Philip Burton Moon
Moon in Los Alamos in 1964
Born	17 May 1907 Lewisham, London, England
Died	9 October 1994(1994-10-09) (aged 87)
Alma mater	Sidney Sussex College Cavendish Laboratory
Known for	Tube Alloys Manhattan Project Gamma ray fluorescence development of atomic bomb 'Oliphant's satellite'
Awards	Hughes Medal (1991) Fellow of the Royal Society[1]
Scientific career
Fields	Nuclear physics
Institutions	University of Cambridge Imperial College, London Birmingham University Cavendish Laboratory University of Birmingham
Doctoral advisor	Ernest Rutherford
Other academic advisors	Sir Mark Oliphant
Doctoral students	Noor Muhammad Butt

Philip Burton Moon FRS^[1] (17 May 1907 – 9 October 1994) was a British nuclear physicist. He is most remembered for his research work in atomic physics and nuclear physics. He is one of the British scientists who participated in the United States' Manhattan Project, Britain's Tube Alloys, and was involved in nuclear weapon development. Moon made outstanding and original experimental contributions which stimulated the development of whole fields of research involving neutrons, gamma rays and novel methods of studying chemical reactions ('Mechanically propelled molecular beams: techniques and opportunities', Moon, P.B. Ralls, M.P., Proceedings of the Royal Society A, 423, 361 371, 1989).

Philip Burton Moon was born in 1907, attended Leyton Sixth Form College, and in 1925 entered Sidney Sussex College, Cambridge. He became a research student in the Cavendish Laboratory under Ernest Rutherford. From 1928 to 1931 he worked with Mark Oliphant on the collision of atoms with solids. Rutherford called him "Oliphant's satellite" and that influence remained with him for decades.

He worked at Cavendish Laboratory in the mid-1930s, where he shared a room with Australian physicist Mark Oliphant. Both later joined the University of Birmingham; Moon in 1938.

During World War II Moon was part of the MAUD Committee that confirmed the feasibility of an atomic bomb and then became part of the British delegation to the Manhattan Project, where amongst other things he did work on designing instrumentation for measuring the eventual bomb test.

His wife, Winifred Moon, was a staff worker at Los Alamos during the Manhattan Project.^[2]

• 
  Philip Moon's Los Alamos badge
• 
  Winifred Moon's Los Alamos badge

After the war he was made Poynting Professor of Physics at Birmingham in 1946, succeeding Oliphant but receiving the appointment only after the first choice (Cecil Powell) had been rejected at the last minute for being a communist. He held the position until 1973.

In 1950 Moon was the first person to detect gamma ray fluorescence; however his results were not considered statistically significant enough and it would be several years before they were proven.

Moon was invited to become the honorary life president of the Poynting Physical Society, at the University of Birmingham, in 1975.^[3]

In 1991, Moon was the recipient of the Hughes Medal from the Royal Society.

His papers are held at the University of Birmingham Special Collections.

• P. B. Moon