Walther Bothe

Walther Bothe
Walther Bothe in the 1950s
Born	(1891-01-08)8 January 1891 Oranienburg, German Empire
Died	8 February 1957(1957-02-08) (aged 66) Heidelberg, West Germany
Nationality	German
Alma mater	University of Berlin
Known for	Bothe–Geiger coincidence experiment Coincidence method Coincidence circuit
Spouse	Barbara Below[1]
Awards	Nobel Prize for Physics (1954) Max Planck Medal (1953) Pour le Mérite for Sciences and Arts (1952)
Scientific career
Fields	Physics, mathematics, chemistry
Institutions	University of Berlin University of Giessen University of Heidelberg Max Planck Institute for Medical Research
Doctoral advisor	Max Planck
Signature

Walther Wilhelm Georg Bothe (German pronunciation: [ˈvaltɐ ˈboːtə] ^ⓘ; 8 January 1891 – 8 February 1957)^[2] was a German nuclear physicist know for the development of coincidence methods to study particle physics.

He served in the military during World War I from 1914, and he was a prisoner of war of the Russians, returning to Germany in 1920. Upon his return to the laboratory, he developed and applied coincidence circuits to the study of nuclear reactions, such as the Compton effect, cosmic rays, and the wave–particle duality of radiation, for which he would receive a share of the Nobel Prize in Physics in 1954.

In 1930, he became a full professor and director of the physics department at the University of Giessen. In 1932, he became director of the Physical and Radiological Institute at the University of Heidelberg. He was driven out of this position by elements of the deutsche Physik movement. To preclude his emigration from Germany, he was appointed director of the Physics Institute of the Kaiser Wilhelm Institute for Medical Research (KWImF) in Heidelberg. There, he built the first operational cyclotron in Germany. Furthermore, he became a principal in the German nuclear energy project, also known as the Uranverein (Uranium Club), which was started in 1939 under the supervision of the Army Ordnance Office.

In 1946, in addition to his directorship of the Physics Institute at the KWImf, he was reinstated as a professor at the University of Heidelberg. From 1956 to 1957, he was a member of the Nuclear Physics Working Group in Germany.

In the year after Bothe's death, his Physics Institute at the KWImF was elevated to the status of a new institute under the Max Planck Society and it then became the Max Planck Institute for Nuclear Physics. Its main building was later named Bothe laboratory.