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Modern Methods in Collisional-Radiative Modeling of Plasmas

Modern Methods in Collisional-Radiative Modeling of Plasmas
Author: Yuri Ralchenko
Publisher: Springer
Total Pages: 220
Release: 2016-02-25
Genre: Science
ISBN: 3319275143

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This book provides a compact yet comprehensive overview of recent developments in collisional-radiative (CR) modeling of laboratory and astrophysical plasmas. It describes advances across the entire field, from basic considerations of model completeness to validation and verification of CR models to calculation of plasma kinetic characteristics and spectra in diverse plasmas. Various approaches to CR modeling are presented, together with numerous examples of applications. A number of important topics, such as atomic models for CR modeling, atomic data and its availability and quality, radiation transport, non-Maxwellian effects on plasma emission, ionization potential lowering, and verification and validation of CR models, are thoroughly addressed. Strong emphasis is placed on the most recent developments in the field, such as XFEL spectroscopy. Written by leading international research scientists from a number of key laboratories, the book offers a timely summary of the most recent progress in this area. It will be a useful and practical guide for students and experienced researchers working in plasma spectroscopy, spectra simulations, and related fields.


An Introduction to the Atomic and Radiation Physics of Plasmas

An Introduction to the Atomic and Radiation Physics of Plasmas
Author: G. J. Tallents
Publisher: Cambridge University Press
Total Pages: 313
Release: 2018-02-22
Genre: Science
ISBN: 1108419542

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The physics of emission, absorption and interaction of light in astrophysics and in laboratory plasmas is developed from first principles and applied across various fields, from quantum mechanics, electricity and magnetism, to statistical physics. This text links undergraduate level atomic and radiation physics with the advanced material required for postgraduate study and research.


Thermodynamic Diagrams for High Temperature Plasmas of Air, Air-Carbon, Carbon-Hydrogen Mixtures, and Argon

Thermodynamic Diagrams for High Temperature Plasmas of Air, Air-Carbon, Carbon-Hydrogen Mixtures, and Argon
Author: H. Kroepelin
Publisher: Elsevier
Total Pages: 197
Release: 2013-09-24
Genre: Science
ISBN: 1483280276

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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.


A Collisional-Radiative Model and Saha Decrements for a Nonequilibrium Oxygen Plasma

A Collisional-Radiative Model and Saha Decrements for a Nonequilibrium Oxygen Plasma
Author: Ronald D. Taylor
Publisher:
Total Pages: 46
Release: 1986
Genre:
ISBN:

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When air is heated and becomes highly ionized, the primary constituents cnsist of nitrogen, oxygen and their ions. Emissions from this plasma provide diagnostic information as well as contribute to cooling the plasma. To describe such a plasma under nonequilibrium conditions one must known the population densities of various excited states. Using a time dependent approach a collisional-radiative model is developed for an oxygen plasma. Effective recombination and ionization coefficients are calculated for two specific cases, optically thin and optically thick in bound-bound UV radiation. The steady state population densities for neutral and ionic states are presented in terms of their deviations from Saha equilibrium predictions. These results show the approach of the plasma to a state of local thermodynamic equilibrium (LTE) as a function of electron temperatures between 1.0 and 3.0 eV and electron densities between 10 to the 16th power and 10 to the 19th power/cc.


On the Coupling of Collisional Radiative Models and Boltzmann Equation for Atomic Transient Hydrogen Plasmas

On the Coupling of Collisional Radiative Models and Boltzmann Equation for Atomic Transient Hydrogen Plasmas
Author:
Publisher:
Total Pages: 9
Release: 2000
Genre:
ISBN:

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Collisional-radiative model for atomic hydrogen has been coupled self-consistently with the Boltzmann equation for electron kinetics to study the role of nonequilibrium electron distributions on the energy level kinetics. In particular, the role of second kind and electron-electron collisions in affecting both time dependent electron energy distributions and excited state population densities has been investigated.