Dissociative Recombination of Molecular Ions

by Mats Larsson , Ann E. Orel

• ISBN13: 9780521828192
• ISBN10: 0521828198
• Edition: 1st
• Format: Hardcover
• Copyright: 2008-04-14
• Publisher: Cambridge University Press

Summary

Dissociative recombination (DR) of molecular ions with electrons is a complex, poorly understood molecular process. Its critical role as a neutralising agent in the Earth's upper atmosphere is now well established and its occurrence in many natural and laboratory produced plasma has been a strong motivation for studying the event. For the first time, theoretical concepts, experimental methodology and applications are united in one book, revealing the governing principles behind the gas-phase reaction. The book takes the reader through the intellectual challenges posed, describing in detail dissociation mechanisms, dynamics, diatomic and polyatomic ions and related processes, including dissociative excitation, ion pair formation and photodissociation. With the final chapter dedicated to applications in astrophysics, atmospheric science, plasma physics and fusion research, this is a focused, definitive guide to a fundamental molecular process. The book will appeal to academics within physics, physical chemistry and related sciences.

Table of Contents

Preface	p. ix
Introduction	p. 1
History 1900-1950	p. 1
History 1950-1970	p. 5
History 1970-1990	p. 7
History 1990-present	p. 10
Experimental methods	p. 11
Merged beams	p. 11
Ion storage rings	p. 30
Stationary afterglow technique	p. 51
Flowing afterglow technique	p. 59
Shock-tube technique	p. 68
Theoretical methods	p. 70
Introduction	p. 70
What is a resonance?	p. 75
Formal resonance theory	p. 78
Resonance parameters and structure	p. 83
Nonadiabatic couplings	p. 89
Calculation of dynamics	p. 93
The H[subscript 2 superscript +] molecule	p. 104
Diatomic hydride ions	p. 119
HeH[superscript +]	p. 119
NeH[superscript +], ArH[superscript +], KrH[superscript +], and XeH[superscript +]	p. 132
CH[superscript +]	p. 133
NH[superscript +] and OH[superscript +]	p. 139
LiH[superscript +]	p. 140
Diatomic ions	p. 143
Rare-gas dimer ions: He[subscript 2 superscript +], Ne[subscript 2 superscript +], Ar[subscript 2 superscript +], Kr[subscript 2 superscript +], Xe[subscript 2 superscript +]	p. 143
The atmospheric ions: O[subscript 2 superscript +], N[subscript 2 superscript +], and NO[superscript +]	p. 154
Other diatomic ions	p. 180
The H[subscript 3 superscript +] molecule	p. 184
History of H[subscript 3 superscript +]	p. 184
The dissociative recombination of H[subscript 3 superscript +]	p. 186
Polyatomic ions	p. 227
Dissociation dynamics in recombination of XH[subscript 2 superscript +] ions (X = C, N, O, S, P)	p. 227
Astrophysical molecular ions	p. 244
Cluster ions	p. 267
Hydrocarbon ions	p. 277
Other polyatomic ions	p. 283
Electron capture dissociation	p. 283
Related processes	p. 287
Dissociative excitation and ionization of molecular ions	p. 288
Ion-pair production	p. 294
Electron impact detachment of negative ions	p. 296
Electron-molecule scattering; dissociative attachment	p. 300
Photodissociation and photoionization	p. 308
Applications	p. 315
Molecular astrophysics	p. 315
Atmospheric physics and chemistry	p. 319
Plasma physics and fusion research	p. 320
References	p. 321
Index	p. 377
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