The Nobel Prize in Physics 1981
Nicolaas Bloembergen, Arthur L. Schawlow, Kai M. Siegbahn
Kai M. Siegbahn
Born: 20 April 1918, Lund, Sweden
Died: 20 July 2007, Ängelholm, Sweden
Affiliation at the time of the award: Uppsala University, Uppsala, Sweden
Prize motivation: "for his contribution to the development of high-resolution electron spectroscopy"
Field: atomic physics