Kai Siegbahn
Kai Manne Börje Siegbahn ( born April 20, 1918 in Lund, † July 20, 2007 in Ängelholm ) was a Swedish physicist and Nobel laureate.
Life
Kai Siegbahn was born as the second son of the physics Nobel laureate Manne Siegbahn and his wife Karin Högbom. After attending high school, he studied from 1936 to 1942 physics, mathematics and chemistry at Uppsala University and received his doctorate in 1944 in Stockholm. From 1942 to 1951 he worked at the Nobel Institute of Physics. In 1951 he became professor of physics at the Royal Institute of Technology Stockholm. He moved in 1954 to the Chair of the University of Uppsala, already his father held until 1937. Siegbahn was a member of many associations, including the Royal Swedish Academy of Sciences and President of the International Union of Pure and Applied Physics ( IUPAP ).
He married on May 23, 1944 Anna Brita Rhedin and had three children, Per ( b. 1945 ), Hans ( * 1947, also a professor of Physics in Uppsala ) and Nils (* 1953).
Work
Siegbahn worked in the field of atomic and molecular physics, nuclear physics, plasma physics and electron optics.
The end of 1950 developed until early 1960 Siegbahn and others from the photoelectric effect by then known significant measurement method. The ultimate amount of the unit was to develop an electron spectrometer with hitherto unachieved precision that allowed the electrons induced by X-rays from a material assigned to their place of origin ( type of atom and shell ). The result of measurement is a chemical analysis of the composition of the tested material, from which the name ESCA ( electron spectroscopy for chemical analysis engl. ) is derived. For this work he was awarded the 1981 Nobel Prize in Physics " for his contribution to the development of high-resolution electron spectroscopy ".