Author: Yiannis MouzourisPublisher:
ISBN:
Category :
Languages : en
Pages : 284
Book Description
Wave Propagation and Absorption Simulations for Helicon Sources
Full Wave Simulation of Electron Cyclotron and Helicon Plasma Processing Systems
Author: Man-Kam Johannes HsiehPublisher:
ISBN:
Category :
Languages : en
Pages : 596
Book Description
Helicon Wave Propagation in InSb Rectangular Samples
Author: Joseph Stewart BravmanPublisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 140
Book Description
Diagnostics of a Flowing High Power Argon Helicon Plasma with a Magnetic Nozzle
Author: Matthew D. WieboldPhysics and Applications of Hydrogen Negative Ion Sources
Author: Marthe BacalPublisher: Springer Nature
ISBN: 3031214765
Category : Science
Languages : en
Pages : 622
Book Description
This book gives a comprehensive overview of hydrogen negative ion sources and their applications to particle acceleration and nuclear fusion. The book begins with fundamental aspects of negative ion production by volume and surface processes in hydrogen and its isotopes. It covers key topics, such as the need for separation of negative ion production and extraction regions, the need for lowering the work function of the plasma electrode by using caesium vapor or special materials for caesium-free sources, and the ion extractor structure required for hydrogen negative ion sources. Chapters covering various specific ion sources and applications are written by scientists who participated in their development and include sources for accelerators and for neutral beam injection into controlled nuclear fusion reactors.
Radio Wave Propagation and Parabolic Equation Modeling
Author: Gokhan ApaydinPublisher: John Wiley & Sons
ISBN: 1119432111
Category : Science
Languages : en
Pages : 167
Book Description
An important contribution to the literature that introduces powerful new methods for modeling and simulating radio wave propagation A thorough understanding of electromagnetic wave propagation is fundamental to the development of sophisticated communication and detection technologies. The powerful numerical methods described in this book represent a major step forward in our ability to accurately model electromagnetic wave propagation in order to establish and maintain reliable communication links, to detect targets in radar systems, and to maintain robust mobile phone and broadcasting networks. The first new book on guided wave propagation modeling and simulation to appear in nearly two decades, Radio Wave Propagation and Parabolic Equation Modeling addresses the fundamentals of electromagnetic wave propagation generally, with a specific focus on radio wave propagation through various media. The authors explore an array of new applications, and detail various virtual electromagnetic tools for solving several frequent electromagnetic propagation problems. All of the methods described are presented within the context of real-world scenarios typifying the differing effects of various environments on radio-wave propagation. This valuable text: Addresses groundwave and surface wave propagation Explains radar applications in terms of parabolic equation modeling and simulation approaches Introduces several simple and sophisticated MATLAB scripts Teaches applications that work with a wide range of electromagnetic, acoustic and optical wave propagation modeling Presents the material in a quick-reference format ideal for busy researchers and engineers Radio Wave Propagation and Parabolic Equation Modeling is a critical resource forelectrical, electronics, communication, and computer engineers working on industrial and military applications that rely on the directed propagation of radio waves. It is also a useful reference for advanced engineering students and academic researchers.
Laser Ionization and Radiofrequency Sustainment of High-pressure Seeded Plasmas
Author: Kurtis Kelly30th Plasmadynamics and Lasers Conference
Author: Simulation and Design Optimization of Wave Propagation in Heterogeneous Materials
Author: Joel Saa-SeoanePublisher:
ISBN:
Category :
Languages : en
Pages : 179
Book Description
Propagation of waves through heterogeneous structured materials has been the focus of considerable research in recent years. These materials consist of quasi periodic geometries combining two or more piecewise homogeneous component media. The interest in these materials stems from the fact that when waves propagate through them one can observe phenomena, such as bandgaps, which cannot be obtained with any single homogeneous medium. The design of structured materials aims to identify patterns which have desirable features regarding wave propagation applications. The range of applications is very broad. In the context of electromagnetic waves, governed by Maxwell's equations, one may be interested in the design of low-loss waveguides, invisibility cloaks, superlenses or light frequency filters. For acoustic applications one may consider the design of passive noise filters or sound beams. The physics governing the propagation of waves is well understood and the existing mathematical models often provide excellent predictions. For this reason, the design of structured materials can greatly benefit from the use of numerical simulation and optimization techniques. Accurate numerical simulations can describe the propagation of waves through heterogeneous materials once the geometry and material properties are defined. Optimization methods can help determine arrangements of component materials and their properties in order to optimally accomplish a desired outcome. The work presented in this thesis includes a collection of multiscale high order accurate numerical simulation methods capable of simulating wave propagation in piecewise homogeneous media for two types of problems of interest: the source and the eigenvalue problems. In particular, we introduce the multiscale continuous Galerkin and multiscale hybridizable discontinuous Galerkin methods which exploit the inherent structure of the problem by reusing information from repeated subdomains. The efficiency that these approaches provide (reducing degrees of freedom by a factor of 20 to 100) allows for the numerical solution of large acoustic and electromagnetic wave problems, even in 3d, with a greatly reduced need for computational resources. Furthermore, a discrete topological optimization procedure enhanced with reduced basis approximations is developed in order to facilitate the automated design of these materials. The combination of both methods, simulation and optimization, yields enhanced capabilities for the design of optimal patterns for multiple applications. The design of invisibility cloaks and high transmission waveguide bends in 2d and 3d are considered.
Author: