Siegfried Flügge

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Siegfried Flügge, in London in 1934

Siegfried Flügge (born March 16, 1912 in Dresden , † December 15, 1997 in Hinterzarten ) was a German physicist.

Flügge studied in Dresden and Göttingen , where he received his doctorate from Max Born in 1933 with a thesis on the influence of neutrons on the internal structure of stars . Fledge was then an assistant in Frankfurt at Erwin Madelung , in Leipzig at Werner Heisenberg and Friedrich Hund and the Kaiser Wilhelm Institute for Chemistry in Berlin-Dahlem with Otto Hahn and Lise Meitner . In 1939 he pointed out in the influential publication Can the energy content of atomic nuclei be made technically usable? in the “Natural Sciences” (Volume 27, 1939, pp. 402-410) on the technical feasibility of nuclear reactors and atomic bombs . Among other things, he illustrated the energy released during nuclear fission by the fact that the energy released from the complete fission of 1 cubic meter of uranium dioxide can lift 1 cubic kilometer of water 27 km high.

During the war he worked on the German nuclear energy project . After settling in 1938 at the Technical University of Munich with a thesis on the cross sections for reactions between very light atomic nuclei habilitation had been there and in the winter semester 1940 Theoretical Physics was reading, he became in 1940 a lecturer at the University of Berlin . In 1944 he became an associate professor for theoretical physics in Königsberg and in 1945 in Göttingen . From 1947 to 1961 he was a full professor in Marburg . In 1949/50 he was visiting professor at the University of Wisconsin – Madison and in 1953 at the Carnegie Institute of Technology in Pittsburgh . In 1961 he became a professor in Freiburg im Breisgau .

As director of the Institute for the Structure of Matter at the University of Marburg , he distanced himself from the Göttingen Declaration in a letter to the editor on June 1, 1957 in the Frankfurter Allgemeine Zeitung . Only MPs and not physicists as experts should decide on the use of nuclear weapons.

Flügge researched in the fields of theoretical nuclear physics and quantum mechanics , in particular the meson theory of nuclear forces and the scattering of particles on nuclei. His practical textbook Calculation Methods of Quantum Mechanics published by Springer Verlag (first in 1947, with the help of his assistant at the time, Hans Marschall ) is well known.

Since 1955 he was editor of the multi-volume (54 volumes), written by international authors, handbook for physics .

He is the brother of the engineer and mechanics professor at Stanford University Wilhelm Flügge .

Memberships and honors

Web links

Individual evidence

  1. reprinted in Wohlfahrt (ed.) "40 Years of Nuclear Splitting", Wissenschaftliche Buchgesellschaft 1979. A similar article by Flügge from the Deutsche Allgemeine Zeitung of August 15, 1939 is in a commented u. annotated engl. Translated in Klaus Hentschel (Ed.): Physics and National Socialism. an Anthology of Primary Sources , Basel: Birkhäuser 1996, pp. 197-206.
  2. In doing so, he assumed an energy release of 180 MeV per fission, calculated from the difference in mass between the uranium nucleus and the daughter nuclei formed during the fission, according to Flügge, Gottfried von Droste Energetic considerations on the formation of barium during neutron irradiation of uranium , Zeitschrift für Physikalische Chemie B, Vol. 4, 1939, pp. 274-280