

Beschreibung
Within the last 30 years, electron energy-loss spectroscopy (EELS) has become a standard analytical technique used in the transmission electron microscope to extract chemical and structural information down to the atomic level. In two previous editions, Elect...Within the last 30 years, electron energy-loss spectroscopy (EELS) has become a standard analytical technique used in the transmission electron microscope to extract chemical and structural information down to the atomic level. In two previous editions, Electron Energy-Loss Spectroscopy in the Electron Microscope has become the standard reference guide to the instrumentation, physics and procedures involved, and the kind of results obtainable. Within the last few years, the commercial availability of lens-aberration correctors and electron-beam monochromators has further increased the spatial and energy resolution of EELS. This thoroughly updated and revised Third Edition incorporates these new developments, as well as advances in electron-scattering theory, spectral and image processing, and recent applications in fields such as nanotechnology. The appendices now contain a listing of inelastic mean free paths and a description of more than 20 MATLAB programs for calculating EELS data.
Inhalt
Chapter 1. An Introduction to EELS
1.1. Interaction of Fast Electrons with a Solid
1.2. The Electron Energy-Loss Spectrum
1.3. The Development of Experimental Techniques
1.3.1. Energy-Selecting (Energy-Filtering) Electron Microscopes
1.3.2. Spectrometers as Attachments to Electron Microscopes
1.4. Alternative Analytical Methods
1.4.1. Ion-Beam Methods
1.4.2. Incident Photons
1.4.3. Electron-Beam Techniques
1.5. Comparison of EELS and EDX Spectroscopy
1.5.1. Detection Limits and Spatial Resolution
1.5.2. Specimen Requirements
1.5.3. Accuracy of Quantification
1.5.4. Ease of Use and Information Content
1.6. Further Reading
Chapter 2. Energy-Loss Instrumentation
2.1. Energy-Analyzing and Energy-Selecting Systems
2.1.1. The Magnetic-Prism Spectrometer
2.1.2. Energy-Filtering Magnetic-Prism Systems
2.1.3. The Wien Filter
2.1.4. Electron Monochromators
2.2. Optics of a Magnetic-Prism Spectrometer
2.2.1. First-Order Properties
2.2.2. Higher-Order Focusing
2.2.3. Spectrometer Sesigns
2.2.4. Practical Considerations
2.2.5. Spectrometer Alignment
2.3. The Use of Prespectrometer Lenses
2.3.1. TEM Imaging and Diffraction Modes
2.3.2. Effect of Lens Aberrations on Spatial Resolution
2.3.3. Effect of Lens Aberrations on Collection Efficiency
2.3.4. Effect of TEM Lenses on Energy Resolution
2.3.5. STEM Optics
2.4. Recording the Energy-Loss Spectrum
2.4.1.Spectrum Shift and Scanning
2.4.2. Spectrometer Background
2.4.3. Coincidence Counting
2.4.4. Serial Recording of the Energy-Loss Spectrum
2.4.5. DQE of a Single-Channel System
2.4.6. Serial-Mode Signal Processing
2.5. Parallel Recording of Energy-Loss Data
2.5.1. Types of Self-Scanning Diode Array
2.5.2. Indirect Exposure Systems
2.5.3. Direct Exposure Systems
2.5.4. DQE of a Parallel-Recording System
2.5.5. Dealing with Diode Array Artifacts
2.6. Energy-Selected Imaging (ESI)
2.6.1. Post-Column Energy Filter
2.6.2. In-Column Filters
2.6.3. Energy Filtering in STEM Mode
2.6.4. Spectrum-Imaging
2.6.5. Elemental Mapping
2.6.6. Comparison of Energy-Filtered TEM and STEM
2.6.7. Z-Contrast and Z-Ratio Imaging
Chapter 3. Physics of Electron Scattering
3.1. Elastic Scattering
3.1.1. General Formulas
3.1.2. Atomic Models
3.1.3. Diffraction Effects
3.1.4. Electron Channeling
3.1.5. Phonon Scattering
3.1.6. Energy Transfer in Elastic Scattering
3.2. Inelastic Scattering
3.2.1. Atomic Models
3.2.2. Bethe Theory
3.2.3. Dielectric Formulation
3.2.4. Solid-State Effects
3.3. Excitation of Outer-Shell Electrons
3.3.1. Volume Plasmons
3.3.2. Single-Electron Excitation
3.3.3. Excitons
3.3.4. Radiation Losses
3.3.5. Surface Plasmons
3.3.6. Surface-Reflection Spectra
3.3.7. Plasmon Modes in Small Particles
3.4. Single, Plural, and Multiple Scattering
3.4.1. Poisson's Law
3.4.2. Angular Distribution of Plural Inelastic Scattering
3.4.3. Influence of Elastic Scattering
3.4.4. Multiple Scattering
3.4.5. Coherent Double-Plasmon Excitation
3.5. The Spectral Background to Inner-Shell Edges
3.5.1. Valence-Electron Scattering
3.5.2. Tails of Core-Loss Edges
3.5.3. Bremsstrahlung Energy Losses
3.5.4. Plural Scattering Contributions to the Background
3.6. Atomic Theory of Inner-Shell Excitation
3.6.1. Generalized Oscillator Strength
3.6.2. Relativistic Kinematics of Scattering
3.6.3. Ionization Cross Sections
3.7. The Form of Inner-Shell Edges
3.7.1. Basic Edge Shapes
3.7.2. Dipole Selection Rule
3.7.3. Effect of Plural Scattering
3.7.4. Chemical Shifts in Threshold Energy...
