Hans Kopfermann

Hans Kopfermann (26 April 1895, in Breckenheim near Wiesbaden – 28 January 1963, in Heidelberg) was a German atomic and nuclear physicist. He devoted his entire career to spectroscopic investigations, and he did pioneering work in measuring nuclear spin. During World War II, he worked on the German nuclear energy project, also known as the Uranium Club.

Kopfermann began his studies at the Friedrich-Alexander-Universität Erlangen-Nürnberg and the Friedrich-Wilhelms-Universität (today, the Humboldt-Universität zu Berlin). After World War I, he continued his studies at the Georg-August University of Göttingen under James Franck. He received his doctorate there in 1925.

After receipt of his doctorate, Kopferman went to work with Rudolf Ladenburg, who was a staff scientist at the Kaiser-Wilhelm Institut für physikalische Chemie und Elektrochemie (Kaiser Wilhelm Institute for Physical Chemistry and Electrochemistry; today, the Fritz-Haber-Institut der Max-Planck-Gesellschaft), in Berlin-Dahlem. Kopfermann investigated dispersion and stimulated emission. In 1931, he began the study of the hyperfine structure of spectral lines, which began his pioneering work on measuring nuclear spin.

In 1932, Kopfermann was a Privatdozent at the Friedrich-Wilhelms-Universität, which meant that he had completed his Habilitation. He then spent a year of research under Niels Bohr at the Institute of Theoretical Physics in Copenhagen. From 1933 to 1937, he was a senior assistant to Gustav Hertz at the Technische Hochschule Berlin (today, the Technische Universität Berlin), in Berlin – Charlottenburg.

...
Wikipedia