Photons And Continuum States Of Atoms And Molecules: Proceedings Of A Workshop Cortona, Italy, June 16-20, 1986 (springer Proceedings In Physics)

Since 1981 there has been an attempt in Europe to organize a series of small meetings/workshops/tavole rotonde with the aim of bringing together physi­ cists and chemists interested in problems concerning atoms or molecules in­ teracting with external photons where the continua are investigated. The number of problems that fall into this category turns out to be vast. However, it is not possible to make a strict separation into problems con­ cerning atomic and molecular collisions and those related to the usual spec­ troscopy. This admixture of two disciplines, discussions on the role of photons and on the interaction of external electromagnetic fields with the continuum provided a central motivation for these workshops. The fourth of this series of meetings was held at Cortona between June 16 and 20, 1986. It was attended by about 100 researchers in the field and there were 43 presentations, all having equal time. These talks form the subject matter of this volume. The idea of publishing the proceedings of these meetings is not new. It allows one to have small meetings in which the subject matter can be discussed at length in a lively atmosphere. However, after the meeting is over, the speakers can collect their thoughts and produce articles in which the results of their interaction with the other participants can be incorporated. Front Matter....Pages I-XI Front Matter....Pages 1-1 Microwave Excitation and Ionization....Pages 2-7 Nonlinear Electron Dynamics Within the Stretched Hydrogen Atom in Intense Microwaves....Pages 8-12 One-Dimensional Atomic Physics....Pages 13-21 Is Subthreshold Ionization a Chaotic Phenomenon?....Pages 22-27 Stochasticity in Hydrogen in Presence of dc and ac Fields....Pages 28-35 The Problem of Laser-Induced Tunnel Ionization....Pages 36-46 An L 2 Method for Continuum States....Pages 47-54 Collective Effects in Multiphoton Ionization: Application to Two-Photon One-Electron Ionization of Xenon....Pages 55-61 Permanent Quantum Beats from Coupling of Two Atomic Bound States to a Single Autoionizing State....Pages 62-67 Electric Field Effects on Structure in the Continuum....Pages 68-75 Front Matter....Pages 77-77 Above-Threshold Ionization with Linear and Circular Polarizations....Pages 78-83 Dressing of Continuum States and Manipulation of Intermediate Resonances in Multiphoton Ionisation....Pages 84-90 Theoretical Models for Above-Threshold Ionization in Atomic Hydrogen....Pages 91-97 Non-Perturbative Theory of Above-Threshold Ionization....Pages 98-103 Multiphoton Ionisation Towards Multiple Continua: The Role of Space Charge....Pages 104-110 Two-Photon Above-Threshold Ionization: Study of a Schematic Model Atom....Pages 111-117 Multiphoton Absorption Above the Ionization Threshold....Pages 118-124 Front Matter....Pages 125-125 Bound-Continuum Transitions of Na 2 Studied by Doppler Photofragment Spectroscopy....Pages 126-133 Mechanism of Laser Induced Decomposition of Gaseous Polyatomic Molecules....Pages 134-142 Coupled Equations and the Bloch-Nordsieck Representation for Molecules....Pages 143-148 Front Matter....Pages 125-125 The Franck-Condon Principle....Pages 149-156 Front Matter....Pages 157-157 Reactive Collision Dynamics of the Collision System Mg + H 2 Using Far Wing Laser Scattering....Pages 158-165 Laser Pulse-Induced Molecular Collisions: Effect of the Temporal Width of the Pulse....Pages 166-170 Charge Transfer in Collisions and in Complexes Involving Excited Atoms....Pages 171-177 Laser-Induced Charge Transfer in Ion-Atom Collisions....Pages 178-185 Collisional Ionization in Laser-Excited Barium Vapor....Pages 186-194 Laser-Assisted Ionization in the He*(2 1 S, 2 3 S) + He(l 1 S) Collision System....Pages 195-202 The Collision Dynamics of Associative Ionization....Pages 203-207 Production of Atomic Rydberg States in Optical Collisions....Pages 208-213 Energy Transfer Collisions in Laser-Excited Mixtures of Alkali Vapors....Pages 214-219 The Far Wing Behaviour of the LICET Lineshape....Pages 220-226 High-Resolution Lineshape Study of a LICET Process in the Far-Wing....Pages 227-232 Collisionally Aided Coherent Emission at an Optical Frequency....Pages 233-238 Front Matter....Pages 239-239 Close-Coupling Solution of Radiative e-H + Scattering in a Laser Field....Pages 240-245 Electron-Proton and Electron-Hydrogen Atom Collisions in the Presence of a Radiation Field....Pages 246-254 Electron Scattering in Intense, High-Frequency Laser Fields....Pages 255-264 Applications of Generalized Coherent States....Pages 265-269 High Intensity Effects in Multiphoton Free-Free Transitions....Pages 270-280 New Results for Perturbative Calculations of Free-Free Scattering....Pages 281-287