Cosmic Rays and Mesotrons
Originally published in 1939, this book provided readers with a concise explanation of contemporary developments in the understanding of cosmic rays. During the two years preceding publication, the application of quantum theory to cosmic rays made it possible to give a connected account of a large part of the phenomena. The theory of radiation from a moving electron provided a satisfactory account of the behaviour of the less penetrating cosmic rays, and it became clear that the more penetrating cosmic rays could not be explained in terms of electrons, but required a new particle to account for them. The text is divided into two broad sections: the first chapters are devoted to the experimental facts of cosmic rays; the later to their explanation in terms of the properties predicted by quantum theory for moving charged particles.
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The Absorption of the Rays
The Experimental Characteristics
The Application of the Theory
The Penetrating Component
Heavy Secondary Particles in
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absorbed altitude atomic nucleus atomic number Auger Bhabha and Heitler Blackett Bowen calculated chamber photographs charged particles cloud chamber coincidence collision loss considerable Corson and Brode cosmic particles cosmic radiation cosmic-ray intensity counter system curvature depth different latitudes dipole disintegration earth earth's magnetic field electrometer electron-volts energy loss energy range energy spectrum equation experimental evidence experiments frequency Geiger counters give rise hard rays heavy high energy incident particles increase ionisation chamber ionising particles isotropic latitude layers lead light quantum maximum Mean free path mesotrons Millikan and Neher neutrons nuclear nucleus number of electrons number of particles number of rays number of tracks observed obtained pair production particles of mass particles with energies penetrating particles photographic emulsions Phys Physik probability Proc produced protons quanta quantum theory radiation loss Random expansion sea level shows soft component specific ionisation spurious bursts theoretical thickness total energy velocity vertical Yukawa