## Many-Particle Spectroscopy of Atoms, Molecules, Clusters, and SurfacesSince the early days of modem physics spectroscopic techniques have been employed as a powerful tool to assess existing theoretical models and to uncover novel phenomena that promote the development of new concepts. Conventionally, the system to be probed is prepared in a well-defined state. Upon a controlled perturbation one measures then the spectrum of a single particle (electron, photon, etc.) emitted from the probe. The analysis of this single particle spectrum yields a wealth of important information on the properties of the system, such as optical and magnetic behaviour. Therefore, such analysis is nowadays a standard tool to investigate and characterize a variety of materials. However, it was clear at a very early stage that real physical compounds consist of many coupled particles that may be excited simultaneously in response to an external perturbation. Yet, the simultaneous (coincident) detection of two or more excited species proved to be a serious technical obstacle, in particular for extended electronic systems such as surfaces. In recent years, however, coincidence techniques have progressed so far as to image the multi-particle excitation spectrum in an impressive detail. Correspondingly, many-body theoretical concepts have been put forward to interpret the experimental findings and to direct future experimental research. This book gives a snapshot of the present status of multi-particle coincidence studies both from a theoretical and an experimental point of view. It also includes selected topical review articles that highlight the achievements and the power of coincident techniques. |

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### Contents

EXPERIMENTAL STUDY OF INTERFERENCES IN NONCOPLANAR E 2E CROSS SECTIONS | 3 |

IONIZATION OF LASER ORIENTED SODIUM ATOMS BY POLARIZED ELECTRONS | 15 |

TIMEDEPENDENT CALCULATION OF ELECTRONHYDROGEN SINGLE DIFFERENTIAL IONIZATION CROSS SECTIONS USING PSEUDO... | 27 |

E 2E PROCESSES ON ISOELECTRONIC HYDROGEN AND ALKALILIKE IONS SCALING LAWS | 45 |

ASYMPTOTICS OF THE HELIUM BOUND STATES | 57 |

AN APPLICATION OF THE COULOMB SCATTERING THEORY TO IONIZATION PROCESSES | 71 |

EXACT VERSUS LOCAL EXCHANGE IN DISTORTEDWAVE BORN CALCULATIONS OF ELECTRON IMPACT IONISATION | 81 |

ON THE INFLUENCE OF USING DIRACFOCK RATHER THAN DENSITY FUNCTIONAL POTENTIALS IN THE RELATIVISTIC DWBA APPR... | 91 |

E 3E AS A TWOSTEP PROCESS | 283 |

E 3E PROCESSES A BRIEF THEORETICAL REVIEW AND NEW IDEAS | 291 |

ON THE IMPORTANCE OF THE SECOND ORDER TERM FOR DOUBLE EXCITATION PROCESSES OF HELIUM BY CHARGED PARTICLES | 307 |

PS E+E | 319 |

DIFFERENTIAL MEASUREMENTS OF SINGLE AND MULTIPLE IONISATION OF ARGON BY POSITRON IMPACT | 331 |

MANYPARTICLE SPECTROSCOPY OF MOLECULES AND CLUSTERS | 341 |

A MULTITECHNIQUE INVESTIGATION OF DOUBLY EXCITED STATES OF N₂ | 343 |

FRAGMENT IONPHOTON COINCIDENCE FIPCO STUDY OF DISSOCIATIVE IONIZATION ACCOMPANYING LIGHT EMISSION BY ELECT... | 353 |

EFFECTIVE POTENTIAL STUDY OF E2E PROCESSES WITH POLARIZED ELECTRONS | 99 |

LOW ENERGY E 2E IONIZATION OF ARGON IN THE EQUAL ENERGY SHARING GEOMETRY | 113 |

LOW ENERGY INNERVALENCE ELECTRON IMPACT IONIZATION OF ARGON | 127 |

ELECTRONELECTRON COINCIDENCE STUDIES IN XENON WITH PRECISELY TAILORED EQUIPMENT | 135 |

INFLUENCE OF POST COLLISION INTERACTION ON THE LINESHAPE OF AUGERELECTRON SPECTRA IN ELECTRON IMPACT IONIZA... | 149 |

DIRECT OBSERVATION OF SATELLITE AND INNER VALENCE STATES OF Xe² | 163 |

SPINFLIP TRANSITIONS FOR THE RESONANTLY EXCITED XE6P₃₂N₅O₂ₓ₃O₂₃ AUGER SPECTRUM | 173 |

MULTIPLE SCATTERING PROCESSES IN ION ATOM SINGLE IONISATION | 189 |

RESCATTERING OF AN ATOMIC ELECTRON IN A TIMEDEPENDENT FIELD | 203 |

COINCIDENCE STUDIES ON ATOMS AND IONS II MULTIPLE IONIZATIONEXCITATION PROCESSES | 213 |

RECENT PROGRESS IN THEORY OF ATOMIC DOUBLE PHOTOIONIZATION | 215 |

THE DOUBLE IONISATION OF HELIUM BY BOTH PHOTON AND ELECTRON IMPACT | 231 |

IS THE OPTICAL LIMIT APPROACHED IN COPLANAR E 3E EXPERIMENTS ON HE AT HIGH AND INTERMEDIATE ENERGIES? | 245 |

THE ROLE OF THE MOMENTUM TRANSFER IN E 3E COLLISIONS ON HELIUM | 259 |

ELECTRONIMPACT DOUBLE IONIZATION TO INVESTIGATE ELECTRON CORRELATION | 271 |

AN ELECTRON MOMENTUM SPECTROSCOPY STUDY ON MOLECULES HAVING TWO EQUIVALENT FUNCTIONAL GROUPS | 369 |

STUDY OF MULTICAPTURE CROSS SECTIONS USING MULTICOINCIDENCE TECHNIQUE IN XE³⁰ ON C₆₀ COLLISIONS | 381 |

ON THE ROLE OF SCREENING IN METALLIC CLUSTERS | 395 |

CORRELATION AND ELECTRONIC STRUCTURE OF SOLIDS AND SURFACES STUDIED BY COINCIDENCE TECHNIQUES | 405 |

ASSORTED REMARKS ON DENSITY FUNCTIONAL THEORY | 407 |

E 2E STUDIES OF CONDENSED MATTER A REVIEW OF RECENT RESULTS | 417 |

THEORY OF ELECTRON AND PHOTONINDUCED TWOELECTRON EMISSION FROM SURFACES | 435 |

E 2E SPECTROSCOPY OF HIGHTC CUPRATE OXIDES | 451 |

DOUBLEELECTRON PHOTOEMISSION FROM SURFACES | 461 |

THE ELECTRONIC STRUCTURE OF AGCU100 AND PDCU100 SURFACE ALLOYS STUDIED BY AUGERPHOTOELECTRON COINCIDENCE... | 471 |

THE EFFECT OF CONFINEMENT IN DOUBLE PHOTOEMISSION | 481 |

SEMICLASSICAL STUDY OF THE RYDBERG ATOMS NEAR A METAL SURFACE | 493 |

503 | |

### Other editions - View all

Many-Particle Spectroscopy of Atoms, Molecules, Clusters, and Surfaces J. Berakdar,J. Kirschner No preview available - 2012 |

### Common terms and phrases

amplitude angular distribution argon asymptotic Auger electron Auger transitions band beam Berakdar and Kirschner binding energy Born approximation calculations Chem coincidence collision continuum Coulomb curve density detection detector differential cross section dissociation double ionization DWBA dynamic spin polarization edited by Berakdar effects electron correlation electron impact electron-electron emission energy loss equation excited experimental data experiments Figure final FIPCO Gamow factor geometry Green function Hartree-Fock helium incident electron incident energy initial intensity interaction ionisation Kheifets kinematics Kluwer Academic/Plenum Publishers Lett measurements Molecules momenta momentum transfer observed obtained orbital outgoing electrons parameters particle peak photoelectron photoemission photoionization photon Phys plane positron potential predicted projectile pseudostates quantum recoil ion region scattering angle SDCS second Born shown singlet spectra spectrometer spectroscopy spectrum spin polarization structure surface symmetric TDCS theoretical theory tion two-electron valence valence band values vector wave function wavefunction Weigold Whelan