Alfred Recknagel

Alfred Fritz Max Recknagel (born November 22, 1910 in Eisfeld , † December 19, 1994 in Dresden ) was a German physicist.

Life

Bronze relief in the physics building of the TU Dresden

Grave of Prof. Recknagel in the Trinitatisfriedhof in Dresden

After he had passed his Abitur in Hildburghausen in 1929 , Recknagel began studying physics at the universities in Jena and Leipzig in the same year , which he finished in 1934 with the examination for teaching at secondary schools. In 1934 Recknagel received his doctorate at the University of Leipzig under Friedrich Hund and Werner Heisenberg with the dissertation calculation of the electron terms of nitrogen molecules .

From 1934 to 1945 he worked as a physicist at the Berlin AEG Research Institute and published his first theoretical work on electron mirrors and electron emission microscopes. In 1941 the monograph electron devices appeared , which Recknagel wrote together with Ernst Brüche . At the University of Jena , Recknagel completed his habilitation two years later with the thesis The resolution of the electron microscope for self-emitters .

In 1946 Recknagel worked as a physicist at Carl Zeiss in Jena, where, among other things, he was involved in the development of an electrostatic radiographic device. In 1947 he taught electron physics at the Physics Institute of the University of Jena. On April 1, 1948, he was appointed full professor and director of the Institute for Experimental Physics (from 1969 for experimental and electron physics) at the Technical University of Dresden (from 1961 Technical University of Dresden). His retirement took place in 1975.

Recknagel died in Dresden in 1994 and was buried in the Trinity cemetery. In his honor, the physics building of the TU Dresden was named "Recknagel-Bau" on June 28, 2016.

Fonts

• 1938: About the "phase focusing" in the movement of electrons in rapidly changing electrical fields . In: Journal of Physics . Volume 108, Issue 7–8, pp. 459–482 (with Ernst Brüche ).
• 1941: Electronic devices (with Ernst Brüche)
• 1953: Experimental Physics
• 1957: Physics: vibrations and waves, thermodynamics
• 1959: electricity and magnetism
• 1962: optics
• 1980: On the energy loss of backscattered electrons

literature

• Recknagel, Alfred (Fritz Max). In: Dorit Petschel : 175 years of TU Dresden. Volume 3: The professors of the TU Dresden 1828–2003. Edited on behalf of the Society of Friends and Supporters of the TU Dresden e. V. von Reiner Pommerin , Böhlau, Cologne a. a. 2003, ISBN 3-412-02503-8 , pp. 747-748.
• Helmut Zimmer: Laudation on the 65th birthday of Prof. phil habil. Alfred Recknagel. In: Scientific journal of the TU Dresden . Volume 25, 1976, ISSN  0043-6925 , pp. 757-760.
• Horst Kant:  Recknagel, Alfred . In: Who was who in the GDR? 5th edition. Volume 2. Ch. Links, Berlin 2010, ISBN 978-3-86153-561-4 .

Individual evidence

1. ^ Technical University of Dresden (ed.): Graves of professors of the alma mater dresdensis in cemeteries in Dresden and the surrounding area . 2nd Edition. Lausitzer Druck- und Verlagshaus, 2003, p. 43.