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Ivy King was the largest pure-fission nuclear bomb ever tested by the United States. [1] The bomb was tested during the Truman administration as part of Operation Ivy.This series of tests involved the development of very powerful nuclear weapons in response to the nuclear weapons program of the Soviet Union.
The bomb was detonated on November 1, 1952, on Elugelab Island yielding 10.4 megatons, almost 500 times the yield of the bomb dropped on Nagasaki, resulting in the total vaporization of the island. Eight megatons of the yield were from fast fission of the uranium tamper, creating massive amounts of radioactive fallout.
Orange Herald fireball and subsequent mushroom cloud, film reel captured from a trailing aircraft. Orange Herald was a British nuclear weapon, tested on 31 May 1957.At the time it was reported as an H-bomb, although in fact it was a large boosted fission weapon and remains to date, the largest fission device ever detonated.
The Mark 18 nuclear bomb, also known as the SOB or Super Oralloy Bomb, was an American nuclear bomb design which was the highest yield fission bomb produced by the US. The Mark 18 had a design yield of 500 kilotons. Nuclear weapon designer Ted Taylor was the lead designer for the Mark 18.
On January 5, 2015, North Korean TV news anchors announced that they had successfully tested a miniaturized atomic bomb, about 8 km (5 mi) from the Punggye-ri nuclear site where a test was conducted in 2013. On January 6, 2016, North Korea announced that it conducted a successful test of a hydrogen bomb.
The first test, Green Granite, was a prototype fusion bomb that failed to produce equivalent yields compared to the U.S. and Soviets, achieving only approximately 300 kt (1,300 TJ). The second test Orange Herald was the modified fission bomb and produced 720 kt (3,000 TJ)—making it the largest fission explosion ever. At the time almost ...
The Tsar Bomba is the single most physically powerful device ever deployed on Earth, the most powerful nuclear bomb tested and the largest human-made explosion in history. [64] For comparison, the largest weapon ever produced by the US, the now-decommissioned B41 , had a predicted maximum yield of 25 Mt (100 PJ).
The radiation from the exploding fission primary brought the fuel in the fusion secondary to critical density and pressure, setting off thermonuclear (fusion) chain reactions, which in turn set off a tertiary fissioning of the bomb's 238 U fusion tamper and casing. Consequently, this type of bomb is also known as a "fission-fusion-fission" device.