Hans Kleinpoppen
Hans Kleinpoppen (born September 30, 1928 in Duisburg ; † February 12, 2016 in Berlin ) was a German physicist and university professor .
Life
Kleinpoppen studied physics at the University of Gießen with a diploma in 1955. His first publication together with Wilhelm Hanle appeared in 1958. He then moved to the University of Heidelberg to Hans Kopfermann and finally to the University of Tübingen to Hubert Krüger, where he did his dissertation on measuring the Lamb displacement of the 32S1 / 2 state with respect to the 32P1 / 2 state in the hydrogen atom 1961 Ph.D. was. In 1967 he completed his habilitation there with his habilitation thesis Elastic and inelastic collision processes between electrons and hydrogen atoms . With his measurements of the threshold polarization of atomic fluorescence radiation after electron impact excitation , he confirmed the Percival - Seaton theory.
After his habilitation, Kleinpoppen followed calls to the Joint Institute for Laboratory Astrophysics at the University of Colorado at Boulder and then to Columbia University in New York City , where he carried out scattering experiments with electrons on polarized sodium . This gave him access to the scatter amplitudes and relative scatter phases.
In 1968 he accepted a position at the University of Stirling , which set up a center for atomic physics at the instigation of Sir Harrie Massey .
Kleinpoppen's precise measurements allowed conclusions to be drawn about the Einstein-Podolsky-Rosen paradox and the violation of Bell's inequality . The investigation of the electron impact excitation of free atoms led to the cooperation with Hans Lutz and Rainer Hippler at the University of Bielefeld . The investigation of photoionization in cooperation with the Daresbury Laboratory resulted in a close collaboration with Uwe Becker at the Fritz Haber Institute of the Max Planck Society , so that Kleinpopper settled in Berlin in 1991 as permanent research senior guest of the institute .
Kleinpoppen became a Fellow of the Royal Society of Edinburgh in 1987 , and he was a member of the Scottish Malt-Whiskey Society of Edinburgh .
Web links
- Literature by and about Hans Kleinpoppen in the catalog of the German National Library
- In Memory of Hans Kleinpoppen
Individual evidence
- ↑ Bernd Lohmann, Karl Blum, Burkhard Langer, Heinz-Jürgen Beyer, Jim F. Williams: In memory of Hans Kleinpoppen . In: Physics Journal . tape 15 , no. 6 , 2016, p. 49 .
| personal data | |
|---|---|
| SURNAME | Kleinpoppen, Hans |
| BRIEF DESCRIPTION | German physicist and university professor |
| DATE OF BIRTH | September 30, 1928 |
| PLACE OF BIRTH | Duisburg |
| DATE OF DEATH | February 12, 2016 |
| Place of death | Berlin |