December 9, 1911|
Saint Petersburg, Russian Empire
|Died||October 21, 1999
London, United Kingdom
Trinity College, Cambridge
Berkeley Radiation Laboratory
University of Edinburgh
|Alma mater||University of Göttingen
University of Zurich
Imperial College London
|Doctoral advisor||Wolfgang Pauli
|Doctoral students||Abdus Salam
Paul Taunton Matthews
John Stephen Roy Chisholm
|Known for||British nuclear programme
|Notable awards||Hughes Medal (1966), FRS|
Nicholas Kemmer, FRS (7 December 1911 – 21 October 1998), was a Russian-born British nuclear physicist who played an integral and leading edge role in United Kingdom's nuclear programme, and was known as a mentor of Abdus Salam – a Nobel laureate in physics.
Early life 
Born in Saint Petersburg, his family moved to Germany in 1922, where he was educated at Bismarckschule Hanover and then at the University of Göttingen. He received his doctorate in nuclear physics at the University of Zurich and worked as an assistant to Wolfgang Pauli, who had to give strong arguments in 1936, before being allowed to employ a non-Swiss national. Later on, Kemmer moved to the Beit Fellowship at Imperial College London.
British Nuclear development 
He moved to Trinity College, Cambridge in 1940 to work on Tube Alloys, the wartime atomic energy project. In 1940, when Egon Bretscher and Norman Feather showed that a slow neutron reactor fuelled with uranium would in theory produce substantial amounts of plutonium-239 as a by-product, Kemmer (who was lodging at the Bretschers') proposed the names Neptunium for the new element 93 and Plutonium for 94 by analogy with the outer planets Neptune and Pluto beyond Uranus (uranium being element 92). The Americans Edwin M. McMillan and Philip Abelson at the Berkeley Radiation Laboratory, who had made the same discovery, fortuitously suggested the same names.
He spent 1944–1946 in Canada. At the University of Edinburgh from 1953 to 1979, he was Tait Professor of Mathematical Physics, creating the Tait Institute of Mathematical Physics in 1955. He was elected a Fellow of the Royal Society in 1956 and won its Hughes Medal in 1966. Nicholas Kemmer was also a mentor and a teacher of the only Pakistani Nobel laureate, Dr. Abdus Salam. Kemmer is credited to trained and work with Salam in Neutron scattering by using relativity equations. Salam later passed his research work to Pakistani physics students who went on to contribute in this field.
Work and legacy 
Duffin–Kemmer–Pitau equation 
The Duffin–Kemmer–Pitau equation (DKP equation, also called Duffin–Kemmer equation or Kemmer equation) plays a role in the description of the standard model of particles, together with the Yang-Mills field. The Duffin–Kemmer–Pitau equation is closely linked to the Proca equation and the Klein–Gordon equation. The DKP equation suffers the same drawback as the Klein–Gordon equation in that it calls for negative probabilities. The equation involves matrices which obey the Duffin–Kemmer–Petiau algebra. The work leading to the DKP equation, culminating in Kemmer's article, has been quoted as "the first attempt at writing down a satisfactory relativistic theory of elementary particles beyond the electron", and these equations have later been brought in unified form with the Dirac equation by Homi J. Bhabha.
- Dyson, F. (2011). "Nicholas Kemmer. 7 December 1911 -- 21 October 1998". Biographical Memoirs of Fellows of the Royal Society. doi:10.1098/rsbm.2011.0008.
- Charles P. Enz, Beat Glaus, Gerhard Oberkofler (eds.): Wolfgang Pauli und sein Wirken an der ETH Zürich, vdh Hochschulverlag ETHZ Zürich, 1997, ISBN 3-7281-2317-X, p. 62 (in German language)
- Sergey Kruglov: Symmetry and electromagnetic interaction of fields with multi-spin. A Volume in Contemporary Fundamental Physics, ISBN 1-56072-880-9, 2000, p. 26
- Anton Z. Capri: Relativistic quantum mechanics and introduction to quantum field theory, World Scientific, 2002, ISBN 981-238-136-8, p. 25
- N. Kemmer: The particle aspect of meson theory, Proceedings of the Royal Society A, 10. November 1939, vol. 173, no. 952, pp. 91-116, doi:10.1098/rspa.1939.0131
- Animesh Datta: High-spin field theories and relativistic quantum mechanics of bosons, In Emerson D. Seifer (ed.): Bosons, ferromagnetism and crystal growth research, pp. 119–150, Nova Science Publishers, 2006, ISBN 978-1-60021-367-0, p. 122