POSITRON PHYSICS

By DAVID TAYLOR

CONTENTS INTRODUCTION HISTORICAL REMARKS BASIC PROPERTIES OF THE POSITRON AND OTHER POSITRONIC SYSTEMS BASIC EXPERIMENTAL TECHNIQUES SLOW POSITRON BEAMS THE PRODUCTION OF POSITRONIUM THE PHYSICAL BASIS OF THE INTERACTIONS OF POSITRONS AND POSITRONIUM WITH ATOMS AND MOLECULES TOTAL SCATTERING CROSS SECTIONS THEORY EXPERIMENTAL TECHNIQUES GENERAL DISCUSSION OF SYSTEMATIC ERRORS RESULTS AND DISCUSSION – ATOMS RESULTS AND DISCUSSION – MOLECULES PARTITIONING OF THE TOTAL CROSS SECTION ELASTIC SCATTERING THRESHOLD E?ECTS ANGLE-RESOLVED ELASTIC SCATTERING POSITRONIUM FORMATION RESULTS OTHER PROCESSES INVOLVING POSITRONIUM FORMATION COMPARISONS WITH PROTONS DI?ERENTIAL CROSS SECTIONS DENSE GASES EXCITATION AND IONIZATION EXCITATION IONIZATION – THEORETICAL CONSIDERATIONS IONIZATION – EXPERIMENTAL TECHNIQUES FOR INTEGRATED CROSS SECTIONS SINGLE IONIZATION – RESULTS MULTIPLE IONIZATION INNER SHELL IONIZATION POSITRON ANNIHILATION INTRODUCTION AND THEORETICAL CONSIDERATIONS EXPERIMENTAL DETAILS RESULTS – POSITRON ANNIHILATION POSITRON DRIFT POSITRONIUM AND ITS INTERACTIONS FUNDAMENTAL STUDIES WITH THE POSITRONIUM ATOM THEORETICAL ASPECTS OF ANNIHILATION AND SCATTERING IN GASES EXPERIMENTAL STUDIES OF POSITRONIUM ANNIHILATION IN GASES SLOWING DOWN BOUND STATES INVOLVING POSITRONIUM STUDIES WITH POSITRONIUM BEAMS EXOTIC SPECIES INVOLVING POSITRONS THE POSITRONIUM NEGATIVE ION SYSTEMS CONTAINING MORE THAN ONE POSITRON ANTIHYDROGEN REFERENCES