Cloud Chamber Photographs of the Cosmic Radiation

AcknowledgmentsForeword Authors’ PrefaceSection I: Technical Features Of Operation Diffused Cloud-Chamber Tracks Preferential Sign Condensation Ionization in Hydrogen Relationship in Time and Space of Counter-Controlled Tracks Technical Features of Track Formation Near Metal Plates Distortion At Edge of Piston Turbulent Distortion Chamber Contamination By Liquid Spray Techniques of Internal Control of The Cloud-Chamber Examples of Photographs in A Long Rectangular Cloud ChamberSection II: Electrons and Cascade Showers The First Recognizable Cosmic Ray Particles in Cloud Chamber Photographs The Positive Electron Early Photographs of Cascade Showers Cascade Processes with Artificially Produced Electrons and Photons Cascade Development of Small Showers Transition Effects of Showers in Metal Plates A Localized Cascade Extensive Showers Nuclear Interaction Associated with An Extensive Shower Large Shower of Penetrating and Cascade Particles High Energy Cascade with Which Is Associated An Evaporation Star in the Gas of the Chamber Elastic Collisions by Fast Particles (Formation of “ Knock-On” Electrons)Section III: Slow µ-Mesons and Their Decay Early Photographs of Mesons Examples of µ-Meson Decay Loss of Momentum by A Slow Meson Traversing A Metal Plate The Determination of the Mass of A Meson by Elastic Collision with An Electron Determination of the Masses of Cosmic-Ray Particles From Momentum and Range Energy Measurements On Decay ElectronsSection IV: Nuclear Disintegrations and Interaction of Secondary Particles Early Examples of Nuclear Disintegrations Caused by Cosmic Ray Particles Nuclear Disintegration in A Multiple Chamber Nuclear Interactions in Carbon and Lead Nuclear Disintegrations in A Thick Lead Plate Examples of the Interaction of Penetrating Shower Particles Nuclear Disintegrations with Electronic Elements Penetrating Shower in A High Pressure Cloud Chamber Capture of A Meson in Argon Stars in the Gas of the Cloud Chamber, Associated with Nucleonic Particles Products of An Energetic Star in the Gas of the Cloud Chamber Disintegrations Produced by Artificially-Accelerated NucleonsSection V: V-Particles The First Photographs of V-Particle Decay Fast Neutral V-Particles Slow Neutral V-Particles Neutral V-Decays in Which One Secondary Can Be Identified The Origin of Neutral V-Particles Fast Charged V-Particle Slow Charged V-Particle Nuclear Encounters in Which Particles Are Identified Which Appear To Have Masses of the Order of 1000mSection VI A Heavy Cosmic Ray Primary At 95,000 Altitude