Manne Siegbahn
Karl Manne Georg Siegbahn ( born December 3, 1886 in Örebro, Sweden, † September 26, 1978 in Stockholm) was a Swedish physicist and Nobel laureate.
Life
Manne Siegbahn was born on 3 December 1886 as a son of the station master of the Swedish railway in Örebro Nils Reinhold Georg Siegbahn and his wife Emma Sofia Mathilda Zetterberg. He went to the University of Lund in 1906 and graduated in 1911 with a doctorate on magnetic field measurement is made. After he had worked from 1907 to 1911 as an assistant to Professor Johannes Rydberg, he was post-doctoral lecturer and assistant professor in 1915. After the death Rydbergs 1919 he was appointed professor and took over his chair. In 1923 Siegbahn at Uppsala University and in 1937 was appointed Research Professor of the Royal Swedish Academy of Sciences. Between 1938 and 1947 he was President of the International Union of Pure and Applied Physics ( IUPAP ).
Manne Siegbahn married Karin Högbom 1914 and had two sons. Bo ( born 1915 ) went into the diplomatic service and was, among others, Ambassador to Morocco, Kai ( 1918-2007 ), like his father, physicist, was in 1981 also received the Nobel Prize.
Work
After Siegbahn had occupied from 1908 to 1912 with the problems of electricity and magnetism, he turned his interest to in the aftermath of the X-ray spectroscopy. His improvements in structure and methodology of the experiments led to a significant increase in accuracy and together with the at the same time developed quantum mechanics to a complete understanding of the shell structure of atoms. He summarized his findings in the 1923 book published spectroscopy of X-rays together, a classic of scientific literature. He was awarded the 1924 Nobel Prize in Physics "for his discoveries and research röntgenspektroskopischen ".
After his move to the Academy he taught their activities on core physics and initiated the construction of a cyclotron to accelerate deuterons, a high voltage generator, several new types of β - spectrometer and an electron microscope. With this equipment, the Institute played a leading role in the study of the atomic nucleus and the radioactive radiation processes.
Awards
1924 Siegbahn was awarded the Nobel Prize for Physics. In 1934 he was awarded the Hughes Medal, 1940, the Rumford Medal of the Royal Society, in which he was elected in 1954 as " Foreign Member ". In 1948 he was awarded the Medal of the Duddell Physical Society of London.