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

Investigating Distribution Characteristics of Electromagnetic Reflection Intensity and Intrapulse Doppler Frequency Coupling Mechanism of Plasma-Sheath-Covered Target

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2024.3382774

Bowen Bai;Dongsheng Zhao;Zixuan Chang;Yi Ding

{"title":"Investigating Distribution Characteristics of Electromagnetic Reflection Intensity and Intrapulse Doppler Frequency Coupling Mechanism of Plasma-Sheath-Covered Target","authors":"Bowen Bai;Dongsheng Zhao;Zixuan Chang;Yi Ding","doi":"10.1109/TPS.2024.3382774","DOIUrl":"https://doi.org/10.1109/TPS.2024.3382774","url":null,"abstract":"Due to the high velocity of hypersonic target, the target surface is covered with plasma sheath. For radar detecting on hypersonic target, the spatial distribution characteristics of plasma sheath cause significant differences in echo intensity and frequency offset at different areas of the target surface. In order to further investigate the reflection characteristics of each area of the target, this study adopts a difference-equivalent transmission line method to calculate the distribution characteristics of reflection intensity of the plasma-sheath-covered target and reveals the coupling mechanism of intrapulse Doppler frequency of the reflected wave by utilizing frequency offset effect. First, based on numerical calculation results of surface flow field, we analyzed the spatial distribution characteristics of the electron density and velocity of the plasma sheath. Second, we obtained the influence laws at different altitudes and carrier frequencies on the reflection intensity distribution and frequency offset of the plasma-sheath-covered target in each area. Finally, by constructing 1-D range profile of target radar echo, we further revealed the influence mechanism of the reflection characteristics of plasma-sheath-covered target on radar detection. Our research results lay a solid theoretical foundation for calculating the scattering characteristics of plasma-sheath-covered targets, reliable and robust radar detection, and even electromagnetic (EM) stealth performance under active modulation.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 2","pages":"220-229"},"PeriodicalIF":1.3,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512959","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

Study on the Formation Mechanism of Soil Discharge Dark Space Under Negative DC Voltage

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2025.3532919

Yong Yang;Yuxin Lu;Chuan Li;Huan Chen;Shuai Yang;Ruohan Wu

{"title":"Study on the Formation Mechanism of Soil Discharge Dark Space Under Negative DC Voltage","authors":"Yong Yang;Yuxin Lu;Chuan Li;Huan Chen;Shuai Yang;Ruohan Wu","doi":"10.1109/TPS.2025.3532919","DOIUrl":"https://doi.org/10.1109/TPS.2025.3532919","url":null,"abstract":"In recent years, there has been a notable increase in research activity concerning the remediation of soil using nonthermal plasmas (NTPs), as well as the study of discharges in soil. In examining the phenomenon of soil discharges under negative direct current (dc), researchers have identified the presence of discharge dark spaces. It is well established that the Faraday dark space is present under negative glow discharge. However, no instance of the discharge of dark space has been documented in soil discharges. It is noteworthy that, akin to the dark spaces observed in gas discharges, which occur exclusively in negative glow discharges, soil dark spaces are only discernible under negative dc discharges. Nevertheless, the underlying mechanism responsible for their formation remains elusive. In order to gain a deeper understanding of the mechanism of soil discharges and the formation of dark space regions, a new model of soil discharges is proposed in this study. Based on this model, we derived an expression for the extent of the dark space region. Furthermore, we explored the effect of the dark space region on soil discharge. These studies facilitate the development of technologies for the remediation of pollutants by soil discharge and provide new insights for further research on the potential mechanisms of soil discharge.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 2","pages":"213-219"},"PeriodicalIF":1.3,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512970","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

Effect of Tip Distribution on Plasma Energy Efficiency in Pulsed Multitip-Plane Corona Discharge at Atmospheric Pressure in Dry and Humid Air

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2025.3533097

Karim Saber;Alyen Abahazem;Nofel Merbahi;Mohammed Yousfi;Hasna Guedah

{"title":"Effect of Tip Distribution on Plasma Energy Efficiency in Pulsed Multitip-Plane Corona Discharge at Atmospheric Pressure in Dry and Humid Air","authors":"Karim Saber;Alyen Abahazem;Nofel Merbahi;Mohammed Yousfi;Hasna Guedah","doi":"10.1109/TPS.2025.3533097","DOIUrl":"https://doi.org/10.1109/TPS.2025.3533097","url":null,"abstract":"This study uses an electrical discharge model. It examines how intertip distance affects energy delivered to a reactor tip-plane configuration. The results are validated against previous experimental measurements. Increasing the intertip distance from 5 to 20 mm in dry air results in a proportional increase in delivered energy. The study also evaluates discharge energy, which is useful energy. It shows a loss of energy at 5 mm, but useful energy at 20 mm. Analysis of energy efficiency for different distances shows a significant improvement, varying from 45% to 88%. A subsequent study in humid air shows that no energy is lost beyond 15 mm. The study also looks at how the tip number affects the reactor’s energy delivery. It found that energy delivery increased with the number of tips. However, efficiencies decreased due to mutual effects between tips. As a result, plasma energy efficiency decreased by up to 35% despite the increase in the tip number. These results stress the key role of the threshold distance. It is vital for better energy efficiency and full coverage of target surfaces.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 2","pages":"259-264"},"PeriodicalIF":1.3,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512965","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

Skin Cancer Detection Using Terahertz Metamaterial Absorber and Machine Learning

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2025.3531426

Sagnik Banerjee;Mohammad S. Khan;Uddipan Nath;Santosh Kumar Mishra;Bhargav Appasani

{"title":"Skin Cancer Detection Using Terahertz Metamaterial Absorber and Machine Learning","authors":"Sagnik Banerjee;Mohammad S. Khan;Uddipan Nath;Santosh Kumar Mishra;Bhargav Appasani","doi":"10.1109/TPS.2025.3531426","DOIUrl":"https://doi.org/10.1109/TPS.2025.3531426","url":null,"abstract":"This research aims to propose a terahertz metamaterial-based absorber that can sense the alterations in the enclosing medium’s refractive index. The suggested layout comprises a pair of concentric resonators made of gold, each resembling a ring in shape, and is mounted upon a substrate comprising of gallium arsenide (GaAs). The periodicity of the unit cell in this design is only <inline-formula> <tex-math>$48~mu $ </tex-math></inline-formula>m. At 2.47 THz, it achieves a high-quality factor (Q-factor) of 61.75 and a nearly perfect absorption of 99.50%. Parametric analyses have been performed to support the selection of the parameters used in the design. Modifications in the polarization angle do not affect the design and the absorption spectra. Because numerous biomedical samples fall within this range, the refractive index has been adjusted within the range of 1.35 to 1.39. Using the proposed sensor, 560 absorption spectra are obtained for different polarization angles, incident angles, and cell specimens of normal and cancerous skin tissue. Different machine learning algorithms have been used to classify the cells based on the absorption spectrum obtained from the proposed sensor with an accuracy of 100% and a precision and recall of 100% and 100%, respectively, on the test data. The proposed work can pave the way for future research combining machine learning and sensing at the terahertz frequency.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 2","pages":"343-350"},"PeriodicalIF":1.3,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512939","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

Electrostatic Probe Measurements in an Expanding Plasma Jet

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2025.3531215

Jens Schmidt;René Laufer;Georg Herdrich;Truell W. Hyde

引用次数: 0

Investigation of the Effect of High Frequency and Ambient Gas on Ignition and Damping of Barrier Discharge

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2025.3533421

Mustafa Saglam;Fevzi Hansu

{"title":"Investigation of the Effect of High Frequency and Ambient Gas on Ignition and Damping of Barrier Discharge","authors":"Mustafa Saglam;Fevzi Hansu","doi":"10.1109/TPS.2025.3533421","DOIUrl":"https://doi.org/10.1109/TPS.2025.3533421","url":null,"abstract":"Determining the ignition and damping voltage values of dielectric barrier discharge (DBD) at various frequencies and in different gas ambients is important regarding lighting techniques and various industrial applications. DBDs can be operated with sinusoidal or square-wave currents between line frequency and microwave frequencies or with special pulsed waveforms. For large-scale industrial applications, power supplies operating between 500 Hz and 500 kHz are preferred. In this study, an experimental application was carried out to determine the current and voltage parameters in the damping and ignition of DBD at various frequencies and in different gas ambients. Within the scope of the study, the supply voltage was gradually applied at certain frequencies to the cylindrical plane electrode system placed in a specially designed closed and vacuumable reactor, these experiments were also repeated in various gas environments, and the voltage-current (V–I) measurements of the system were made. According to the results, it was observed that the frequency and gas type had a significant effect on the discharge damping and ignition voltages and that increasing the frequency significantly facilitated the ignition of the DBD. Similarly, the conductivity of the ambient gas significantly reduced the ignition voltage level of the DBD.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 2","pages":"311-316"},"PeriodicalIF":1.3,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512863","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

Accelerated Plasma Spraying of Cu/Alumina Ceramics Based on Electromagnetic Pulse Welding: Simulation and Experiments

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2025.3531962

Chengxiang Li;Shiyu Weng;Chennan Xu;Dan Chen;Yan Zhou

{"title":"Accelerated Plasma Spraying of Cu/Alumina Ceramics Based on Electromagnetic Pulse Welding: Simulation and Experiments","authors":"Chengxiang Li;Shiyu Weng;Chennan Xu;Dan Chen;Yan Zhou","doi":"10.1109/TPS.2025.3531962","DOIUrl":"https://doi.org/10.1109/TPS.2025.3531962","url":null,"abstract":"Cu is widely used to fabricate highly efficient conductive coatings in the power electronics industry due to its exceptional electrical and ductility. To achieve higher spraying speed and better Cu coating quality, this article deeply studied the method of accelerated plasma spraying (APS) based on electromagnetic pulse welding (EMPW). A multiphysical field simulation model was constructed to study the plasma and Cu powder motion processes. The electromagnetic parameters, temperature, and Cu powder velocity were obtained. The relationship between electrode parameters and the Lorentz force was obtained by combining the plasma equation of motion with numerical analysis. The velocity of the Cu powder motion was obtained through the capture of the spraying process. The findings revealed that the electrode spacing exerted an influence on the plasma motion. The simultaneous impact of the compression shock wave and the Lorentz force propelled the Cu powder, which remained in the solid state, toward the ceramic. The Cu powder speed reached 1024 m/s and the maximum Cu coating thickness of <inline-formula> <tex-math>$140~mu $ </tex-math></inline-formula>m was obtained when the discharge voltage was 5 kV. This study elucidated the mechanism of APS based on EMPW, thereby providing a theoretical foundation for APS in mechanism analysis and future applications.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 2","pages":"301-310"},"PeriodicalIF":1.3,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512865","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

Fabrication of Gold Nanoparticle-Masked ITO Nanopillars Using Argon Plasma Etching: Utilization and Application in the Thin c-Si Flexible Solar Cell

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2025.3533101

Arijit Bardhan Roy

{"title":"Fabrication of Gold Nanoparticle-Masked ITO Nanopillars Using Argon Plasma Etching: Utilization and Application in the Thin c-Si Flexible Solar Cell","authors":"Arijit Bardhan Roy","doi":"10.1109/TPS.2025.3533101","DOIUrl":"https://doi.org/10.1109/TPS.2025.3533101","url":null,"abstract":"Fabrication procedure and utilization of gold nanoparticles (NPs)-masked indium tin oxide (ITO) nanopillars using argon plasma etching was reported in this article. As we know that due to lack of substrate thickness, some fractions of photons are not absorbed by thin crystalline silicon solar cells. This issue may be answered by reported ITO nanopillar geometry embedded on top of the device provided by multiple bounces and super scattering of light. Further, this type of nanostructuring happened only on top of the anti-reflection coating (ARC), so it will be incapable to add on any surface recombination of generated carriers. In this work, the author applied this nanopillar geometry on top of the thin silicon heterojunction solar cell (p-type crystalline thin substrate with n-type amorphous layer) using Au-masked Argon plasma etching and some noticeable enhancement of short circuit current (approximately 50%) and output efficiency (more than 30%) was achieved compared to flat ITO coated cells. These values established the utilization of ITO nanopillars as an anti-reflective coating on thin c-Si solar cells through this reported study and these results also validated by electric field and integrated reflection-based profiles received from finite element method (FEM)-based simulation studies. Finally, at the end of this study, author prolifically realized thin c-Si-based solar cell with <inline-formula> <tex-math>$20~pm ~5~mu $ </tex-math></inline-formula> m substrate thickness and an effective light management design offered by ITO nanopillars.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 2","pages":"206-212"},"PeriodicalIF":1.3,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512961","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

Sensitivity Studies of Power Deposition Computed on Tokamak First Wall

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-02-04 DOI: 10.1109/TPS.2024.3485530

Wayne Arter

引用次数: 0

Delay and Jitter Characteristics of Fast-Triggered Cold Cathode Switches and Their Discharge Circuits

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-01-30 DOI: 10.1109/TPS.2024.3522338

Zhaoxiang Wang;Guisheng Jiang;Yijun Zheng;Hongliang Ma;Yu Liu;Ziren Zhu;Yinhui Yang;Zefan Huang;Lin Chen;Rongqing Tan

{"title":"Delay and Jitter Characteristics of Fast-Triggered Cold Cathode Switches and Their Discharge Circuits","authors":"Zhaoxiang Wang;Guisheng Jiang;Yijun Zheng;Hongliang Ma;Yu Liu;Ziren Zhu;Yinhui Yang;Zefan Huang;Lin Chen;Rongqing Tan","doi":"10.1109/TPS.2024.3522338","DOIUrl":"https://doi.org/10.1109/TPS.2024.3522338","url":null,"abstract":"Based on gas discharge theory incorporating enhanced distorted electric fields, refines the delay calculation formula for three-electrode spark-gap switches, thereby improving the accuracy of theoretical predictions. Additionally, the relationships between the delay and jitter of the spark-gap switch and variations in trigger voltage, operating voltage, gas pressure, and main electrode spacing were comprehensively examined. From the perspective of microscopic particles, the physical mechanisms by which these factors influence breakdown delay and discharge jitter were elucidated. By comparing the magnitude of each factor’s impact, the most critical factors affecting the breakdown delay and jitter of the spark-gap switch under conditions using a TEA CO2 laser as a load were identified, and discharge jitter was further reduced. Experimental results indicate that the rise rates of operating voltage and trigger voltage are the key parameters affecting the delay and jitter of the spark-gap switch, while the influence of other factors is relatively minor. Furthermore, the corrected delay calculation formula aligns well with the experimental results. This research not only provides a reference for delay prediction but also offers a low-jitter solution for laser oscillator-amplifier systems based on synchronized pulse discharge.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 2","pages":"276-283"},"PeriodicalIF":1.3,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512765","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