Hans Mahl

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Hans Mahl (born July 17, 1909 in Münchsmünster , † November 25, 1988 in Oberkochen ) was a German physicist and specialist in electron microscopy .

Life

Hans Mahl was born in Münchsmünster in Upper Bavaria in July 1909. From 1930 to 1934 he studied physics at the Technical Universities of Munich , Danzig and Berlin . He then came to the AEG Research Institute in Berlin-Reinickendorf as a research assistant . He worked in Ernst Brüche's physics department in the fields of electron microscopy and emissions research. In 1937 he was awarded a Dr.-Ing. PhD. His dissertation was electron-optical cathode imaging in a gas discharge . Mahl belonged to the AEG research institute until it was occupied by Russian troops in the spring of 1945.

In 1939, together with Hans Boersch , he succeeded in realizing the first laboratory implementation of the first X-ray "super microscope" (as the electron microscope was called at the time). In 1940 they both presented the first electrostatic super microscope at the Robert Koch Institute in Berlin.

In 1941 he and six other pioneers of electron microscopy received the Silver Leibniz Medal of the Prussian Academy of Sciences for his services.

Mahl was one of the first to use the electron microscope in metallurgy, colloid chemistry, botany, bacteriology and medicine. The manuscript, which was completed in December 1944, was not published until 1951 as a monograph "Electron Microscopy" (together with Erich Goelz).

After the Second World War, Mahl worked from 1947 to 1953 at the South German Laboratory (SDL) in Mosbach , which Ernst Brüche initially founded and headed with the support of AEG. The SDL manufactured the first electron microscope with electrostatic lenses with the designation EM8-2, which was sold under the trademark AEG-Zeiss. After AEG left the group of companies in 1953 and Zeiss relocated production to Oberkochen, Mahl became head of the electron microscopy and electron optics department at Carl Zeiss for many years. He held this position until his retirement in 1973.

Hans Mahl died in Oberkochen at the age of 80.

Honors

Publications

Hans Mahl has presented numerous publications on electron microscopy.

  • 1938: Electron-optical cathode imaging in a gas discharge, dissertation, Leipzig
  • 1951: Electron microscopy (together with Erich Goelz), Leipzig.

literature

  • Ernst Brüche: The change in surface imaging with electrons. Dr. Hans Mahl on his 60th birthday, in: Physikalische Blätter, 1969, pp. 310–315.
  • RO Partsch: Hans Mahl in remembrance, communications German Society for Electron Microscopy, December 1988.
  • Detlef Lorenz : The AEG Research Institute in Berlin-Reinickendorf, Berlin 2004.