Tritium is radioactive, but deuterium is not.On July 16, 1945, in the New Mexico desert, the United States detonated the world’s first nuclear weapons test explosion. But it can take weeks for the gases to leak out and be detected.Īn earlier of version incorrectly described both deuterium and tritium as radioactive. Those traces may tell if this test was really a hydrogen bomb, or perhaps something less than a full-scale thermonuclear device. They will also look for clues from traces of nuclear gases that could float into the atmosphere. It could also enable North Korea to enhance the threat from its limited stocks of enriched uranium.Īnalysts who advise governments on nuclear weapons will study the shock waves from the blast measured by monitoring stations. If the North has the capability to build a hydrogen bomb, it could open the way to making warheads that pack much more destructive power in a smaller space.
The underground blast, which caused tremors felt in South Korea and China, was the first by the North to surpass the destructive power of the bombs dropped on Hiroshima and Nagasaki. North Korea claimed that it successfully staged a hydrogen bomb test in January 2016, but experts were skeptical. What would a successful hydrogen test mean? Britain, China, France and Russia have also created hydrogen bombs. The United States tested a hydrogen bomb at Bikini Atoll in 1954 that was over 1,000 times more powerful than the atomic bomb dropped on Hiroshima in 1945.
HYDROGEN BOMB VS ATOMIC BOMB FREE
The swarms of neutrons set free can ramp up the explosive chain reaction of a uranium layer wrapped around it, creating a blast far more devastating than uranium fission alone. When these relatively light atoms join together, they unleash neutrons in a wave of destructive energy.Ī hydrogen weapon uses an initial nuclear fission explosion to create a tremendous pulse that compresses and fuses small amounts of deuterium and tritium, kinds of hydrogen, near the heart of the bomb. That stage is fusion: mashing hydrogen atoms together in the same process that fuels the sun.
The first atomic weapons, like those dropped by the United States on the Japanese cities of Hiroshima and Nagasaki in World War II, did that with fission: splitting unstable uranium or plutonium atoms so that their subatomic neutrons fly free, smash up more atoms and create a devastating blast.Ī hydrogen bomb, also called a thermonuclear bomb or an H-bomb, uses a second stage of reactions to magnify the force of an atomic explosion. Nuclear weapons trigger an explosive reaction that shears off destructive energy locked inside the bomb’s atomic materials. How are a hydrogen bomb and a regular atomic bomb different? And why would that matter to the United States and its allies? Here’s what the experts say. But some experts suspect the North may have tested a “boosted” atomic bomb. North Korea claimed that a nuclear blast on Sunday was a big advance from its previous five tests because it had successfully detonated a hydrogen bomb. Credit Jeon Heon-Kyun/European Pressphoto Agency The underground blast set off tremors felt in South Korea and China. Lee Mi-sun, a senior analyst at the South Korean Meteorological Administration, with charts showing the power of the North’s nuclear test on Sunday.
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