Georgii Nikolayevich Flyorov (also spelled Flerov, rus, Гео́ргий Никола́евич Флёров, p=gʲɪˈorgʲɪj nʲɪkɐˈlajɪvʲɪtɕ ˈflʲɵrəf; 2 March 1913 – 19 November 1990) was a Soviet

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...

who is known for his discovery of

spontaneous fission Spontaneous fission (SF) is a form of radioactive decay in which a heavy atomic nucleus splits into two or more lighter nuclei. In contrast to induced fission, there is no inciting particle to trigger the decay; it is a purely probabilistic proc ...

and his important contribution towards the

crystallography Crystallography is the branch of science devoted to the study of molecular and crystalline structure and properties. The word ''crystallography'' is derived from the Ancient Greek word (; "clear ice, rock-crystal"), and (; "to write"). In J ...

and

material science A material is a substance or mixture of substances that constitutes an object. Materials can be pure or impure, living or non-living matter. Materials can be classified on the basis of their physical and chemical properties, or on their geol ...

, for which, he was honored with many awards. In addition, he is also known for his letter directed to

Joseph Stalin Joseph Vissarionovich Stalin (born Dzhugashvili; 5 March 1953) was a Soviet politician and revolutionary who led the Soviet Union from 1924 until Death and state funeral of Joseph Stalin, his death in 1953. He held power as General Secret ...

, during the midst of

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

, to start a program of nuclear weapons in the

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

. In 2012, element 114 was named flerovium after the research laboratory at the Joint Institute for Nuclear Research bearing his name.

Biography

Flyorov was born on 2 March 1913 in Rostov-on-Don in

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

. His grandfather was a priest in the

Russian Orthodox Church The Russian Orthodox Church (ROC; ;), also officially known as the Moscow Patriarchate (), is an autocephaly, autocephalous Eastern Orthodox Church, Eastern Orthodox Christian church. It has 194 dioceses inside Russia. The Primate (bishop), p ...

—his mother was

Jewish Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...

. After finishing schooling in 1929, he was trained as a mechanic and later as an electrician, first working as a technician at the Kirov Plant. In 1933–34, he was able to attend the Leningrad Polytechnic Institute (now known as the Peter the Great St. Petersburg Polytechnic University), and earned a specialist degree from the Polytechnic Institute in physics under

Abram Ioffe Abram Fedorovich Ioffe ( rus, Абра́м Фёдорович Ио́ффе, p=ɐˈbram ˈfʲɵdərəvʲɪtɕ ɪˈofɛ; – 14 October 1960) was a prominent Soviet Union, Soviet physicist. He received the USSR State Prize, Stalin Prize (1942), the ...

's group in 1939. He found employment at the Ioffe Institute (then known as LFTI) and worked under Igor Kurchatov. Initially he worked with Mikhail Rusinov in fission applications in 1939 but discovered

in 1940 with Konstantin Petrzhak in 1940. He is known for writing to

Stalin Joseph Vissarionovich Stalin (born Dzhugashvili; 5 March 1953) was a Soviet politician and revolutionary who led the Soviet Union from 1924 until Death and state funeral of Joseph Stalin, his death in 1953. He held power as General Secret ...

in April 1942 as a lieutenant in the

Soviet Air Forces The Soviet Air Forces (, VVS SSSR; literally "Military Air Forces of the Union of Soviet Socialist Republics"; initialism VVS, sometimes referred to as the "Red Air Force") were one of the air forces of the Soviet Union. The other was the Sovie ...

and pointing out the conspicuous silence within the field of

nuclear fission Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radioactiv ...

in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

, the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...

and

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

. Flyorov's urgings to "build the uranium bomb without delay" eventually led to the development of the

Soviet atomic bomb project The Soviet atomic bomb project was authorized by Joseph Stalin in the Soviet Union to develop nuclear weapons during and after World War II. Russian physicist Georgy Flyorov suspected that the Allied powers were secretly developing a " superwea ...

. In the 1970s, he claimed as his discovery two

transition metal In chemistry, a transition metal (or transition element) is a chemical element in the d-block of the periodic table (groups 3 to 12), though the elements of group 12 (and less often group 3) are sometimes excluded. The lanthanide and actinid ...

elements:

seaborgium Seaborgium is a synthetic chemical element; it has symbol Sg and atomic number 106. It is named after the American nuclear chemist Glenn T. Seaborg. As a synthetic element, it can be created in a laboratory but is not found in nature. It is als ...

and bohrium.Original Russian version
. He founded the Flyorov Laboratory of Nuclear Reactions (FLNR), one of the main laboratories of the Joint Institute for Nuclear Research in

Dubna Dubna ( rus, Дубна́, p=dʊbˈna) is a town in Moscow Oblast, Russia. It has a status of '' naukograd'' (i.e. town of science), being home to the Joint Institute for Nuclear Research, an international nuclear physics research center and o ...

in 1957, and was director there until 1989. Also during this period, he chaired the Scientific Council of the Soviet Academy of Sciences.

Honours and awards

Hero of Socialist Labour The Hero of Socialist Labour () was an Title of honor, honorific title in the Soviet Union and other Warsaw Pact countries from 1938 to 1991. It represented the highest degree of distinction in the USSR and was awarded for exceptional achievem ...

(1949) * Two Orders of Lenin (1949, 1983) *

Order of the October Revolution The Order of the October Revolution (, ''Orden Oktyabr'skoy Revolyutsii'') was instituted on 31 October 1967, in time for the 50th anniversary of the October Revolution. It was conferred upon individuals or groups for services furthering communis ...

(1973) * Order of the Red Banner of Labour, three times (1959, 1963, 1975) *

Order of the Patriotic War The Order of the Patriotic War () is a Soviet Union, Soviet military Order (decoration), decoration that was awarded to all soldiers in the Soviet armed forces, security troops, and to Partisan (military), partisans for heroic deeds in the Easte ...

, 1st class (1985) * Lenin Prize (1967) * Stalin Prize, twice (1946, 1949) * Marian Smoluchowski Medal (1974) * USSR State Prize (1975) * Honorary Citizen of

* The element flerovium (

atomic number The atomic number or nuclear charge number (symbol ''Z'') of a chemical element is the charge number of its atomic nucleus. For ordinary nuclei composed of protons and neutrons, this is equal to the proton number (''n''p) or the number of pro ...

114) named after him in 2012

References

External links

Significant Flerov DatesAnnotated bibliography of Georgy Flerov from the Alsos Digital LibraryA draft of Flerov's letter to Stalin
{{DEFAULTSORT:Flyorov, Georgy Nikolayevich Soviet Jewish physicists Soviet nuclear physicists Soviet inventors Full Members of the USSR Academy of Sciences People involved with the periodic table Heroes of Socialist Labour Recipients of the Order of Lenin Recipients of the Lenin Prize Recipients of the Stalin Prize Recipients of the USSR State Prize 1913 births 1990 deaths Burials at Novodevichy Cemetery Peter the Great St. Petersburg Polytechnic University alumni Soviet military personnel of World War II Soviet Air Force officers Russian scientists