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Castle Bravo was the first in a series of ... (its uncompressed annular radius), ... pipes caused a small second fireball at Station 1200 with a yield of 1 kiloton of ...
English: A simple graphic showing comparative nuclear fireball radii for a number of different tests and warheads. From largest to smallest, the diameter are: Tsar Bomba — 50 Mt — 4.6 km (2.9 mi) Castle Bravo — 15 Mt — 2.84 km (1.76 mi) W59 warhead (Minuteman missile) — 1 Mt — .96 km (0.60 mi)
Comparative fireball radii for a selection of nuclear weapons. [citation needed] Contrary to the image, which may depict the initial fireball radius, the maximum average fireball radius of Castle Bravo, a 15-megatonne yield surface burst, is 3.3 to 3.7 km (2.1 to 2.3 mi), [6] [7] and not the 1.42 km displayed in the image.
The Castle Bravo shot of 1 March 1954, at Bikini Atoll, was the first test of a deployable (solid fuel) thermonuclear weapon, and also (accidentally) [citation needed] the largest weapon ever tested by the United States (15 megatons). It was also the single largest U.S. radiological accident in connection with nuclear testing.
But as was discovered in the first test of this type of device, Castle Bravo, when lithium-7 is present, one also has some amounts of the following two net reactions: 7 Li + 1 n → 3 T + 4 He + 1 n 7 Li + 2 H → 2 4 He + 1 n + 15.123 MeV. Most lithium is 7 Li, and this gave Castle Bravo a yield 2.5 times larger than expected. [16]
The Tsar Bomba far surpassed the largest explosion the United States has ever conducted - a 15-megaton "Castle Bravo" hydrogen bomb detonated on Bikini Atoll in 1954. (Reporting by Maria Vasilyeva ...
The second series of tests in 1954 was codenamed Operation Castle. The first detonation was Castle Bravo, which tested a new design utilizing a dry-fuel thermonuclear bomb. It was detonated at dawn on March 1, 1954. Scientists miscalculated: the 15 Mt of TNT nuclear explosion far exceeded the expected yield of 4–8 Mt of TNT (6 predicted). [6]
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