Desorption Induced by Electronic Transitions Diet V: Proceedings of the Fifth International Workshop, Taos, Nm, Usa, April 1-4, 1992

ISBN-13: 9783642780820 / Angielski / Miękka / 2011 / 348 str.

Alan R. Burns; Ellen B. Stechel; Dwight R. Jennison

Opis

This volume in the Springer Series on Surface Sciences presents a recent account of advances in the ever-broadening field of electron-and photon-stimulated sur face processes. As in previous volumes, these advances are presented as the proceedings of the International Workshop on Desorption Induced by Electronic Transitions; the fifth workshop (DIET V) was held in Taos, New Mexico, April 1-4, 1992. It will be abundantly clear to the reader that "DIET" is not restricted to desorption, but has for several years included photochemistry, non-thermal surface modification, exciton self-trapping, and many other phenomena that are induced by electron or photon bombardment. However, most stimulated surface processes do share a common physics: initial electronic excitation, localization of the excitation, and conversion of electronic energy into nuclear kinetic energy. It is the rich variation of this theme which makes the field so interesting and fruitful. We have divided the book into eleven parts in order to emphasize the wide range of materials that are examined and to highlight recent experimental and theoretical advances. Naturally, there is considerable overlap between sections, and many papers would be appropriate in more than one part. Part I focuses on perhaps the most active area in the field today: electron attachment. Here the detection and characterization of negative ions formed by attachment of elec trons supplied externally from the vacuum are discussed. In addition, the first observations of negative ions formed by substrate photoelectrons are presented."

Spis treści

I Electron Attachment.- Surface Reactions and Desorption by Electron Attachment.- Desorption of H?, O? and OH? Ions During Impact of Very Low Energy Electrons on Surfaces.- Electron and Photon Stimulated Desorption of Negative Ions from Oriented Physisorbed Molecules.- Resonance Electron Scattering by O2 Monolayers on Graphite: Reinterpreted.- Non-Adiabatic Curve Crossings in Dissociative Electron Attachment of Condensed O2.- Charge-Transfer Photodissociation and Photoreaction in Adsorbates at a Metal Surface.- II Photodesorption and Photochemistry.- Desorption Induced by Femtosecond Laser Pulses: Surface Dynamics at High Electronic Temperatures.- A New Way to Characterize the Excitation Mechanism in Surface Photochemistry.- Photodesorption Dynamics and Structural Information for O2 Adsorbed on Pd(111).- Dynamics of Ammonia Photodesorption from GaAs(100): A Vibration-Mediated Mechanism.- Molecular Photochemistry on Surfaces: Role of Adsorbate — Substrate Structure.- III Laser-Induced Ion Desorption.- Desorption of Ions and Neutrals with >6 eV Laser Light.- Laser-Induced Desorption of Positive Ions from Wide Band Gap Insulators.- Laser-Induced Desorption from Sapphire Surfaces.- UV Pulsed Laser Desorption from Ag/Al/Sapphire Films: Changes in the Ion Desorption Process for Excitations near the Ag d-Band Threshold.- IV High Energy Processes.- Core-Induced Photodissociation of Surface Molecules Investigated by Ionic Desorption and Correlated Electronic Spectra.- The Relevance of Gas-Phase Core-Electron Excitation and Decay Phenomena to Molecular Adsorbate Structure and Desorption.- Dissociation in Fast Molecule-Surface Collisions.- Orientation Effects in the Scattering of H2 and H+2 from Cu(111).- Desorption from LiF(100) by Singly- and Doubly-Charged Hyperthermal He Ions.- Ion-Induced Electron Excitation at Magnetic Surfaces.- V Theory.- Excited States Lifetimes Near Surfaces.- ESD from Physisorbed Layers on Metal Surfaces: Theoretical Investigation of Two Desorption Scenarios.- Computer Simulation of DIET Processes: Molecular Dynamics with Electronic Transitions.- Some Current Theoretical Insights on DIET.- VI Electron Stimulated Desorption and Chemistry of Adsorbates on Metals.- Isotope Effect in Electron Stimulated Desorption — The Role of Internal Degrees of Freedom in CO Desorption from Pt(111).- Quantum-Resolved Angular Distributions of Neutral Products in Electron-Stimulated Surface Processes.- Electron Stimulated Desorption of the Metallic Substrate at Monolayer Coverage: Sensitive Detection via 193 nm Laser Photoionization of Neutral Aluminum Desorbed from CH3O/Al(111).- Structure and Kinetics of Electron Beam Damage in a Chemisorbed Monolayer: PF3 on Ru(0001).- Electron-Induced Decomposition of Metal Carbonyls on Ag(111).- Quantum-Resolved Stimulated Surface Reactions.- VII Spatially Resolved DIET.- Atomic Scale Desorption and Fragmentation with the STM.- Atomic Force Microscopy of Surface Defects on NaCl(100).- Electron Microscopy of Electron-Stimulated Processes at Oxide Surfaces.- VIII Semiconductors.- State-Resolved Studies of the Laser-Induced Desorption of NO from Si(111): The Importance of Localized Excitations.- Laser-Induced Electronic Processes on Semiconductor Surfaces.- Mechanisms of Metastable Atom Quenching on GaAs(100).- The Synchrotron Radiation Induced Chemistry of the Adamantane/Si(111)-7×7 Surface.- Photolysis Enhancement by Excitation of Si(2p) Core Level Electrons in SiF4/Ge(100).- Photon Stimulated Desorption of Fluorine from Semiconductor Surfaces.- ESDIAD Studies of Chlorine Adsorption at Silicon(100).- Probing GaSb(110) Surface and Interfaces by Photon Stimulated Desorption (PSD).- Photon Stimulated H+ Ion Desorption Studies of Silicon Surfaces Covered by Alkali Metals.- IX Oxides.- Low Energy Excitations and Desorption Dynamics from Oxide Surfaces.- Electron Stimulated Desorption (ESD) of Ammonia on TiO2(110): The Influence of Substrate Defect Structure.- Electron Stimulated Desorption of O+ from TiO2(110)-SO2.- X Alkali Halides.- Surface Deformation and Change in Reflectivity During Electron Irradiation: Results for the CaF2(111) Surface.- The Role of Hot Hole Migration in Electronic Sputtering of Alkali Halides.- New Mechanism for the Desorption of Excited Atoms by Photon Bombardment of Alkali Halide Crystals.- Simultaneous Measurements of Optical Absorption and Electron Stimulated Li Desorption on LiF Crystals.- Rotational Distributions Following DIET: CN* from Alkali-Rich Surfaces.- Auger Studies of Damage and Charging in NaCl.- XI Cryogenic Overlayers.- DIET from Cryogenic Layers: Subject and Tool of Investigation.- Low-Energy ESD of Metastable Atoms from Ar, Kr, Xe(111) Condensed Films.- Photo-Stimulated Desorption of Ne Metastables from Thin Ne Layers on Solid Ar, Kr, and Xe.- Dynamics of Multi-Electronic Photon Excitation in Multilayers of Argon Studied by Kinetic Energy Analysis of Photodesorbed Ions.- Photon Stimulated Desorption from Cryogenic Surfaces: Predicting the Vacuum Behavior of the Superconducting Supercollider.- Erratum in DIET IV Proceedings.- Index of Contributors.