Fundamental Plasma Physics最新文献_第5页

High stability plasma illumination from micro discharges with nanodiamond decorated laser induced graphene electrodes 使用纳米金刚石装饰的激光诱导石墨烯电极进行微放电的高稳定性等离子体照明

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-03-30 DOI: 10.1016/j.fpp.2024.100047

S. Suman , S.K. Sethy , K.J. Sankaran

引用次数: 0

Surface modification of polymers by 50 Hz dielectric barrier discharge (DBD) plasma produced in air at 40 Torr 在 40 托空气中产生的 50 赫兹介质阻挡放电（DBD）等离子体对聚合物进行表面改性

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-05-14 DOI: 10.1016/j.fpp.2024.100058

Deepak Prasad Subedi, Rajesh Prakash Guragain, Ujjwal Man Joshi

{"title":"Surface modification of polymers by 50 Hz dielectric barrier discharge (DBD) plasma produced in air at 40 Torr","authors":"Deepak Prasad Subedi, Rajesh Prakash Guragain, Ujjwal Man Joshi","doi":"10.1016/j.fpp.2024.100058","DOIUrl":"10.1016/j.fpp.2024.100058","url":null,"abstract":"<div><p>This study deals with the surface modification of polymer films utilizing a custom designed cost- effective dielectric barrier discharge (DBD) plasma produced in air at reduced pressure. We comprehensively examine diverse aspects of surface modification, encompassing electrical discharge characterization, optical signal analysis, contact angle measurements, and surface morphology assessment. Our observations unveiled the presence of distinctive filamentary streamer-based micro-discharges during the DBD process, with a power consumption of approximately 5.64 W and an electron density of 3.4 × 10<sup>11</sup> cm<sup>−3</sup>. Optical emission spectroscopy identifies multiple emission peaks attributed to nitrogen emissions. Notably, plasma treatment substantially reduced the water contact angle and augmented surface energy on polypropylene (PP) and polyethylene terephthalate (PET) films. Surface morphology analysis illustrated an increase in surface roughness following plasma treatment. Intriguingly, the initial rapid alterations in wettability and surface morphology attained equilibrium after approximately 30 s of treatment. This study highlights atmospheric DBD plasma's effectiveness in customizing polymer surfaces, improving wettability and roughness, offering promising applications for enhanced adhesion and wetting.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"10 ","pages":"Article 100058"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772828524000232/pdfft?md5=812df3a553b453a87a7c8e3cdfd72b78&pid=1-s2.0-S2772828524000232-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141048877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scaling laws of the plasma velocity in visco-resistive magnetohydrodynamic systems 粘阻磁流体动力系统中等离子体速度的缩放规律

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-03-19 DOI: 10.1016/j.fpp.2024.100044

A. Krupka, M.-C. Firpo

引用次数: 0

Ionisation in nanowire by ultra-short relativistic laser pulse 超短相对论激光脉冲在纳米线中的电离作用

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-03-27 DOI: 10.1016/j.fpp.2024.100045

F.T.T. Houng , S.Y. Hoh , J.F. Ong

引用次数: 0

Possibility of inverse sheath in the lunar nightside due to secondary electron emission 二次电子发射导致月球夜面出现反向鞘的可能性

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-04-26 DOI: 10.1016/j.fpp.2024.100052

Trinesh Sana , S.K. Mishra

引用次数: 0

Electrostatic supersolitary waves: A challenging paradigm in nonlinear plasma science and beyond – State of the art and overview of recent results 静电超孤立波：非线性等离子体科学及其他领域的挑战性范例 - 技术现状和最新成果概览

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-04-18 DOI: 10.1016/j.fpp.2024.100048

Steffy Sara Varghese , Kuldeep Singh , Ioannis Kourakis

{"title":"Electrostatic supersolitary waves: A challenging paradigm in nonlinear plasma science and beyond – State of the art and overview of recent results","authors":"Steffy Sara Varghese , Kuldeep Singh , Ioannis Kourakis","doi":"10.1016/j.fpp.2024.100048","DOIUrl":"https://doi.org/10.1016/j.fpp.2024.100048","url":null,"abstract":"<div><p>A comprehensive overview is presented of recent theoretical advancements and observational manifestations of a relatively new type of electrostatic solitary wave (ESW), known as <em>supersoliton</em> or <em>supersolitary wave</em> (SSW). These nonlinear structures are characterized by a distorted pulse-shaped electrostatic potential excitations, deviating from the standard (“sech<sup>2</sup>”-like) form generally expected from solitonic pulses. In Space plasmas, in particular, e.g. in magnetospheric observations, SSWs may be associated with a characteristic wiggly bipolar electric field waveform. It has been shown that a three-component configuration is essential, as a minimum requirement for SSWs to occur in a plasma.</p><p>Various spacecraft missions have recorded evidence of “non-conventional” electrostatic solitary waves (pulses) such as wiggly bipolar pulses, offset bipolar pulses, and monopolar pairs. This review article aims to present the current state of the art in this fascinating new theme, first outlining the basic framework for the modeling of such “exotic” ESWs and then putting forward a correlation between SSW structures with certain non-standard bipolar electric field forms observed in planetary magnetospheres.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"10 ","pages":"Article 100048"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277282852400013X/pdfft?md5=49cbcd2a0e610c5b3f1408887a7e700c&pid=1-s2.0-S277282852400013X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140641202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation studies of γ-ray radiation in laser-plasma interactions with structured targets 激光等离子体与结构化目标相互作用中的γ射线辐射模拟研究

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-02-29 DOI: 10.1016/j.fpp.2024.100038

S. Chintalwad , S. Krishnamurthy , S. Morris , Lap Van Dao , B. Ramakrishna

{"title":"Simulation studies of γ-ray radiation in laser-plasma interactions with structured targets","authors":"S. Chintalwad , S. Krishnamurthy , S. Morris , Lap Van Dao , B. Ramakrishna","doi":"10.1016/j.fpp.2024.100038","DOIUrl":"https://doi.org/10.1016/j.fpp.2024.100038","url":null,"abstract":"<div><p>We studied the <em>γ</em>-ray emission from laser interactions with structured targets of Al and Au. Bremsstrahlung and Non-linear Compton Scattering (NCS) emission are considered for the <em>γ</em>-ray emission using the open source 2-D PIC code EPOCH. Different shapes of the target generated additional hot electrons, which helps to enhance the photon energy in individual cases. The enhancement of photon energy is due to the target's shape and the hot electrons. Hot electron generation and their dynamics, like refluxing behavior, are crucial phenomena in thin targets. This study uses four different shapes of Al and Au targets. The relative strength of emissions from both bremsstrahlung and NCS are compared. The shape of the target enhances the <em>γ</em>-ray energy, electron energy, and emitted photon number and improves the electron beam divergence. The effect of each target shape on hot electrons refluxing behavior and the role of the electric and magnetic fields are discussed in detail.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"10 ","pages":"Article 100038"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772828524000037/pdfft?md5=4718a01bdaf817de4d5a53c5c6198ca5&pid=1-s2.0-S2772828524000037-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140041812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal plasma processing of technologically important materials 重要技术材料的热等离子加工

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-02-22 DOI: 10.1016/j.fpp.2024.100039

Shalaka A. Kamble, Sanket Jangale, Somnath Bhopale, S.V. Bhoraskar, M.A. More, V.L. Mathe

{"title":"Thermal plasma processing of technologically important materials","authors":"Shalaka A. Kamble, Sanket Jangale, Somnath Bhopale, S.V. Bhoraskar, M.A. More, V.L. Mathe","doi":"10.1016/j.fpp.2024.100039","DOIUrl":"https://doi.org/10.1016/j.fpp.2024.100039","url":null,"abstract":"<div><p>Thermal plasma is one of the upcoming powerful tools used for materials processing. It covers a wide range of technological applications such as synthesis of various refractory ceramic materials, metals and alloys, deposition of coatings, high temperature processing of materials as well as disintegration of waste materials. Representative technologically important material systems viz rare earth hexaboride (e.g. GdB<sub>6</sub>) and carbonaceous materials are focus of the present manuscript. Both the material systems have been processed using DC thermal plasma route and characterized thoroughly for structural, morphological, surface properties using XRD, TEM, XPS respectively. Morphology of GdB<sub>6</sub> has been tailored by varying plasma parameters during synthesis. Further, these GdB<sub>6</sub> powder were investigated for electron emission performance using Field Electron Emission and maximum current density of 0.5 mA/cm<sup>2</sup> was noted for the nanocrystalline GdB<sub>6</sub> sample. Feasibility of thermal plasmas for production of nanocrystalline GdB<sub>6</sub> and processing of a bio-waste to obtain technologically important carbonaceous materials has also been explored.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"10 ","pages":"Article 100039"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772828524000049/pdfft?md5=e25eba63e7c12d8be72b88165c195445&pid=1-s2.0-S2772828524000049-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139992704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in high-order harmonic generation from laser-ablated plumes at the advanced laser light source laboratory 先进激光光源实验室激光照射羽流产生高阶谐波的最新进展

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-03-12 DOI: 10.1016/j.fpp.2024.100043

Mangaljit Singh , Muhammad Ashiq Fareed , Ramin Ghahri Shirinabadi , Romain Marcelino , Feng Zhu , François Légaré , Tsuneyuki Ozaki

{"title":"Recent advances in high-order harmonic generation from laser-ablated plumes at the advanced laser light source laboratory","authors":"Mangaljit Singh , Muhammad Ashiq Fareed , Ramin Ghahri Shirinabadi , Romain Marcelino , Feng Zhu , François Légaré , Tsuneyuki Ozaki","doi":"10.1016/j.fpp.2024.100043","DOIUrl":"https://doi.org/10.1016/j.fpp.2024.100043","url":null,"abstract":"<div><p>High-order harmonic generation is a nonlinear optical frequency conversion process that occurs during intense ultrafast laser-matter interaction. At the Advanced Laser Light Source laboratory, we use ultrafast laser pulses having diverse wavelengths, spanning visible, near- and mid-infrared ranges, to generate high-order harmonics from laser-ablated plumes in the extreme ultraviolet or soft X-ray region of the electromagnetic spectrum. The Advanced Laser Light Source Laboratory is situated within the Énergie Matériaux Télécommunications Center of the Institut national de la recherche scientifique in Montréal, Quebec, Canada. We focus on generating bright and broadband harmonics by exploiting various types of ultrafast resonances in different species within the laser-ablated plume, and use them for applications in ultrafast spectroscopy, imaging, and AMO science. We are also actively exploring previously unknown physics governing the harmonic generation from different resonances. In this review article, we provide an overview of the recent advancements made in these directions.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"10 ","pages":"Article 100043"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772828524000086/pdfft?md5=f5d27778e6916a463feebacd2983686f&pid=1-s2.0-S2772828524000086-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140162552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Model expressions for refractive indices of electron waves in cold magnetoactive plasma of arbitrary density 任意密度冷磁动等离子体中电子波折射率的模型表达式

Fundamental Plasma Physics Pub Date : 2024-06-01 Epub Date: 2024-05-06 DOI: 10.1016/j.fpp.2024.100053

D.R. Shklyar , N.S. Artekha

引用次数: 0