Atomic Masses and Fundamental Constants 4, 1972 Proceedings of the Fourth International Conference on Atomic Masses and Fundamental Constants held at Teddington England September 1971

The Conference on Nuclear Masses and their Determination which was held at the Max Planck I nstitute in Mainz from 10 to 12 July 1956 resulted in the formation by the International Union of Pure and Applied Physics of a Commission on Atomic Masses and Related Constants. Under the auspices of this Commission conferences covering these subjects were held in Hamilton, Ontario (12-16 September, 1960), in Vienna (15-19 July 1963) and in Winnipeg (28 August-1 September 1967). After the last of these conferences the Commission felt that the position regarding nuclear masses was reasonably good and that as a consequence the fundamental constants should get more emphasis in future conferences. For this reason they were very pleased to accept an offer from the National Physical Laboratory to accept the main burden of organizing the Fourth International Conference on Atomic Masses and Fundamental Constants. An Organizing Committee was appointed with the members: J. H. Sanders, Chairman B. W. Petley, Secretary A. Horsfield, Treasurer P. Dean A. H. Wapstra. They were assisted by a Program Committee consisting of: A. H. Wapstra, Chairman E. R. Cohen A. Horsfield W. H. Johnson, Jr. J. H. Sanders J. Terrien.

1 Particle Energies.- New Alpha Energy Standards.- Influence of Atomic Effects on Nuclear Reaction Energies.- Gamma Ray Energy vs. Particle Energy Measurements.- Masses of Light Nuclei Far from Stability.- Energy Determinations in Medium and Heavy Nuclei.- Mass Measurements of Neutron Excessive Nuclei by the (11B, 8B) Reaction.- Influence of Straggling Effects on the Accurate Measurement of Nuclear Reaction Energies.- 2 Beta and Gamma Energies.- Improvements in the Determination of ?-Spectra End-Point Energies.- Decay Energies of Far Unstable Nuclei.- Accurate Fermi Beta Decay Measurements and the Magnitude of the Weak Interaction Vector Coupling Constant.- Gamma-Ray Energies Measured with Ge(Li) Spectrometer.- Measurement of (n,?)—Lines with A High-Resolution Dumond Type Diffractometer.- Capture Reaction Q-Values with Sub-keV Accuracy.- 3 Mass Spectroscopy.- Recent Determinations of Atomic Mass Differences at the University of Manitoba.- Recent Determination of the Atomic Masses of H, D, 35Cl and 37Cl at Osaka University.- Recent Precision Mass Measurements at Princeton.- Recent Minnesota Mass Results.- On-Line Mass Spectrometric Analysis of Far Unstable Light Nuclei Produced in High Energy Nuclear Reactions. Present Status and the Prospect of Direct Mass Measurements.- Image Aberrations of Double Focusing Mass Spectrometers.- Fast On-Line Analysis of Fission Products and the. Products of Heavy Ion Reactions.- Measurements of Atom Masses in the Region from Titanium to Iron.- 4 Coulomb Energies.- Coulomb Energies and Nuclear Shapes.- Masses of 36K 80, 82Rb from Thresholds for (p,n) Reactions and Coulomb Energy Systematics Near A = 36.- 5 Mass Formulae and Mass Calculations.- Shell Model Masses and Nuclear Structure.- A Deformable Mass Formula and Fisson Data.- Mass Formula for Low Charge Atomic Nuclei.- Is there a Relation Between the Nuclear Binding Energy and the Parameters of the Variable Moment of the Inertia Model?.- Mass Extrapolation and Mass Formulae.- Problems Connected with Calculations of Atomic Masses from Experimental Data.- The 1971 Atomic Mass Evaluation.- 6 Velocity of Light.- Progress with a Determination of the Speed of Light: Introduction.- Progress with a Determination of the Speed of Light I. Far Infra-Red Frequency Measurements and Two-Laser Mixing.- Progress with a Determination of the Speed of Light Il. Techniques for High-Accuracy Frequency Measurement in the Far Infra-Red.- Progress with a Determination of the Speed of Light Ill. Up-Conversion of Carbon Dioxide Laser Radiation as a Means of Measuring Visible Laser Frequencies.- Determination of the Velocity of Light at the Kharkov Institute of Metrology.- The Constancy of the Velocity of Light and Prospects for a Unified Standardization of Time, Frequency and Length.- 7 Wavelength Comparisons.- Intercomparison of Micrometer, Nanometer and Picometer Wavelengths.- Longueur d’Onde du Laser Asservi sur le Methane Rapportée à la Longueur d’Onde Etalon de la Definition du Metre.- 8 Fine Structure Constant.- Review of Spectroscopic Data for Determining The Fine Structure Constant.- Muonium HFS Splitting as a Source of Alpha.- Electron Spectroscopy and the Fine Structure Constant.- 9 2e/h.- A Comparison of 2e/h Determinations at NSL Using Point-Contact and Thin-Film Josephson Junctions.- Recent Results of the e/h-measurement at PTB.- Recent NPL Work on e/h.- Measurements of 2e/h via the AC Josephson Effect.- 10 Rydberg Constant.- Results and Possibilities in the Determination of the Rydberg Constant.- A New Measurement of the Rydberg.- Determination of the Rydberg Constant from the He II n = 3–4 (4686A) Line Complex.- Excitation-Dependent Characteristics of H and He II Lines Used In Determining The Rydberg Constant.- 11 Magnetic Moments.- Recent NPL Work on ?p/?N.- New Determination of the Magnetic Moment of Proton in the Units of Nuclear Magneton.- Gyromagnetic Ratio of the Proton: Progress with the NPL weak-field apparatus.- A MICS for ?’p Determination.- Determination of ?’p at the National Bureau of Standards.- The g-Factor Anomalies of the Electron and Position.- Precise Measurement of the Anomalous Magnetic Moment of the Muon.- 12 Miscellaneous Constants.- Lattice Spacing Measurements And Avogadro’s Number.- Determination of the Faraday By Means of the Iodine Coulometer.- The Gravitational Constant G.- A Proposal for a New Determination of the Gas Constant.- Volume normal moléculaire, Vo, des gaz à l’état idéal.- 13 Evaluation.- A Reevaluation of the Fundamental Physical Constants.- 14 Conference Summary.- AMCO-4 Conference Summary.