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Teller-Ulam hydrogen bomb firing sequence, modified from Howard Morland, The Secret that Exploded (Random House, 1981). A Warhead before firing; primary at top, first at top. Both components are fusion-boosted fission bombs. B High-explosive fires in primary, compressing plutonium core into supercriticality and beginning a fission reaction.
[55] [56] In January 2016, North Korea claimed to have successfully tested a hydrogen bomb, [57] although only a magnitude 5.1 seismic event was detected at the time of the test, [58] a similar magnitude to the 2013 test of a 6–9 kt (25–38 TJ) atomic bomb. These seismic recordings cast doubt upon North Korea's claim that a hydrogen bomb was ...
A Eucalyptus melliodora tree at the site of Hiroshima Castle, 740 m from the hypocenter.The tree survived the atomic bombing, while the castle was destroyed. Hibakujumoku (Japanese: 被爆樹木; also called survivor tree or A-bombed tree in English) is a Japanese term for a tree that survived the atomic bombings of Hiroshima and Nagasaki in 1945.
The hydrogen bomb, which carried the force of 50 million tons of conventional explosives, was detonated in a test in October 1961. Russia releases secret footage of 1961 'Tsar Bomba' hydrogen ...
The detonation produced a crater 1.9 km (6,200 ft) in diameter and 50 m (160 ft) deep where Elugelab had once been; [9] the blast and water waves from the explosion (some waves up to 6.1 m (20 ft) high) stripped the test islands clean of vegetation, as observed by a helicopter survey within 60 minutes after the test, by which time the mushroom ...
[14] [15] The cryogenic deuterium provided the fuel for the "secondary" stage of the explosion. [9]: 43 At one end of the cylindrical Dewar flask was a TX-5 [16]: 66 regular fission bomb (not boosted [16]: 43 ). The TX-5 bomb was used to create the conditions needed to initiate the fusion reaction.
A typical hydrogen bomb has two parts: a plutonium-based fission bomb known as the primary, and a cylindrical arrangement of fusion fuels known as the secondary. The primary releases x-rays, which are trapped within the bomb casing. They heat and compress the secondary until it ignites.
In the initial microseconds after the explosion, a fireball is formed around the bomb by the massive numbers of thermal x-rays released by the explosion process. These x-rays cannot travel very far in standard atmosphere before reacting with molecules in the air , so the result is a fireball that rapidly forms within about 10 metres (33 ft) in ...