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The Positive Electron (Positron)

  • Mario Bertolotti
Chapter
Part of the Astronomers' Universe book series (ASTRONOM)

Abstract

The year 1932 is usually considered the annus mirabilis of nuclear physics. In that year, in Cambridge, the neutron was discovered by J. Chadwick [1] by bombarding beryllium and boron with the alpha particles from polonium; in the USA, the positive electron was discovered by Anderson in cosmic rays; and the heavy hydrogen (the deuterium or hydrogen of atomic weight 2: whose nucleus is called deuteron) was found by H. Urey. Also in the USA, J. Cockcroft and E. Walton completed their particle accelerator; E.O. Lawrence and S.M. Livingstone built the cyclotron. In Italy, E. Fermi started to elaborate his theory on beta rays that was published the following year.

Keywords

Nobel Prize Beta Decay Nuclear Emulsion Dirac Theory Cloud Chamber 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Dipartimento di Scienze di Base e Applicate per l’Ingegneria (SBAI)University of Roma “La Sapienza”RomeItaly

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