This article is about Aktinum. Einsteinium and Fermium were found in 1952 and 1953, respectively, as a by -product of the "Ivy Mike" nuclear test, the first successful experiment of the hydrogen bomb held on November 1, 1952.Uranium-238, exposed to neutron explosions, produced a heavy isotope of uranium.(Including uranium-253 and uranium-255) and β-collapse were made of Einstinium-253 and Fermium-255.A new record has been found to take the discovery of a new element and to occupy neutrons.At that time, however, it was a tension in the Cold War that occurred until 1955, so the US military was completely secret.Nevertheless, the Berkeley Research Institute thought it would be able to create Einsteinium and ferrium.So I thought about colliding neutrons in Plutonium-239, and experimented in 1954.This was also published in combination of the denial of not the first discovery.The "Ivy Mike" incident was unregistered and IUPAC was approved in 1955.For the first time, Einsteinium (less than microgram) was created by Cunningham and his colleagues in 1961, but it did not end until Fermium.
What is the year of ferrium found as a by -product of Ivy Mike Nuclear Test?
1953