Klaus Bethge

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Klaus Heinrich Wilhelm Bethge (born February 20, 1931 in Berlin ; † July 24, 2016 in Darmstadt ) was a German physicist and university professor .


Bethge studied physics at the TU Berlin . He then went to the University of Heidelberg to study with Otto Haxel and Hans Jensen . There he was in 1960 with his dissertation Umladungsmessungen of lithium - ion energy 3-10 keV doctorate. He then worked with his group on the tandem accelerator of the Max Planck Institute for Nuclear Physics in Heidelberg (until 1982). For two years he worked as a Research Associate in the Tandem Laboratory at the University of Pennsylvania . In 1967 he completed his habilitation at the University of Heidelberg with his habilitation thesis Generation of negative lithium ions for a tandem accelerator . He became known for his development of a powerful ion source for negative lithium ions.

In 1974 Bethge was appointed full professor at the University of Frankfurt am Main . For many years he was managing director of the Institute for Nuclear Physics (IKF) at the University of Frankfurt am Main. From 1975 he conducted research at the GSI's heavy ion accelerator in Darmstadt . The main focus of the work was heavy ion physics and ion beam physics for the investigation and elucidation of atomic nuclear reactions . From 1980 on, material investigations with ion beams were increasingly carried out at the Van de Graaff accelerators at the IKF. Metals , semiconductors and insulators were examined using nuclear and mass spectrometric methods.

Bethge was a member of the German Physical Society , the American Physical Society and the European Physical Society . He was in charge of the accelerator project of the German Development Service at the University of Amman . After German reunification , he was a member of the appointment commissions at the universities of Leipzig , Jena and Dresden . In 1991 he was one of the founding members of the Leibniz Institute for Surface Modification . In 1999 he retired .

Individual evidence

  1. Horst Schmidt-Böcking , Reinhard Stock , Gernot Gruber, Bernd Rauschenbach : Obituary for Klaus Bethge . In: Physics Journal . tape 15 , no. 10 , 2016, p. 43 .
  2. ^ Production of negative lithium ions in a Penning discharge Nucl. Instrum. Methods , 46: 43-4 (1967) (accessed August 26, 2019)
  3. IKF: Prof. Dr. Klaus Bethge (accessed October 11, 2016).