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Appendix B - Milestones in particle physics

Published online by Cambridge University Press:  05 June 2012

Donald H. Perkins
Donald H. Perkins
Affiliation:
University of Oxford
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Summary

1897 Discovery of electron

1900 α, β and γ radioactivity

1905 Photon identified as quantum of electromagnetic field

1911 Discovery of atomic nucleus

1912 Discovery of cosmic rays

Invention of cloud chamber

1913 Bohr model of atom

1919 Discovery of proton

1923 de Broglie wave–particle duality

1925 Introduction of electron spin

1926 Wave mechanics

1927 Uncertainty Principle

1928 Dirac wave equation

1930 Neutrino hypothesis

1931 Operation of first cyclotron and of Van der Graaff accelerator

1932 Discovery of positron

Discovery of neutron

1933 Discovery of electromagnetic showers

1934 Theory of beta decay

Discovery of Čerenkov effect

1935 Yukawa theory of nuclear forces

1936 Breit–Wigner resonance formula

1937 First evidence for mesotron (= muon)

1939 Observation of mesotron (= muon) decay

1940 Spin-statistics theorem

1945 Phase stability in accelerators (synchrotron principle)

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Introduction to High Energy Physics , pp. 379 - 385
Publisher: Cambridge University Press
Print publication year: 2000

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