Atomic Physics with Positrons

Invited Papers.- Positron-Impact Ionization and Positronium Formation.- Inelastic Positron Collisions in Gases.- Positron-Atom Differential Scattering Measurements.- Total and Inelastic Positron Scattering Cross Sections.- Studies of Inelastic Positron Scattering Using 2.3 and 3 M Spectrometers.- Recent Developments in the Theory of Fast Positron-Atom Collisions.- New Understanding of Atomic Physics Using High Velocity Positrons.- Calculations of Scattering Cross Sections and Annihilation Rates in Low Energy Collisions of Positrons with Molecular Hydrogen.- The AB Initio Inclusion of Polarisation Effects in Low-Energy Positron-Molecule Collisions Using the R-Matrix Method.- Positron-Molecule Collisions: Elastic, Inelastic and Differential Cross Section Calculations.- Field Theory of Electron and Positron Scattering from Atomic and Molecular Systems.- The High Brightness Beam at Brandeis.- A High Intensity Positron Beam at the Brookhaven Reactor.- Field Assisted Moderators.- Production of Short-Lived Positron Sources.- Electrostatic Lenses: How to Roll Your Own.- Theoretical Aspects of Positronium Collisions.- Electron Capture from Solids by Positrons.- On the Production of a Timed Positronium Beam by Positron-Gas Scattering.- A Positronium Beam and Positronium Reflection from LiF.- Monoenergetic Ps Created in a Gas and Ps-He Collision Cross Section Measurements.- Positron- (and Electron-)Alkali Atom Total Scattering Measurements.- Theoretical Studies of Low-Energy Positron-Alkali Atom Scattering.- Precision Measurement of the Triplet Positronium Decay Rate in Gases.- The Brookhaven Positron-Hydrogen Scattering Experiment: Motivation and General Scope.- The Brookhaven Positron-Hydrogen Scattering Experiment: Experimental Setup.- Synthesis of Antihydrogen.- Antihydrogen:Production and Applications.- On Antihydrogen Production.- ?+ Charge Exchange, Muonium Formation and Depolarization in Gases.- Slow Muon Physics.- Contributed Papers.- The Inclusion of the Contributions to Low Energy e +H2 Scattering and Annihilation from the Lowest ?u+ and ?u Waves.- Positronium Formation in Positron-Hydrogen Scattering at Intermediate Energies.- Epithermal Positron Effects in Surface Measurements.- A Proposed Source of Atomic Hydrogen Suitable for the Measurement of Total and Partial Scattering Cross Sections.- Angular Correlation Studies of Positron and Positronium Annihilation in Gases.- Formation of Antihydrogen in Excited States in Antiproton-Positronium Collisions.- The Effect of an Electric Field on Free Positron Annihilation in Atomic and Molecular Gases.- Slow Positron Setup at the Giessen 65 MeV Linac.- Interactions between p and H at Intermediate Antiproton Energies.- Formation of Antihydrogen and Destruction of Positronium in $$/bar p$$ + Ps Collisions in the Antiproton Energy Range 2–100 keV.- Comparison of Impact-Ionisation and Charge-Transfer Cross Sections for Positron and Proton Scattering on Helium.- Measurement of the Impact Ionisation and Positronium Formation Cross Sections for Positron Scattering on Molecular Hydrogen.- Auto-Dissociating Resonant States of Positronium Molecules.- Positron-Hydrogen Resonances Associated with the n = 4 Hydrogen and n = 3 Positronium Thresholds.- Calculation of Ps Distribution from Solid Surfaces.- Elastic Scattering of Fast Positrons by Sodium and Potassium Atoms.- Excitation of Helium by Positron Impact and a Comparison with Electron Data.- Differential Cross Sections for Electron and Positron Scattering from Argon.- Ionization of Positronium by Electrons.- Positronium Formation at CondensedAtomic Semilayers of Krypton and Carbon.- Positron-Na Scattering Using CCA.- Elastic Differential Positron Scattering from Argon.- Angular Differential Cross Sections and Moderation Effects.- Positronium Formation in the Excited States (2s, 2p) in Positron-Hydrogen Atom Collisions.- Ionisation of Atomic Hydrogen by Positron Impact.- Cross Sections for .$${e^ + } + {H^ - } /to Ps/left( {n/ell } /right) + H/left( {ls} /right)$$. in Fock-Tani Representation.- Elastic Scattering of Positrons from argon.- Positronium Formation from Atomic Hydrogen.- Positron-Atomic Hydrogen Scattering at Medium to High Energies.- Low Energy Positron Transmission Measurement from Thin Single-Crystal W Foil.