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Ion-Induced Electron Emission from Crystalline Solids : SPRINGER TRACTS IN MODERN PHYSICS - Hiroshi Kudo

Ion-Induced Electron Emission from Crystalline Solids

SPRINGER TRACTS IN MODERN PHYSICS

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Published: 9th October 2001
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This monograph deals with ion induced electron emission from crystalline solids bombarded by fast ions. During the past decade, electron spectroscopy combined with the ion channeling technique has revealed various "messages" about ion solid and electron solid interactions carried by the emitted elec trons. While the ion induced electrons produced by binary encounter pro cesses are of primary interest in this book, closely related topics such as the emission of ion induced Auger electrons from crystal targets are also reviewed, with emphasis on their interdisciplinary aspects, for example, their relation to photoelectron diffraction. In addition to these topics, the book describes the underlying physics and experimental techniques so that it should provide useful information for students and scientists working in ion beam based re search and development in various areas of atomic and solid state physics, materials science, surface science, etc. I am much indebted to the gererations of students who have passed through my laboratory, since they have stimulated me with elementary but essential questions in various phases of the studies. I am also grateful to T. Azuma, Y. Kido, K. Kimura, H. Naramoto, and S. Seki for critical reading of the manuscript. Tsukuba, August 2001 Hiroshi Kudo Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1o Terminology and Table of Symbols . . . . . . . . . . . . . . . . . . . . . . . 5 2. 2. 1 Notes on Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. 2 Frequently Used Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. Binary Encounter Electron Emission . . . . . . . . . . . . . . . . . . . . . . 7 3. 1 Ion Electron Elastic Collisions . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3. 2 Recoil Cross Section of Orbital Electrons . . . . . . . . . . . . . . . . . .

Introductionp. 1
Terminology and Table of Symbolsp. 5
Notes on Terminologyp. 5
Frequently Used Symbolsp. 6
Binary-Encounter Electron Emissionp. 7
Ion-Electron Elastic Collisionsp. 7
Recoil Cross Section of Orbital Electronsp. 9
Recoil from a Hydrogen-Like Atomp. 11
<$>Z_1^2<$> Scaling of the Electron Yieldp. 13
Remarks on the Binary-Encounter Modelp. 14
Experimental Approachesp. 14
Zero-Degree Electron Spectroscopyp. 15
Energy Distribution of All Electronsp. 15
Ion Channeling and High-Energy Shadowingp. 17
Classical Coulomb Shadowp. 17
Quantum-Mechanical Coulomb Shadowp. 19
Shadowing Effect: Interference of Shadow Conesp. 24
Shadowing Effect of High-Energy Ionsp. 27
Continuum Model of Channelingp. 28
Scaling of the Ion Trajectoryp. 28
Critical Anglesp. 30
Classical Behavior of Channeled Particlesp. 31
Statistical-Equilibrium Flux Distributionp. 31
Numerical Simulationsp. 32
Dechannelingp. 34
Experimental Methodsp. 37
Electron Energy Analysisp. 37
Parallel-Plate Spectrometerp. 37
Cylindrical-Mirror Analyzerp. 40
Efficiency of Electron Multipliersp. 42
Experimental Arrangementp. 43
Crystal Alignmentp. 45
Electron Escape from Solid Targetsp. 47
Electron Scattering in Solidsp. 47
180° Emission and Effective Escape Lengthsp. 49
Electron Loss from Projectile Ionsp. 52
Auger Electron Emission from Crystalsp. 55
Forward Scattering Effectp. 55
Crystal-Assisted Forward Scatteringp. 55
Forward Scattering of Ion-Induced Auger Electronsp. 57
Effect of Shadowing on Auger Electron Emissionp. 62
Experimental Conditionsp. 62
Energy-Degraded Auger Spectrap. 63
Multiple Elastic Scatteringp. 65
Determination of the Electron Stopping Powerp. 66
Binary-Encounter Electron Emission from Crystalsp. 71
Binary-Encounter Yieldp. 71
Normalized Channeling Yieldp. 74
Two-Component Model of the Electron Yieldp. 77
Electron Emission from Overlaid Crystalsp. 79
Thin Unshadowed Layersp. 79
ThickUnshadowed Layersp. 86
Shadowing for All Electrons in a Crystalp. 89
Hetero-Overlayersp. 90
Negligible Intrinsic Dechannelingp. 97
Unshadowed Crystal Electronsp. 98
Classical Aspects of High-Energy Shadowingp. 99
Electron Emission by Partially Stripped Ionsp. 103
Charge States of Channeled Ionsp. 103
Reduced Shadowing Effectp. 104
Enhanced Recoil Effectp. 105
Electron Scattering by a Screened Coulomb Fieldp. 105
Enhancement Factorp. 107
Method of Analysisp. 108
Determination of Zeffp. 109
Experimental Datap. 109
Screened and Unscreened Yieldsp. 110
Charge States of Nonchanneled Ionsp. 112
Analysis Resultsp. 114
Two Competitive Screening Effectsp. 118
Nonequilibrium Charge Statesp. 120
Effective Reduction of the Screening Lengthp. 122
Materials Analysis with Binary-Encounter Electronsp. 127
BEES and Ion Backscattering Analysisp. 127
Misoriented Crystal Latticep. 128
Polarity of the Zinc Blende Structurep. 130
Backward Channeling Microscopyp. 134
Bent Ionic Crystalsp. 137
Experimental Detailsp. 138
Abnormal Shadowing Patternsp. 140
Plastically Deformed Latticesp. 142
Related Topicsp. 145
Channeling Angular Dipsp. 145
Specularly Reflected Ionsp. 146
Low-Energy Shadowingp. 148
Concluding Remarksp. 151
Referencesp. 152
Indexp. 159
Table of Contents provided by Publisher. All Rights Reserved.

ISBN: 9783540422211
ISBN-10: 3540422218
Series: SPRINGER TRACTS IN MODERN PHYSICS
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 164
Published: 9th October 2001
Publisher: Springer-Verlag Berlin and Heidelberg Gmbh & Co. Kg
Country of Publication: DE
Dimensions (cm): 24.77 x 16.51  x 1.91
Weight (kg): 0.41