Cherrington / Ter Haar Gaseous Electronics and Gas Lasers

1. Auflage 2014
ISBN: 978-1-4832-7896-4
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 282 Seiten, Web PDF

Gaseous Electronics and Gas Lasers deals with the fundamental principles and methods of analysis of weakly ionized gas discharges and gas lasers. The emphasis is on processes occurring in gas discharges and the analytical methods used to calculate important process rates. Detailed analyses of a variety of gas discharges are presented using atomic, ionic, and gas lasers as primary illustrations. Comprised of 12 chapters, this book begins with some initial categorization of gas discharge species and an overview of their interactions. The discussion then turns to an elementary theory of a gas discharge; inelastic collisions; distribution functions and the Boltzmann equation; and transport coefficients. Subsequent chapters focus on the fluid equations; electron-density decay processes; excited species; atomic neutral gas lasers; molecular gas lasers; and ion lasers. The important electron loss processes that determine the behavior of a plasma when the source and loss terms balance are also examined. This monograph will be of value to graduate students, practitioners, and researchers in the fields of physics and engineering, as well as to professionals interested in working with weakly ionized discharges.

Autoren/Hrsg.

Cherrington, Blake E.

Ter Haar, D.

Inhaltsverzeichnis

1;Front Cover;1
2;Gaseous Electronics and Gas Lasers;4
3;Copyright Page;5
4;Table of Contents;8
5;Dedication;6
6;PREFACE;14
7;ACKNOWLEDGEMENTS;16
8;Chapter 1. Introduction;18
8.1;1.1 Gas discharge Species;18
8.2;1.2 Interactions between Species;19
8.3;1.3 Basic Characterization of Electrons;21
8.4;1.4 References;27
9;Chapter 2. Elementary Theory of a Gas Discharge;28
9.1;2.1 The Langevin Equation;28
9.2;2.2 Mobility, Conductivity and Dielectric Constant;29
9.3;2.3 Energy Balance, Electron Temperature and Energy Relaxation;34
9.4;2.4 References;36
10;Chapter 3. Collisions;37
10.1;3.1 Cross Section, Mean Free Path and Collision Frequency;37
10.2;3.2 Classical Scattering by a Central Force;41
10.3;3.3 Inelastic Collisions;55
10.4;3.4 References;64
11;Chapter 4. Distribution Functions and the Boltzmann Equation;66
11.1;4.1 Averages and Collisional Rates;67
11.2;4.2 Equilibrium Distributions and Rates;68
11.3;4.3 The Boltzmann Equation;74
11.4;4.4 Expansion of the Boltzmann Equation for an Applied Electric Field;76
11.5;4.5 Distribution Function for an Applied Electric - Field Elastic Collisions only;81
11.6;4.6 Distribution Functions when Electron-Electron Collisions are Important ;83
11.7;4.7 Distribution Functions when Inelastic Collisions Dominate;86
11.8;4.8 Approximate Analytic Techniques for Determining Distribution Functions and Rates;92
11.9;4.9 References;110
12;Chapter 5. Transport Coefficients;112
12.1;5.1 Electrical Conductivity;112
12.2;5.2 Mobility;114
12.3;5.3 Diffusion;116
12.4;5.4 The Einstein Relation and Characteristic Energy;118
12.5;5.5 Corrections to the Langevin Equation;119
12.6;5.6 References;123
13;Chapter 6. The Fluid Equations;125
13.1;6.1 The Continuity Equation;126
13.2;6.2 The Momentum conservation Equation;127
13.3;6.3 The Energy-conservation Equation;128
13.4;6.4 References;130
14;Chapter 7. Electron-density Decay Processes;132
14.1;7.1 Diffusion;133
14.2;7.2 Recombination;145
14.3;7.3 Attachment;154
14.4;7.4 References;158
15;Chapter 8. DC Discharges – The Positive Column;161
15.1;8.1 Diffusion-dominated Discharges;161
15.2;8.2 Attachment-and Recombination-dominated Discharges;170
15.3;8.3 Constriction and Instability of the Positive Column;173
15.4;8.4 References;176
16;Chapter 9. Excited Species;178
16.1;9.1 Radiatively Decaying Species;179
16.2;9.2 Collisionally Decaying Species;179
16.3;9.3 References;195
17;Chapter 10. Atomic Neutral Gas Lasers;197
17.1;10.1 The Laser Concept;197
17.2;10.2 The Helium-neon Laser;202
17.3;10.3 Electron Collision-pumped Lasers;212
17.4;10.4 References;215
18;Chapter 11. Ion Lasers;217
18.1;11.1 Metal Vapor Lasers;217
18.2;11.2 Rare-gas Ion Lasers;218
18.3;11.3 References;225
19;Chapter 12. Molecular Gas Lasers;227
19.1;12.1 Molecular Structure and Nomenclature;227
19.2;12.2 The Molecular Nitrogen Laser;231
19.3;12.3 The Molecular Hydrogen Laser;237
19.4;12.4 CO2 Lasers;239
19.5;12.5 Excimer Lasers;254
19.6;12.6 References;265
20;Appendix A: Expansion of the Boltzmann Equation in Spherical Harmonics;271
21;Index;274
22;OTHER TlTLES IN THE SERIES IN NATURAL PHILOSOPHY;282