Download or read book Elementary Processes in Hydrogen Helium Plasmas written by Ratko K. Janev and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic and molecular processes play an important role in laboratory and astrophysical plasmas for a wide range of conditions, and determine, in part, their electrical, transport, thermal, and radiation properties. The study of these and other plasma properties requires a knowledge of the cross sections, reaction rate coefficients, and inelastic energy transfers for a variety of collisional reactions. In this review, we provide quantitative information about the most important collision processes occurring in hy drogen, helium, and hydrogen-helium plasmas in the temperature range from 0. 1 eV to 20 keY. The material presented here is based on published atomic and molecular collision data, theoretical calculations, and appro priate extrapolation and interpolation procedures. This review gives the properties of each reaction, graphs of the cross sections and reaction rate coeffiCients, and the coefficients of analytical fits for these quantities. We present this information in a form that will enable researchers who are not experts in atomic physics to use the data easily. The authors thank their colleagues at the Princeton Plasma Physics Laboratory and in the atomic physics community who have made many useful suggestions for the selection and presentation o. f t. he material. We gratefully acknowledge the excellent technical assistance of Elizabeth Carey for the typing, and Bernie Giehl for the drafting. This work was supported in part by the U. S. Department of Energy Contract No. DE-AC02-76-CHO-3073. Princeton, USA R. K. Janev W. D. Langer September, 1987 K. Evans, Jr. , D. E.

Download or read book Hydrogen Recycling at Plasma Facing Materials written by C.H. Wu and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most important issues in the construction of future magnetic confinement fusion machines is that of the materials of which they are constructed, and one of the key points of proper material choice is the recycle of hydrogen isotopes with materials at the plasma face. Tritium machines demand high safety and economy, which in turn requires the lowest possible T inventory and smallest possible permeation through the plasma facing materials. The recycle behaviour of the in-vessel components must also be known if the plasma reaction is to predictable and controllable, and finally, the fuel cycle and plasma operating regimes may be actively controlled by special materials and methods. The book discusses both laboratory experiments exploring the basic properties of non-equilibrium hydrogen-solid systems (diffusion, absorption, boundary processes) and experimental results obtained from existing fusion machines under conditions simulating future situations to some extent. Contributions are from experts in the fields of nuclear fusion, materials science, surface science, vacuum science and technology, and solid state physics.

Download or read book Hydrogen Generation from Ethanol using Plasma Reforming Technology written by JianHua Yan and published by Springer. This book was released on 2017-03-14 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of hydrogen production from renewable resources such as ethanol using plasma or plasma-catalytic technologies. Further, it presents a balanced and comprehensive treatment of the core principles, novel plasma reactors and diagnostics, as well as state-of-the-art plasma energy applications. It brings together technological advances and research on plasma generators and their application in hydrogen production, including plasma-assisted alcohol reforming technology, plasma-catalytic alcohol reforming technology, the alcohol reforming mechanism, models of alcohol reforming for hydrogen production, the energy balance of hydrogen production from ethanol, and a comparison of alcohol reforming assisted by different plasma treatment systems. As such, it offers a valuable reference guide for scientists, engineers and graduate students in the fields of energy and environment, plasma physics and chemistry.

Download or read book Reaction of Coal in Argon and Argon hydrogen Plasmas written by Walter Kawa and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elementary Processes in Hydrogen helium Plasmas written by Ratko K. Janev and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elementary Processes in Hydrogen Helium Plasmas written by Ratko K Janev and published by . This book was released on 1987-10-23 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electromagnetic Radiation from an Ionized Hydrogen Plasma written by S. R. Berman and published by . This book was released on 1959 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermodynamic Diagrams for High Temperature Plasmas of Air Air Carbon Carbon Hydrogen Mixtures and Argon written by H. Kroepelin and published by Elsevier. This book was released on 2013-09-24 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermodynamic Diagrams for High Temperature Plasmas of Air, Air-Carbon, Carbon-Hydrogen Mixtures, and Argon provides information relating to the properties of equilibrium gas plasmas formed from hydrocarbons, from air without argon, from pure argon, and from mixtures of air and carbon at various compositions, temperatures and pressures. The data are presented in graphical rather than tabular form to provide a clearer picture of the plasma processes investigated. This book is composed of four chapters, and begins with the introduction to the characteristics of plasmas, with emphasis on their thermodynamic properties. The succeeding chapter deals with the theoretical basis of the computations of thermodynamic properties using a system of equations derived from quantized Boltzmann statistics. These topics are followed by discussions on the calculation of equilibrium compositions and the thermodynamic values for thermal plasmas. The final chapter describes proposed models on which the calculations are based. This book will prove useful to chemical technologists and researchers.

Download or read book Introduction to Plasma Physics and Controlled Fusion written by Francis Chen and published by Springer. This book was released on 2015-12-17 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This complete introduction to plasma physics and controlled fusion by one of the pioneering scientists in this expanding field offers both a simple and intuitive discussion of the basic concepts of this subject and an insight into the challenging problems of current research. In a wholly lucid manner the work covers single-particle motions, fluid equations for plasmas, wave motions, diffusion and resistivity, Landau damping, plasma instabilities and nonlinear problems. For students, this outstanding text offers a painless introduction to this important field; for teachers, a large collection of problems; and for researchers, a concise review of the fundamentals as well as original treatments of a number of topics never before explained so clearly. This revised edition contains new material on kinetic effects, including Bernstein waves and the plasma dispersion function, and on nonlinear wave equations and solitons. For the third edition, updates was made throughout each existing chapter, and two new chapters were added; Ch 9 on “Special Plasmas” and Ch 10 on Plasma Applications (including Atmospheric Plasmas).

Download or read book Hydrogen and Helium Recycling at Plasma Facing Materials written by Ahmed Hassanein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compendium representing the current state of the art in the modelling, simulation and physics of the interaction of hydrogen and helium with plasma facing materials in fusion reactors. This is the topic that will determine the success of the production of energy by future Tokamak reactors and it is here discussed by the world's experts. Topics covered are recycling of hydrogen isotopes; wall fuelling and wall pumping; active control of hydrogen recycling; hydrogen and helium behaviour in solids and liquid metals; and databases for recycling.

Download or read book Stark Broadening of Hydrogen and Hydrogenlike Spectral Lines in Plasmas written by Evgeniĭ Aleksandrovich Oks and published by Alpha Science International, Limited. This book was released on 2006 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Stark broadening of spectral lines in plasmas belongs to the highest level of plasma spectroscopy and is consequently its most complicated subject. This book presents analytical advances into this problem, thus yielding a physical insight.

Download or read book Frequency Ranges for Existence of Waves in a Cold Collisionless Hydrogen Plasma written by Richard R. Woollett and published by . This book was released on 1964 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interim Absorption Coefficients and Opacities for Hydrogen Plasma at High Pressure written by R. W. Patch and published by . This book was released on 1969 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of Magnetic Thermonuclear Reactor Design written by Vasilij A. Glukhikh and published by Woodhead Publishing. This book was released on 2018-05-21 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Magnetic Thermonuclear Reactor Design is a comprehensive resource on fusion technology and energy systems written by renowned scientists and engineers from the Russian nuclear industry. It brings together a wealth of invaluable experience and knowledge on controlled thermonuclear fusion (CTF) facilities with magnetic plasma confinement – from the first semi-commercial tokamak T-3, to the multi-billion international experimental thermonuclear reactor ITER, now in construction in France. As the INTOR and ITER projects have made an immense contribution in the past few decades, this book focuses on its practical engineering aspects and the basics of technical physics and electrical engineering. Users will gain an understanding of the key ratios between plasma and technical parameters, design streamlining algorithms and engineering solutions. Written by a team of qualified experts who have been involved in the design of thermonuclear reactors for over 50 years Outlines the most important features of the ITER project in France which is building the largest tokamak, including the design, material selection, safety and economic considerations Includes data on how to design magnetic fusion reactors using CAD tools, along with relevant regulatory documents

Download or read book Characterization of Hydrogen Plasma for Polycrystalline Silicon Passivation in a Large Area Inductively coupled Plasma Reactor written by Robert S. Bassett and published by . This book was released on 1998 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogen Plasmas and Their Interaction with Fusion relevant Materials written by Cameron McInnes Samuell and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical modelling and experimental measurements are used to investigate hydrogen plasmas in the MAGPIE reactor, a low pressure radio frequency helicon device designed for plasma-material interaction experiments. The interaction between these plasmas and fusion-relevant surface materials are explored. A global model was developed and is implemented to describe the behaviour of electrons, ground-state atomic and molecular hydrogen, three positive ion species, a single negative ion species, and fourteen vibrationally excited states of molecular hydrogen in a low pressure discharge. The interactions between these species are defined through 33 processes, comprising 352 individual reactions. The model's operation is validated using experimental measurements of the electron density, electron temperature, and atomic hydrogen density. Subsequently, the model is applied to the MAGPIE reactor where it is employed to predict neutral and charged species densities as well as the electron temperature as a function of power, pressure, atomic loss coefficient, quenching coefficient, gas temperature, gas flow rate, and radial diffusion strength. The plasma chemistry contributing to each particle species' densities is evaluated and the dominant generation and loss mechanisms ascertained. Model simulations show that the atomic loss coefficient is observed to drive significant changes in plasma chemistry without changes in electron density or electron temperature. For a 1000 W, 10 mTorr MAGPIE plasma, it is demonstrated that at low loss coefficient values, neutral hydrogen atom density exceeds the molecular density and H+ becomes the dominant ion. For loss coefficient values approaching one, the dissociative fraction approaches zero and H3+ becomes dominant. The simulations demonstrate the large degree to which the choice of reactor wall material can impact plasma conditions. Experimental measurements of loss coefficient for stainless steel, copper, nickel, tungsten, and graphite samples are made using pulsed induced fluorescence (PIF) in MAGPIE. The loss coefficient is shown to be enhanced by plasma exposure. It is suggested that ion bombardment causes the production of additional adsorption and absorption sites on the material surface. These measurements are made for a range of powers between 100 and 800 W and at pressures between 5 and 100 mTorr. The loss coefficient is observed to change as a function of pressure, power, and sample material type. To further investigate the behaviour of neutral species, Doppler broadening of the Balmer-alpha emission line and optical emission spectroscopy of ro-vibrationally excited H2 is used to measure the atomic and molecular gas temperatures in the MAGPIE reactor. In low power operation (

Download or read book Steady state Composition of a Low density Nonequilibrium Hydrogen Plasma written by Roman Krawec and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: