PRL Celebrates 50 Years

This Week's Milestone Letters are from 1974:
Milestone Letters: Discovery of the J/ψ

Physical Review Letters – 25 June 1979
(Volume 42, Issue 26)

•

Confirmation of the Existence of the Σ_c⁺⁺ and Λ_c⁺ Charmed Baryons and Observation of the Decay Λ_c⁺→Λπ⁺ and K̅ ⁰p
C. Baltay, D. Caroumbalis, H. French, M. Hibbs, R. Hylton, M. Kalelkar, K. Shastri, A. Vogel, A. M. Cnops, P. L. Connolly, S. A. Kahn, H. G. Kirk, M. J. Murtagh, R. B. Palmer, N. P. Samios, and M. Tanaka
pp. 1721-1724 [View Page Images , PDF (591 kB), or Buy this Article (Use Article Pack) ]

•	Interpretation of p-p Dibaryon Resonances at 2140, 2260, and 2430 MeV Malcolm H. MacGregor pp. 1724-1728 [View Page Images , PDF (838 kB), or Buy this Article (Use Article Pack) ]

•	Angular Momentum Transfer in Deeply Inelastic Collisions from Exclusive Sequential-Fission Experiments D. v. Harrach, P. Glässel, Y. Civelekoglu, R. Männer, and H. J. Specht pp. 1728-1732 [View Page Images , PDF (877 kB), or Buy this Article (Use Article Pack) ]

•	Multiplicity of K X Rays Emitted in (⁶Li,xn) Reactions H. J. Karwowski, S. E. Vigdor, W. W. Jacobs, S. Kailas, P. P. Singh, F. Soga, and W. D. Ploughe pp. 1732-1735 [View Page Images , PDF (641 kB), or Buy this Article (Use Article Pack) ]

•	Observation of Subnatural Linewidths by Two-Step Resonant Scattering in I₂ Vapor Richard P. Hackel and Shaoul Ezekiel pp. 1736-1739 [View Page Images , PDF (577 kB), or Buy this Article (Use Article Pack) ]

•	Macroscopic Quantum Fluctuations in Superfluorescence Fritz Haake, Harald King, Guntram Schröder, Joe Haus, Roy Glauber, and Fred Hopf pp. 1740-1743 [View Page Images , PDF (678 kB), or Buy this Article (Use Article Pack) ]

•	Second-Harmonic Emission at Resonance Absorption G. Auer, K. Sauer, and K. Baumgärtel pp. 1744-1746 [View Page Images , PDF (411 kB), or Buy this Article (Use Article Pack) ]

•	Inelastic Collision of Spherical Ion-Acoustic Solitons Frederic Ze, Noah Hershkowitz, Chung Chan, and Karl E. Lonngren pp. 1747-1750 [View Page Images , PDF (638 kB), or Buy this Article (Use Article Pack) ]

•	Observation of an Ion-Beam-Driven Instability in a Magnetized Plasma S. H. Gold and A. W. DeSilva pp. 1750-1753 [View Page Images , PDF (631 kB), or Buy this Article (Use Article Pack) ]

•	Interaction of Atomic Hydrogen with the Surface of Liquid ⁴He R. A. Guyer and M. D. Miller pp. 1754-1757 [View Page Images , PDF (631 kB), or Buy this Article (Use Article Pack) ]

•	Measurements of the Second-Sound Damping in Dilute ³He-⁴He Solutions Dennis S. Greywall pp. 1758-1761 [View Page Images , PDF (554 kB), or Buy this Article (Use Article Pack) ]

•	Evidence for a New State in Aluminosilicate Spin-Glasses in Very Weak Magnetic Fields Lia Krusin-Elbaum, R. Raghavan, and S. J. Williamson pp. 1762-1765 [View Page Images , PDF (730 kB), or Buy this Article (Use Article Pack) ]

•	Intrinsic-Defect Photoluminescence in Amorphous SiO₂ C. M. Gee and Marc Kastner pp. 1765-1769 [View Page Images , PDF (876 kB), or Buy this Article (Use Article Pack) ]

•	Superconductivity in Irradiated Palladium B. Stritzker pp. 1769-1773 [View Page Images , PDF (811 kB), or Buy this Article (Use Article Pack) ]

•	Electron-Spin Relaxation by Tunneling States in β-Al₂O₃: Na S. R. Kurtz and H. J. Stapleton pp. 1773-1776 [View Page Images , PDF (630 kB), or Buy this Article (Use Article Pack) ]

•	Analysis of the Anomalous Temperature-Dependent Resistivity on Potassium below 1.6 K Marilyn F. Bishop and A. W. Overhauser pp. 1776-1779 [View Page Images , PDF (669 kB), or Buy this Article (Use Article Pack) ]

•	Self-Scattering Path-Variable Formulation of High-Field, Time-Dependent, Quantum Kinetic Equations for Semiconductor Transport in the Finite-Collision-Duration Regime J. R. Barker and D. K. Ferry pp. 1779-1781 [View Page Images , PDF (482 kB), or Buy this Article (Use Article Pack) ]

•	Observation of a d-like Surface-State Band on Cu(100) using Resolved Photoemission P. Heimann, J. Hermanson, H. Miosga, and H. Neddermeyer pp. 1782-1784 [View Page Images , PDF (504 kB), or Buy this Article (Use Article Pack) ]

•	Two-Photon Absorption in Zinc-Blende Semiconductors C. R. Pidgeon, B. S. Wherrett, A. M. Johnston, J. Dempsey, and A. Miller pp. 1785-1788 [View Page Images , PDF (605 kB), or Buy this Article (Use Article Pack) ]

•	Angular Momentum of the Cosmic Background Radiation H. P. Jakobsen, Mark Kon, and I. E. Segal pp. 1788-1791 [View Page Images , PDF (538 kB), or Buy this Article (Use Article Pack) ]