Fundamental Plasma Physics最新文献

{"title":"Corrigendum regarding missing disclaimer statements in previously published articles","authors":"","doi":"10.1016/j.fpp.2024.100075","DOIUrl":"10.1016/j.fpp.2024.100075","url":null,"abstract":"","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100075"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748303","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}

{"title":"Frontiers of plasma physics and technology 2023","authors":"Tara Desai","doi":"10.1016/j.fpp.2024.100073","DOIUrl":"10.1016/j.fpp.2024.100073","url":null,"abstract":"","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100073"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748302","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}

{"title":"Physicochemical properties and antimicrobial efficacy of argon cold atmospheric pressure plasma jet activated liquids – a comparative study","authors":"Sarthak Das ,&nbsp;Sarita Mohapatra ,&nbsp;Satyananda Kar","doi":"10.1016/j.fpp.2024.100078","DOIUrl":"10.1016/j.fpp.2024.100078","url":null,"abstract":"<div><div>Cold atmospheric pressure plasma jet activated liquids (CAPJALs) have attracted considerable scientific attention due to their peculiar antimicrobial characteristics. In the current context, there is a need to compare the bactericidal activity of CAPJALs and demonstrate the specific parameters necessary to obtain greater effectiveness. This in-vitro research examines the antimicrobial activity of liquids, such as deionized water (DI-W), drinking water (DW), tap water (TW), and normal saline (NS) activated by Ar cold atmospheric pressure plasma jet (CAPJ) against multidrug-resistant (MDR) <em>E. coli</em> and <em>S. aureus</em>. The computed <em>D-</em> value showed that CAPJALs' bacterial inactivation efficacy followed the trend – DI-W ≈ NS &gt; DW &gt; TW for both the isolates. To obtain greater bactericidal effectiveness, an optimum combination of liquid activation time by CAPJ and CAPJAL – bacteria interaction time was noticed. In addition, the rate at which the physicochemical parameters (pH, electrical conductivity (EC), total dissolved solids (TDS), and concentration of reactive species (H₂O₂, NO₃^-, and NO₂^-)) changed within the liquid varied in different ways. It was observed that the identified gas-phase species (Ar I, Ar⁺, N₂, N₂⁺, O I, OH•, OH⁺, NO⁺, O₂⁺, N₂O₃^-, NO₃^-, N₂O₂^-, etc.) would contribute to modification of liquid physicochemical property by generating liquid phase reactive species (NO₃^-, NO₂^-, H⁺, H₂O₂, ONOOH, Cl₂, HOCl, etc.) via reaction cascades. These reactive species in the liquid phase, together with other physicochemical characteristics, were found to play a part in the process of bacterial inactivation. This study into the underlying mechanism of CAPJ – liquid and CAPJAL – bacteria interaction would help to determine its potential use as a disinfectant in healthcare settings.</div></div><div><h3>List of microorganisms</h3><div><em>E. coli: Escherichia coli; S. aureus: Staphylococcus aureus</em>.</div></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100078"},"PeriodicalIF":0.0,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656725","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}

{"title":"Early applications of Neural Networks to plasma science: Architectures, solutions, and impact.","authors":"Savino Longo","doi":"10.1016/j.fpp.2024.100077","DOIUrl":"10.1016/j.fpp.2024.100077","url":null,"abstract":"<div><div>Many applications of Neural Networks (NN) to plasma science have appeared in the last years. The author describes here some of the early applications of NNs to plasma science at the beginning of the 90 s, when multi-layer, feed-forward-back-propagation (FFBP) architectures found several applications in this field: they were used to solve inversion problems, to create complete sets of input data, to replace time-consuming modules in models and to predict the outcome of real processes. From a partially personal perspective the author reviews the details of plasma problems to which NNs were successfully applied, and those of the related architectures. It turns out that some solutions, which are perceived today as marking the difference between the previous and contemporary NNs application practices, were in common use &gt;30 years ago when they were deemed fruitful. This can help create deeper historical insight into a field that is getting much attention today.</div></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100077"},"PeriodicalIF":0.0,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534932","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}

{"title":"Ionospheric plasma irregularities over Dronning Maud Land in Antarctica and associated space weather effects","authors":"Wojciech J. Miloch,&nbsp;Daria S. Kotova,&nbsp;Yaqi Jin","doi":"10.1016/j.fpp.2024.100076","DOIUrl":"10.1016/j.fpp.2024.100076","url":null,"abstract":"<div><div>Ionospheric plasma irregularities and associated space weather effects over Dronning Maud Land in Antarctica are studied with a multi-instrument approach. It is demonstrated during a substorm event that auroral particle precipitation associated with the edges of auroral arcs can lead to irregularities in the ionospheric plasma density that can have significant impact on trans-ionospheric radio waves. Both refractive and diffractive effects are observed on signals from the GNSS satellites, where the latter are identified by the ionospheric free linear combination approach and amplitude scintillation. Thus, intense auroral particle precipitation can lead to plasma irregularities at scales from several kilometers down to and below the Fresnel radius, and they can result in space weather effects which can lead to losing the integrity of the GNSS signals.</div></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100076"},"PeriodicalIF":0.0,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586616","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}

{"title":"Spectral line broadening of the Raman scattered waves in laser plasmas","authors":"Martin Mašek","doi":"10.1016/j.fpp.2024.100074","DOIUrl":"10.1016/j.fpp.2024.100074","url":null,"abstract":"<div><div>Parametric instabilities are of a great concern especially in the context of laser fusion. Electromagnetic waves scattered by these instabilities can reach high amplitudes, thereby diverting a significant portion of the energy from the incident laser beam, which is essential for compressing and heating the fuel capsule. In addition, the emerging electrostatic wave can trap and accelerate electrons, which, upon impact, can preheat the target and thus prevent its effective compression. Here, we focus on the stimulated Raman scattering and the associated processes. Spectral broadening of the backward Raman scattering daughter wave is theoretically described process, which is caused by so-called trapped particle instability. The existence of trapped and freely moving electrons in plasma influenced by high amplitude electron plasma wave leads also to the anomalous dispersion of this wave. It is reflected in the shifts in the electrostatic spectrum which, on the other hand, must be visible also in the electromagnetic spectrum via the feed-back loop of the instability. In the present paper, we discuss scattered wave modes spectral broadening using results of numerical simulations.</div></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100074"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428158","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}

{"title":"Chaos, periodicity, and multistability in a plasma oscillator forced by a non-sinusoidal wave function","authors":"Julio C. Sagás,&nbsp;Abel A.C. Recco,&nbsp;Paulo C. Rech","doi":"10.1016/j.fpp.2024.100072","DOIUrl":"10.1016/j.fpp.2024.100072","url":null,"abstract":"<div><p>In this paper we report on the dynamics of a plasma oscillator forced by a non-sinusoidal wave function, which is modeled by a six-parameter nonhomogeneous second-order ordinary differential equation. We keep four of these parameters constant, and investigate the dynamics of this system by varying other two parameters, namely <span><math><mi>A</mi></math></span> and <span><math><mi>ω</mi></math></span>, which are related to the amplitude and the angular frequency of the components of a Fourier series consisting of an expansion of cosine functions, that represents the external forcing. We investigate points in the two-dimensional <span><math><mrow><mo>(</mo><mi>ω</mi><mo>,</mo><mi>A</mi><mo>)</mo></mrow></math></span> parameter-space of the forced plasma oscillator, with the dynamical behavior of each these points being characterized as regular or chaotic, depending on the magnitude of the largest Lyapunov exponent. Then we show that this parameter-space reveals regions of occurrence of the multistability phenomenon in the system. Properly generated bifurcation diagrams confirm this finding. Basins of attraction of coexisting periodic and chaotic attractors in the phase-space are presented, as well as the coexisting attractors themselves.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100072"},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772828524000372/pdfft?md5=cd4b4062654f1b4f08fc7c9c4f1f98b4&pid=1-s2.0-S2772828524000372-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164741","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}

{"title":"Ultra-high charge electron acceleration for nuclear applications","authors":"Liming Chen,&nbsp;Jie Feng,&nbsp;Wenchao Yan,&nbsp;Hao Xu,&nbsp;Yaojun Li,&nbsp;Wenzhao Wang,&nbsp;Xulei Ge,&nbsp;Xiaojun Huang,&nbsp;Jie Zhang","doi":"10.1016/j.fpp.2024.100071","DOIUrl":"10.1016/j.fpp.2024.100071","url":null,"abstract":"<div><p>Ultra-intense laser-plasma wakefield accelerator possess several superior properties compared with the traditional radio-frequency accelerators. These characteristics include femtosecond duration, micro-source size, and ultra-dense beam density, result in highly advantageous for various important applications. In this paper, we reviewed the generation of ultra-intense and high charge electron beam based on laser-plasma acceleration and its nuclear applications in Shanghai Jiao Tong University, including the production of 10 s nC charge beams, the generation of ultra-high flux neutron source on the order of 10¹⁹ n/cm²/s, and the excitation of nuclear isomers with the peak efficiency on the order of 10¹⁵ particle/s. This laser driving ultra-dense electron source, in conjunction with the plasma environment, presents immense potential in addressing critical problems in astrophysics, and facilitating various nuclear applications. Based on above progress in nuclear astrophysics, a new research plateform about laboratory astrophysics with a 2.5 PW laser will be constructed in TDLI institute.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100071"},"PeriodicalIF":0.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772828524000360/pdfft?md5=75a1f636a948ff5dc70d610cb35f51c5&pid=1-s2.0-S2772828524000360-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164740","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}

{"title":"Surface modification of fibres using bipolar pulsed driven DBD plasma based KrCl* and XeI* exciplex sources","authors":"Kiran Ahlawat,&nbsp;Vigyan Gadodia,&nbsp;Pooja Yadav,&nbsp;Ramavtar Jangra,&nbsp;Ram Prakash","doi":"10.1016/j.fpp.2024.100068","DOIUrl":"10.1016/j.fpp.2024.100068","url":null,"abstract":"<div><p>This work demonstrates the application of DBD plasma-based exciplex UV technology for surface modification of natural fibres. KrCl* (222 nm) and XeI* (253 nm) exciplex lamps have been developed and characterized in terms of the applied voltage, applied frequency, gas pressure, and absolute UV light intensity. The measured radiated intensities are 2.45 mW/cm² and 1.91 mW/cm² for 222 nm and 253 nm exciplex lamps, respectively. The change in physicochemical properties such as tensile strength, weight loss, wettability, surface morphology, and chemical composition, are evaluated using different characterization techniques ̶ like Contact Angle Goniometry, Thermogravimetric Analysis (TGA), Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR), Field Emission Scanning Electron Microscopy (FE-SEM), and Energy Dispersive X-ray (EDX) analysis, etc. The results are compared with untreated fibres to see the effect of different doses of UV₂₂₂ and UV₂₅₃ on the different properties of fibres. It is inferred that the exciplex UV₂₂₂ treated fibres have a higher concentration of different polar groups (− OH, − COOH, etc.). Much improvement in the dyebath ability of the natural fibre is achieved using a 222 nm exciplex light source, which reduces the dye concentration in the textile effluents and improves the dye adhesion to the fibre. It has been found that the fibre's hydrophilicity and dye bath capabilities have improved significantly.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"12 ","pages":"Article 100068"},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772828524000335/pdfft?md5=ceb8d004ad2b6af15e9c07cef1190582&pid=1-s2.0-S2772828524000335-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142088567","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}

{"title":"Comprehensive study of Kinetic Trajectory Simulation method for multi-component magnetized plasma-wall interaction process","authors":"Suresh Basnet ,&nbsp;Roshan Chalise ,&nbsp;Num Prasad Acharya ,&nbsp;Raju Khanal","doi":"10.1016/j.fpp.2024.100067","DOIUrl":"10.1016/j.fpp.2024.100067","url":null,"abstract":"<div><p>For a wide range of plasma applications across diverse fields, a comprehensive understanding of the plasma-wall interaction mechanism is indispensable due to its inherent connection with confined plasma. This work compilation delves into the Kinetic Trajectory Simulation (KTS) method for the interaction of multi-component magnetized plasma with wall, specifically focusing on its implications for the tungsten wall sputtering model. In the evolution of the 1d3v (one dimensional spatial coordinates and three dimensional velocity coordinates) KTS method, the coupled set of kinetic equations has been solved under specified boundary conditions which yields results of higher accuracy. At the particle injection boundary, we have assumed the velocity distribution function of particle species to be cut-off Maxwellians, meeting essential requirements for plasma-wall transition processes: quasineutrality, sheath edge singularity, continuity of macroscopic fluid variables, and the kinetic Bohm sheath condition. The kinetic Bohm sheath condition, a fundamental criterion for plasma sheath formation, is extended for multi-component plasmas, accounting for the cut-off Maxwellian distribution of negatively charged particles. A comparative study of the kinetic Bohm sheath condition for cut-off and Boltzmann distributions reveals a deviation of less than 2.0% in magnitude. The concentration ratio of positive or negative ion species and the presheath side electron temperature influence various plasma-wall transition characteristics, including wall potential, Debye sheath thickness, particle densities, potential distribution, particle fluxes towards the surface, particle drift velocity, phase-space trajectory evolution, and physical sputtering of the tungsten surface. Although lighter ions possess higher energy when striking the surface, the physical sputtering yield of the tungsten surface is greater for heavier ions due to their lower threshold energy and larger collision cross-section. Furthermore, a comparative study of plasma-wall transition properties using kinetic and fluid approaches demonstrates qualitative similarities, with a notable deviation of approximately 4.0% in the magnitude in the vicinity of the material surface.</p></div>","PeriodicalId":100558,"journal":{"name":"Fundamental Plasma Physics","volume":"11 ","pages":"Article 100067"},"PeriodicalIF":0.0,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772828524000323/pdfft?md5=f4d1e366f9ae9c5c2d28bdc33e86d321&pid=1-s2.0-S2772828524000323-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963478","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}