.3303883

Wei-Ping Zhang;Wen-Shan Duan

引用次数: 0

Design of Driving Power Supplies for Improvement of Thyratron Jitter Characteristic 改善闸流管抖动特性的驱动电源设计

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-22 DOI: 10.1109/TPS.2023.3303432

Tae-Hyun Kim;Shin Kim;Jung-Soo Bae;Seong-Ho Son;Chang-Hyun Kwon;Chan-Hun Yu;Hyoung-Suk Kim;Sung-Roc Jang;Suk-Ho Ahn

{"title":"Design of Driving Power Supplies for Improvement of Thyratron Jitter Characteristic","authors":"Tae-Hyun Kim;Shin Kim;Jung-Soo Bae;Seong-Ho Son;Chang-Hyun Kwon;Chan-Hun Yu;Hyoung-Suk Kim;Sung-Roc Jang;Suk-Ho Ahn","doi":"10.1109/TPS.2023.3303432","DOIUrl":"10.1109/TPS.2023.3303432","url":null,"abstract":"This article describes designs for power supplies for driving a high-power thyratron switch. To improve the delay time jitter of the thyratron, three driving power supplies (trigger, cathode heater, and reservoir heater) are designed. Based on inductive energy storage (IES) with an opening switch, the trigger power supply (TPS) is designed to generate controllable output pulse voltage (1–10 kV) as well as pulse energy (1–5 mJ) for investigating thyratron switching features. Depending on the specifications of the cathode heater (8 V, 100 A) and reservoir heater (8 V, 25 A) power supply, \u0000<inline-formula> <tex-math>${LCC}$ </tex-math></inline-formula>\u0000 resonant converters are designed to use their soft-switching properties. Since the output ripples affect the thyratron switching characteristics, the high-frequency operation of the converter allows for reducing ripples with a minimized output filter. Designs of three power supplies were verified from individual rated operations as well as experiments with L4888 thyratron. Switching features of the L4888 thyratron were analyzed based on operating conditions of power supplies and 152 ps of rms delay time jitter was achieved.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"51 10","pages":"2797-2804"},"PeriodicalIF":1.5,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62548982","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

Wave Transmission Through a Plasma-Loaded W-Band Photonic Crystal 等离子体负载w波段光子晶体的波传输

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-22 DOI: 10.1109/TPS.2023.3304189

Jeffrey Hopwood

引用次数: 0

Gyrokinetic Simulation of Kinetic Ballooning Mode and its Parametric Stabilization in Tokamak Plasmas With Impurities 含杂质托卡马克等离子体动力学气球模式的陀螺动力学模拟及其参数稳定

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2023-08-22 DOI: 10.1109/TPS.2023.3303420

Yong Shen;Jia-Qi Dong;Jia Li

{"title":"Gyrokinetic Simulation of Kinetic Ballooning Mode and its Parametric Stabilization in Tokamak Plasmas With Impurities","authors":"Yong Shen;Jia-Qi Dong;Jia Li","doi":"10.1109/TPS.2023.3303420","DOIUrl":"https://doi.org/10.1109/TPS.2023.3303420","url":null,"abstract":"Kinetic ballooning mode (KBM) and its parametric stabilization in tokamaks are studied qualitatively by means of gyrokinetic simulation. The circular magnetic tokamak discharge with the Shafranov shift is considered and the \u0000<inline-formula> <tex-math>$hat {s}-alpha $ </tex-math></inline-formula>\u0000 model equilibrium is employed. The kinetic characteristics of ions, such as Landau resonance, magnetic drift, and finite Larmor radius (FLR) are all taken into account. The full ion transit and toroidal drift effects are retained. Impurity effect is also included. As a result, the existence of, and approaching way to the second KBM stable regime were identified. It was first revealed that impurities play a role of stabilizing when the impurity density profile peaks in the same direction as those of the electron and main ion density profiles, owing to that compressibility effects is weakened. It shows that the mode maximum growth rate appears at the turning point of magnetic shear \u0000<inline-formula> <tex-math>$hat {s}_{c} =q /4-q/2$ </tex-math></inline-formula>\u0000, while the formula can be modified due to other plasma parameters such as \u0000<inline-formula> <tex-math>$eta _{i}$ </tex-math></inline-formula>\u0000 and impurity species. Some parametric stabilizations of KBM are suggested, including the accumulation of impurities toward the plasma center; and entering or approaching to the second stable regime by means of making the electron density or ion/electron temperature gradients high enough, by which the internal or edge transport barrier (ITB/ETB) is anticipated to be formed in many cases. In addition, we showed that the artificial control of safety factor and magnetic shear was also beneficial to the stabilization of ballooning mode.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"51 8","pages":"2134-2144"},"PeriodicalIF":1.5,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/27/10238335/10226549.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3507500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0