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A thermonuclear weapon, fusion weapon or hydrogen bomb (H bomb) is a second-generation nuclear weapon design. Its greater sophistication affords it vastly greater destructive power than first-generation nuclear bombs , a more compact size, a lower mass, or a combination of these benefits.
In 1950, John Wheeler was setting up a secret H-bomb research lab at Princeton University. Lyman Spitzer, Jr., an avid mountaineer, was aware of this program and suggested the name "Project Matterhorn". [3] Spitzer, a professor of astronomy, had for many years been involved in the study of very hot rarefied gases in interstellar space.
Using a combination of explosive wave-shaping and "gun-barrel" design, up to 5% of a small nuclear bomb could reportedly be converted into kinetic energy driving a beam of particles with a beam angle of 0.001 radians (0.057 degrees), far more concentrated than the earlier-proposed plasma jet, though this decreases to 1% efficiency at 50 ...
The court followed up its momentous ruling on affirmative action Thursday with another sweeping decision throwing out President Joe Biden’s $430 billion student loan forgiveness plan, setting ...
The United States was the first nation to develop the hydrogen bomb, testing an experimental prototype in 1952 ("Ivy Mike") and a deployable weapon in 1954 ("Castle Bravo"). Throughout the Cold War it continued to modernize and enlarge its nuclear arsenal, but from 1992 on has been involved primarily in a program of stockpile stewardship.
The Atomic Bomb Survivors Relief Law defines hibakusha as people who fall into one or more of the following categories: within a few kilometers of the hypocenters of the bombs; within 2 km (1.2 mi) of the hypocenters within two weeks of the bombings; exposed to radiation from fallout; or not yet born but carried by pregnant women in any of the three previously mentioned categories. [4]
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A conventional hydrogen bomb includes two stages; the primary is an atomic bomb normally based on plutonium, while the secondary is a mixture of fusion fuel and various boosters. The primary releases an intense burst of X-rays that heat channel filler materials (believed to be similar to styrofoam ) surrounding the secondary.