The editors are pleased to submit to the readers the state of the art in high energy physics as it appears at the beginning of 1978. Appreciation is extended to Mrs. Helga S. Billings for her assistance with the conference and for her skillful typing of the proceedings which was done with great enthusiasm and dedication. Also, appreciation is extended to Dr. Osman Kadiro~u for his assistance with the proceedings this year. Orbis Scientiae 1978 received some support from the Department of Energy. The Editors v CONTENTS New Approach to Cosmological Theory •. ••. •. . . . . . •. . . •. ••••••. . • 1 P. A. M. Dirac 2 Spin Forces in Large-p p-p Elastic Scattering . •. •. •. . . ••. •. •. 17 A. D. Krisch L Advances in the Study of Spin Effects in Nucleon-Nucleon Scattering at Small and Intermediate Momentum Transfers . •. • 57 Homer A. Neal What Can One Learn from Very Accurate Measurements of the Lepton Magnetic Moments? •. . . . . •. •. . . . •. . •. •. ••. . . •. 127 Toichiro Kinoshita Lepton Spin Motion in Weak Magnetic Mirror Traps •. . •. . . . . . . . •. 145 G. W. Ford Electron Magnetic Moment from Geonium Spectra . •. •. ••. •••. •. . •. 159 Robert S. Van Dyck, Jr. , Paul B. Schwinberg, and Hans Dehmelt Muon Anomalous Magnetic Moment - The Last Word . •••. •. ••••. •. . . 183 Robert W. Williams Proposed Measurements of the Anomalous Magnetic Moment of the Electron and Positron . •. . . •. •••. . . . •. . . . •. . . .

The measurement of spin-polarization observables in reactions of nuclei and particles is of great utility and advantage when the effects of single-spin sub-states are to be investigated. Indeed, the unpolarized differential cross-section encompasses the averaging over the spin states of the particles, and thus loses details of the interaction process. This introductory text combines, in a single volume, course-based lecture notes on spin physics and on polarized-ion sources with the aim of providing a concise yet self-contained starting point for newcomers to the field, as well as for lecturers in search of suitable material for their courses and seminars. A significant part of the book is devoted to introducing the formal theory—a description of polarization and of nuclear reactions with polarized particles. The remainder of the text describes the physical basis of methods and devices necessary to perform experiments with polarized particles and to measure polarization and polarization effects in nuclear reactions. The book concludes with a brief review of modern applications in medicine and fusion energy research. For reasons of conciseness and of the pedagogical aims of this volume, examples are mainly taken from low-energy installations such as tandem Van de Graaff laboratories, although the emphasis of present research is shifting to medium- and high-energy nuclear physics. Consequently, this volume is restricted to describing non-relativistic processes and focuses on the energy range from astrophysical energies (a few keV) to tens of MeV. It is further restricted to polarimetry of hadronic particles.