Helmut Liebl

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Helmut Jakob Liebl (born December 16, 1927 in Wurmannsquick ) is a German physicist who deals with ion optics and their application in mass spectrometry .

Live and act

Liebl studied physics at the Technical University of Munich with a diploma in 1953 and a doctorate in 1956. He then worked as a research assistant at the Technical University of Munich, before moving to the USA in 1959 at the Geophysics Corporation of America (GCA) in Bedford (Massachusetts) to work for Richard Herzog , a pioneer of mass spectrometry in the 1930s and secondary ion mass spectrometry (SIMS) in the late 1940s , who worked with Liebl at GCA to develop a SIMS that was funded by NASA for use in the moon landing. They presented the device in 1963, three years after the French Raimond Castaing and Georges Slodzian demonstrated another such device . In contrast to the French device, the Liebl and Herzog device had a double focus and used an ion source from Manfred von Ardenne . In the further course there was a competition with the French and the company Cameca, which took over the industrial development in France. In 1964, Liebl moved to ARL (Applied Research Laboratories) in Goleta (California) (Hasler Research Center). There he built the first Scanning Ion Microprobe Mass Spectrometer (Ion Microprobe Mass Analyzer, IMMA) with a lateral resolution of less than 2 microns. In 1968 he returned to Germany and worked in the Surface Physics department at the Max Planck Institute for Plasma Physics in Garching until he retired . Here, too, he continued to deal with SIMS. He holds 20 patents and has published around 80 scientific articles.

Fonts

  • with Herzog: Sputtering ion source for solids, J. Appl. Physics, Vol. 34, 1963, pp. 2893-2896
  • Ion microprobe mass analyzer, J. Appl. Phys., 38, 1967, 5277-5280
  • Applied Charged Particle Optics, Springer 2008

Web links

Individual evidence

  1. ↑ According to Emmanuel de Chambost: A history of Cameca, in: Peter Hawkes, Advances in Imaging and Electron Physics 167, Elsevier 2011, p. 28, he was one of Cameca's toughest opponents. After 1978 he stopped attending SIMS conferences, but continued to file patents.
  2. ↑ With a short biography and photo in the blurb
personal data
SURNAME Liebl, Helmut
ALTERNATIVE NAMES Liebl, Helmut Jakob (full name)
BRIEF DESCRIPTION German physicist
DATE OF BIRTH December 16, 1927
PLACE OF BIRTH Wurmannsquick