Electron Impact Phenomena

And the Properties of Gaseous Ions

1st Edition - January 1, 1957
Authors: F. H. Field, J. L. Franklin
Editors: H. S. W. Massey, Keith A. Brueckner
Language: English
eBook ISBN:
9 7 8 - 1 - 4 8 3 2 - 7 5 6 9 - 7

Electron Impact Phenomena and the Properties of Gaseous Ions, Revised Edition deals with data pertaining to electron impact and to molecular gaseous ionic phenomena. This book… Read more

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Electron Impact Phenomena and the Properties of Gaseous Ions, Revised Edition deals with data pertaining to electron impact and to molecular gaseous ionic phenomena. This book discusses electron impact phenomena in gases at low pressure that involve low-energy electrons, which result in ion formation. The text also describes the use of mass spectrometers in electron impact studies and the degree of accuracy obtained when measuring electron impact energies. This book also reviews relatively low speed electrons and the transitions that result in the ionization of the atomic system. This text then discusses diatomic molecules whose mass spectra can be interpreted using the Franck-Condon principle. This selection also presents some examples of ions in solution that resemble the gaseous ions formed by electron impacts. The energies of these gaseous ions can be the key to understanding the mechanisms of ionic reactions. These examples include the olefin addition reactions and catalytic cracking. This text will prove invaluable for research chemists, students, and professors in chemistry and related fields such as organic chemistry and electrochemistry.

Preface to Revised Edition

Preface to the First Edition

I. Introduction

II. Apparatus and Methods

A. Mass Spectrometric Apparatus

B. Apparatus Not Using Mass Analysis

C. Ionization Efficiency Curves

1. Elementary Considerations

2. Fine Structure in Ionization Efficiency Curves

3. Ionization Efficiency Curves of Negative Ions

D. Ionization and Appearance Potentials

1. Positive Ions

2. Negative Ions

E. Instrumental Factors Affecting Electron Energy

F. Reliability of Ionization and Appearance Potential Measurements

III. Theoretical

A. Ionization Cross Sections

B. Excited Ionic States and Autoionization

C. Franck-Condon Principle

D. Ionization and Dissociation of N2

E. Ionization and Dissociation of Symmetrical Polyatomic Molecules

F. Quasi-Equilibrium Theory of Mass Spectra of Large Molecules

IV. Energetic Considerations

A. Heat of Formation of Ions

B. Activation Energies of Molecule-Ion Decompositions

C. Kinetic Energy of Ions

D. Ionization Potentials

E. Bond Strengths

F. Bond Strengths in Ions

G. Negative Ions

H. Heat of Dissociation of N2 and CO and the Heat of Sublimation of Carbon

V. Mass Spectral Considerations

A. Mass Spectra

1. Diatomic Molecules

2. Polyatomic Molecules

B. Total Ionization

C. Multiply-Charged Ions

D. Rearrangement

E. Metastable Ions

F. Temperature Coefficients of Mass Spectra

G. Mass Spectra of Isotopically Substituted Molecules

H. Secondary Processes in the Mass Spectrometer

VI. Implications for Chemical Reactions

A. Olefin Addition Reactions

B. Rearrangement

C. Catalytic Cracking

D. Solvolysis of Aromatic Diazonium Salts

E. Aromatic Substitution

F. Non-Planar Ions

G. Charge Transfer Complexes

Appendix - Ionization Potentials, Appearance Potentials, and Heats of Formation of Gaseous Positive Ions Table 1

Table 45

Negative Ions

H Ions

Alkali Metal Ions

Ions Containing B

Ions Containing C

Ions Containing N

Ions Containing O

Ions Containing Halogen Atoms

Ions Containing Si

Ions Containing S, Se, and Te

Ions Containing Sb and Bi

Hg Ions

References

Author Index

Subject Index