Fragmentation processes : topics in atomic and molecular physics / edited by Colm T. Whelan, Old Dominion University.
"Revolutionary advances in experimental techniques and spectacular increases in computer power over recent years have enabled researchers to develop a much more profound understanding of the atomic few-body problem. One area of intense focus has been the study of fragmentation processes. Coveri...
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| Language: | English |
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Cambridge :
Cambridge University Press,
2012.
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Table of Contents:
- Intro
- Contents
- Contributors
- Preface
- 1 Direct and resonant double photoionization: from atoms to solids
- 1.1 Introduction
- 1.2 Direct double photoionization
- 1.2.1 The He atom
- 1.2.2 The H2 molecule and the four-body problem
- 1.2.3 Direct DPI in solids and surfaces
- 1.3 Indirect double photoionization
- 1.3.1 Auger photoelectron coincidence spectroscopy (APECS) applied to molecules
- 1.3.2 Auger photoelectron coincidence spectroscopy(APECS) applied to solids
- 1.3.3 Interference and coherence effects in indirect double photoionization
- 1.4 Conclusions
- References
- 2 The application of propagating exterior complex scaling to atomic collisions
- 2.1 Introduction
- 2.2 Introduction to exterior complex scaling
- 2.2.1 A one-dimensional example
- 2.2.2 Numerical method: propagating exterior complex scaling
- 2.3 Application of ECS to electron-hydrogen scattering
- 2.3.1 Extracting scattering amplitudes from surface integrals
- 2.3.2 Propagating exterior complex scaling considerations
- 2.4 Scattering in electron-hydrogen system
- 2.5 Exterior complex scaling for electron-helium scattering
- 2.5.1 Extracting scattering amplitudes
- 2.5.2 S-wave model for electron-helium scattering
- 2.6 Summary and outlook for the future
- References
- 3 Fragmentation of molecular-ion beams in intense ultrashort laser pulses
- 3.1 Introduction
- 3.2 Experimental method
- 3.2.1 Laser
- 3.2.2 Ion beam
- 3.2.3 Crossing the laser and ion beams
- 3.2.4 Coincidence beam-fragment measurements
- 3.2.5 Coincidence 3D momentum imaging of beam fragments
- 3.3 Benchmark molecules
- 3.3.1 One electron diatomic molecule
- H2+
- 3.3.2 Simplest polyatomic molecule
- H3+
- 3.4 Complex and/or unique molecular ions
- 3.4.1 Vibrationally cold molecular ions
- CO2+
- 3.4.2 Vibrationally semi-cold molecular ions
- NO2+.
- 3.4.3 Other complex molecular ions
- 3.5 Summary and outlook
- References
- 4 Atoms with one and two active electrons in strong laser fields
- 4.1 Introduction
- 4.2 Theoretical model
- 4.3 Two-photon double ionization of helium
- 4.4 DC-assisted double photoionization of He and H-
- 4.5 Strong-field ionization of lithium and hydrogen
- 4.6 High harmonics generation
- 4.7 Time delay in atomic photoionization
- References
- 5 Experimental aspects of ionization studies by positron and positronium impact
- 5.1 Introduction
- 5.2 Integral cross sections for positron impact ionization
- 5.3 Differential cross sections for positron impact ionization
- 5.4 Positronium-induced fragmentation
- 5.5 Conclusions and outlook
- References
- 6 (e,2e) spectroscopy spectroscopy using fragmentation processes
- 6.1 Introduction
- 6.2 Background
- 6.3 Theory
- 6.4 Electron momentum spectroscopy results
- 6.5 Low-energy (e,2e) results
- 6.6 Conclusion
- References
- 7 A coupled pseudostate approach to the calculation of ion-atom fragmentation processes
- 7.1 Introduction
- 7.2 Theory
- 7.2.1 The impact parameter method and extraction of the differential motion of the projectile
- 7.2.2 Extracting the differential motion of the ejected electron
- 7.3 Antiproton-induced ionization
- References
- 8 Electron impact ionization using (e,2e) coincidence techniques from threshold to intermediate energies
- 8.1 Introduction
- 8.1.1 Description of the experimental coincidence technique
- 8.1.2 (e,2e) experiments near threshold
- 8.1.3 (e,2e) experiments from threshold to intermediate energies
- 8.1.4 Summary
- 8.2 Experimental methods and techniques
- 8.2.1 Materials
- 8.2.2 Design of the electron gun and analyzers
- 8.2.3 Example: the (e,2e) spectrometer in Manchester
- 8.2.4 Multi-detection
- the COLTRIMS reaction microscope.
- 8.3 Theoretical models
- 8.3.1 Near threshold
- 8.3.2 The intermediate energy regime
- 8.4 Atomic targets
- 8.4.1 Near-threshold measurements on helium
- 8.4.2 Measurements on helium at intermediate energies
- 8.4.3 Measurements on the noble gases in the perpendicular plane
- 8.5 Molecular targets
- 8.5.1 Measurements from H2
- 8.5.2 Measurements from polyatomic molecules
- 8.6 Experiments from laser-aligned atoms
- 8.6.1 The laser excitation process
- 8.6.2 Ionization from laser-excited magnesium
- 8.7 Future work and conclusions
- References
- 9 (e,2e) processes on atomic inner shells
- 9.1 (e,2e) processes
- an overview
- 9.2 Non-relativistic theory
- 9.3 The distorted wave Born approximation
- 9.3.1 Geometries
- 9.3.2 The ionization of the 2p state of argon
- 9.4 Inner-shell ionization of heavy metal targets at relativisticimpact energies
- 9.4.1 Relativistic, distorted wave Born approximation
- 9.5 General features of the cross section
- 9.5.1 Coplanar asymmetric-Ehrhardt-geometry
- 9.5.2 Coplanar symmetric-Pochat-geometry
- 9.6 Special features
- 9.6.1 Spin-dependent effects using unpolarized beams on unpolarized targets
- 9.6.2 Distortion effects
- References
- 10 Spin-resolved atomic (e,2e) processes
- 10.1 Introduction
- 10.2 Experimental considerations
- 10.2.1 Definition of measured and derived parameters
- 10.2.2 Generation of spin-polarized electron beams
- 10.3 Low-Z targets and low electron impact energies
- 10.4 High-Z targets and low electron impact energies
- 10.5 High-Z targets and high electron impact energies
- 10.6 Longitudinally polarized electrons
- 10.7 Conclusion
- References
- Index.