Igor Kurchatov

Igor Kurchatov was a Soviet nuclear physicist who directed the Soviet Union's atomic bomb project and is widely remembered as the father of the Soviet atomic bomb. Working at the Leningrad Physico-Technical Institute from the 1920s, Kurchatov studied radioactivity and helped build the Soviet Union's first cyclotron, completed in 1937, before being appointed in 1943 to lead the country's nuclear weapons program after Soviet intelligence obtained details of British and American atomic research. Under intense pressure following the American bombings of Hiroshima and Nagasaki, Kurchatov's team built the Soviet Union's first nuclear reactor and, on August 29, 1949, successfully tested the country's first plutonium implosion bomb, code named First Lightning, ending the American nuclear monopoly years earlier than most Western analysts had expected. After this test, Kurchatov grew increasingly concerned about the destructive power of the weapons he had helped build and spent much of his later career advocating for the peaceful application of nuclear technology, including civilian nuclear power. The Kurchatov Institute in Moscow, one of Russia's leading nuclear research centers, is named in his honor.