发布求助
文献互助 智能选刊 最新文献

Plasma Science and Technology [Working Title]最新文献

筛选
英文 中文
Free-electron Driven Terahertz Wave Sources Based on Simth-Purcell Effect 基于smith - purcell效应的自由电子驱动太赫兹波源
Plasma Science and Technology [Working Title] Pub Date : 2021-11-03 DOI: 10.5772/intechopen.100010
Weihao Liu, Zijia Yu, Z. Tao
{"title":"Free-electron Driven Terahertz Wave Sources Based on Simth-Purcell Effect","authors":"Weihao Liu, Zijia Yu, Z. Tao","doi":"10.5772/intechopen.100010","DOIUrl":"https://doi.org/10.5772/intechopen.100010","url":null,"abstract":"Terahertz electromagnetic wave is one of the hottest research topics in nowadays scientific world thanks to its broad applications in material characterization, medical imaging, wireless communication, and security checking etc. Using free-electron beams to interact with periodic structures via the famous Smith-Purcell effect is an efficient way of generating high-power terahertz radiation. In this chapter, we introduce the basic theory and latest developments of the terahertz radiation schemes using a free-electron beam (including continuous electron beam, a single electron bunch, and a train of electron bunches, etc.) to interact with periodic electromagnetic structures, including grating, surface plasmonics, and subwavelength hole arrays, via a special Smith-Purcell effect or Cherenkov-like effect. A kind of free-electron lasers based on the special Smith-Purcell radiation in the terahertz region is proposed and investigated, which can be developed as high-power terahertz wave sources for practical applications.","PeriodicalId":341815,"journal":{"name":"Plasma Science and Technology [Working Title]","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129816274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Polarized Thermal Conductivity of Two-Dimensional Dusty Plasmas 二维尘埃等离子体的极化热导率
Plasma Science and Technology [Working Title] Pub Date : 2021-10-30 DOI: 10.5772/intechopen.100545
A. Shahzad, Madiha Naheed, A. Mahboob, M. Kashif, Alina Manzoor, H. Maogang
{"title":"Polarized Thermal Conductivity of Two-Dimensional Dusty Plasmas","authors":"A. Shahzad, Madiha Naheed, A. Mahboob, M. Kashif, Alina Manzoor, H. Maogang","doi":"10.5772/intechopen.100545","DOIUrl":"https://doi.org/10.5772/intechopen.100545","url":null,"abstract":"The computation of thermalt properties of dusty plasmas is substantial task in the area of science and technology. The thermal conductivity (λ) has been computed by applying polarization effect through molecular dynamics (MD) simulations of two dimensional (2D) strongly coupled complex dusty plasmas (SCCDPs). The effects of polarization on thermal conductivity have been measured for a wide range of Coulomb coupling (Γ) and Debye screening (κ) parameters using homogeneous non-equilibrium molecular dynamics (HNEMD) method for suitable system sizes. The HNEMD simulation method is employed at constant external force field strength (F*) and varying polarization effects. The algorithm provides precise results with rapid convergence and minute dimension effects. The outcomes have been compared with earlier available simulation results of molecular dynamics, theoretical predictions and experimental results of complex dusty plasma liquids. The calculations show that the kinetic energy of SCCDPS depends upon the system temperature (≡ 1/Г) and it is independent of higher screening parameter. Furthermore, it has shown that the presented HNEMD method has more reliable results than those obtained through earlier known numerical methods.","PeriodicalId":341815,"journal":{"name":"Plasma Science and Technology [Working Title]","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127742139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Cold Atmospheric Pressure Plasma Technology for Biomedical Application 低温大气压等离子体生物医学应用技术
Plasma Science and Technology [Working Title] Pub Date : 2021-10-29 DOI: 10.5772/intechopen.98895
Rakesh Ruchel Khanikar, H. Bailung
{"title":"Cold Atmospheric Pressure Plasma Technology for Biomedical Application","authors":"Rakesh Ruchel Khanikar, H. Bailung","doi":"10.5772/intechopen.98895","DOIUrl":"https://doi.org/10.5772/intechopen.98895","url":null,"abstract":"Cold plasma generated in an open environment with a temperature nearly around room temperature has recently been a topic of great importance. It has unlocked the door of plasma application in a new direction: biomedical applications. Cold atmospheric pressure (CAP) plasma comprises various neutral and charged reactive species, UV radiations, electric current/fields etc., which have several impactful effects on biological matter. Some of the significant biological effects of CAP plasma are inactivation of microorganism, stimulation of cell proliferation and tissue regeneration, destruction of cells by initializing apoptosis etc. Although the detailed mechanism of action of plasma on biomaterials is still not completely understood, some basic principles are known. Studies have indicated that the reactive oxygen species and nitrogen species (ROS, RNS) play a crucial role in the observed biological effects. In this perspective, this chapter first provides a brief discussion on the fundamentals of CAP plasma and its generation methods. Then a discussion on the optical diagnostics methods to characterize the plasma is provided. Optical emission spectroscopy (OES) is used to identify the reactive species and to measure their relative concentration. Other important plasma parameters such as gas temperature, electron/excitation temperature and electron density measurement methods using OES have also been discussed. Then a discussion on the application of CAP plasma in biomedical field is provided. A thorough understanding of biochemical reaction mechanisms involving highly reactive plasma species will further improve and extend CAP plasma technology in biomedical applications.","PeriodicalId":341815,"journal":{"name":"Plasma Science and Technology [Working Title]","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116252467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Gyrotron: The most Suitable Millimeter-Wave Source for Heating of Plasma in Tokamak 回旋管:最适合托卡马克等离子体加热的毫米波源
Plasma Science and Technology [Working Title] Pub Date : 2021-09-15 DOI: 10.5772/intechopen.98857
S. Karmakar, Jagadish C. Mudiganti
{"title":"Gyrotron: The most Suitable Millimeter-Wave Source for Heating of Plasma in Tokamak","authors":"S. Karmakar, Jagadish C. Mudiganti","doi":"10.5772/intechopen.98857","DOIUrl":"https://doi.org/10.5772/intechopen.98857","url":null,"abstract":"In this chapter, brief outline is presented about gyro-devices. Gyro-devices comprise of a family of microwave devices and gyrotron is one among those. Various gyro devices, namely, gyrotron, gyro-klystron and gyro traveling-wave tubes (gyro-TWT) are discussed. Gyrotron is the only microwave source which can generate megawatt range of power at millimeter-wave and sub-millimeter-wave frequency. Gyrotron is the most suitable millimeter wave source for the heating of plasma in the Tokamak for the controlled thermoneuclear fusion reactors. This device is used both for the electron cyclotron resonance heating (ECRH) as well as for the electron cyclotron current drive (ECCD). In this chapter, the basic theory of gyrotron operation are presented with the explanation of various sub-systems of gyrotron. The applications of gyrotrons are also discussed. Also, the present state-of-the-art worldwide scenario of gyrotrons suitable for plasma heating applications are presented in details.","PeriodicalId":341815,"journal":{"name":"Plasma Science and Technology [Working Title]","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126508790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical Investigations of Electromagnetic Oscillations and Turbulences in Hall Thrusters Using Two Fluid Approach 基于双流体方法的霍尔推力器电磁振荡和湍流数值研究
Plasma Science and Technology [Working Title] Pub Date : 2021-09-12 DOI: 10.5772/intechopen.99883
Sukhmander Singh, Bhavna Vidhani, Ashish Tyagi
{"title":"Numerical Investigations of Electromagnetic Oscillations and Turbulences in Hall Thrusters Using Two Fluid Approach","authors":"Sukhmander Singh, Bhavna Vidhani, Ashish Tyagi","doi":"10.5772/intechopen.99883","DOIUrl":"https://doi.org/10.5772/intechopen.99883","url":null,"abstract":"The first part of the contributed chapter discuss the overview of electric propulsion technology and its requirement in different space missions. The technical terms specific impulse and thrust are explained with their relation to exhaust velocity. The shortcoming of the Hall thrusters and its erosion problems of the channel walls are also conveyed. The second part of the chapter discuss the various waves and electromagnetic instabilities propagating in a Hall thruster magnetized plasma. The dispersion relation for the azimuthal growing waves is derived analytically with the help of magnetohydrodynamics theory. It is depicted that the growth rate of the instability increases with magnetic field, electron drift velocity and collisional frequency, whereas it is decreases with the initial drift of the ions.","PeriodicalId":341815,"journal":{"name":"Plasma Science and Technology [Working Title]","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115243502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transverse Thermal Instability of Radiative Plasma with FLR Corrections for Star Formation in ISM 辐射等离子体的横向热不稳定性与FLR修正在ISM中的恒星形成
Plasma Science and Technology [Working Title] Pub Date : 2021-09-05 DOI: 10.5772/intechopen.99924
S. Kaothekar
{"title":"Transverse Thermal Instability of Radiative Plasma with FLR Corrections for Star Formation in ISM","authors":"S. Kaothekar","doi":"10.5772/intechopen.99924","DOIUrl":"https://doi.org/10.5772/intechopen.99924","url":null,"abstract":"Impact of porosity, rotation and finite ion Larmor radius (FLR) corrections on thermal instability of immeasurable homogeneous plasma has been discovered incorporating the effects of radiative heat-loss function and thermal conductivity. The general dispersion relation is carried out with the help of the normal mode analysis scheme taking the suitable linearized perturbation equations of the difficulty. This general dispersion relations is further reduces for rotation axis parallel and perpendicular to the magnetic field. Thermal instability criterion establishes the stability of the medium. Mathematical calculations have been performed to represent the impact of different limitations on the growth rate of thermal instability. It is found that rotation, FLR corrections and medium porosity stabilize the growth rate of the medium in the transverse mode of propagation. Our outcome of the problem explains that the rotation, porosity and FLR corrections affect the dens molecular clouds arrangement and star configuration in interstellar medium.","PeriodicalId":341815,"journal":{"name":"Plasma Science and Technology [Working Title]","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127101450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Emerging Field Trends Erosion-Free Electric Hall Thrusters Systems 新兴领域的发展趋势无腐蚀电霍尔推进器系统
Plasma Science and Technology [Working Title] Pub Date : 2021-08-16 DOI: 10.5772/intechopen.99096
I. Litovko, A. Goncharov, A. Dobrovolskyi, I. Naiko
{"title":"The Emerging Field Trends Erosion-Free Electric Hall Thrusters Systems","authors":"I. Litovko, A. Goncharov, A. Dobrovolskyi, I. Naiko","doi":"10.5772/intechopen.99096","DOIUrl":"https://doi.org/10.5772/intechopen.99096","url":null,"abstract":"The Hall-type accelerator with closed Hall current and open (that is unbounded by metal or dielectric) walls was proposed and considered both theoretically and experimentally. The novelty of this accelerator is the use of a virtual parallel surface of the anode and the cathode due to the principle of equipotentialization of magnetic field lines, which allows to avoid sputtering of the cathode surface and preserve the dynamics of accelerated ions. The formation of the actual traction beam should be due to the acceleration of ions with the accumulated positive bulk charge. A two-dimensional hybrid model in cylindrical coordinates is created in the framework of which the possibility of creation a positive space charge at the system axes is shown. It is shown that the ions flow from the hump of electrical potential can lead to the creation of a powerful ion flow, which moves along the symmetry axis in both sides from the center.","PeriodicalId":341815,"journal":{"name":"Plasma Science and Technology [Working Title]","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125333916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-Liquid Plasma: A Novel Tool for Nanofabrication 液体等离子体:纳米制造的新工具
Plasma Science and Technology [Working Title] Pub Date : 2021-08-12 DOI: 10.5772/intechopen.98858
P. J. Boruah, P. Kalita, H. Bailung
{"title":"In-Liquid Plasma: A Novel Tool for Nanofabrication","authors":"P. J. Boruah, P. Kalita, H. Bailung","doi":"10.5772/intechopen.98858","DOIUrl":"https://doi.org/10.5772/intechopen.98858","url":null,"abstract":"This chapter focuses on synthesising nanomaterials using an emerging technology called In-Liquid Plasma, i.e., plasma generation inside a liquid. The generation of various reactive species and energetic electrons in the plasma zone plays a crucial role in synthesising nanomaterials. They act as the reducing agent. Non-requirement of the toxic chemical reducing agents make In-Liquid Plasma an environmentally friendly green approach to fabricate nanomaterials. This method enables the simultaneous synthesis of nanoparticles from the electrode material and liquid precursor, which gains much importance on the single-step synthesis of nanocomposites. Moreover, it gives flexibility in controlling both the physical and chemical parameters, which provide fine-tuning required for the size, shape and composition of nanomaterials.","PeriodicalId":341815,"journal":{"name":"Plasma Science and Technology [Working Title]","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127592937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信