The European Physical Journal H

, Volume 39, Issue 5, pp 537–542

Braking formula for electrons of relativistic speed

  • H. Bethe
Historical Document

DOI: 10.1140/epjh/e2014-50028-5

Cite this article as:
Bethe, H. EPJ H (2014) 39: 537. doi:10.1140/epjh/e2014-50028-5


From the theory of Møller [Møller, Chr. 1931. Über den Stoß zweier Teilchen unter Berücksichtigung der Retardation der Kräfte. Zeitschrift f. Phys. 70: 786–795] the energy loss of electrons with relativistic speeds passing through matter is derived. The energy loss per centimeter of distance reaches a minimum at about 96% of the speed of light and increases again at higher speeds; for electrons of several billion Volt it is about 4 million Volt per centimeter of water. A table of the theoretical energy loss for electrons and protons of various speeds is given.

Copyright information

© EDP Sciences and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • H. Bethe
    • 1
  1. 1.RomeItaly

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