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A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or from a combination of fission and fusion reactions (thermonuclear bomb). Both bomb types release large quantities of energy from relatively small amounts of matter. The first test of a fission ("atomic") bomb released an amount of energy approximately equal to 20,000 tons of TNT (84 TJ). The first thermonuclear ("hydrogen") bomb test released energy approximately equal to 10 million tons of TNT (42 PJ).[1] A thermonuclear weapon weighing little more than 2,400 pounds (1,100 kg) can release energy equal to more than 1.2 million tons of TNT (5.0 PJ).[2] A nuclear device no larger than traditional bombs can devastate an entire city by blast, fire, and radiation. Since they are weapons of mass destruction, the proliferation of nuclear weapons is a focus of international relations policy.
Thermonuclear weapon
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"H-Bomb" redirects here.
Basics of the Teller–Ulam configuration. The X-rays produced by a directed primary fission explosion at one end of a chamber heat and compress fuel material at the other end, triggering the secondary fusion reaction.
A thermonuclear weapon is a second generation nuclear weapon design using a secondary nuclear fusion stage consisting of implosion tamper, fusion fuel, and sparkplug which is bombarded by the energy released by the detonation of a primary fission bomb within, compressing the fuel material (tritium, deuterium or lithium deuteride) and causing a fusion reaction. Some advanced designs use fast neutrons produced by this second stage to ignite a third fast fission or fusion stage. The fission bomb and fusion fuel are placed near each other in a special radiation-reflecting container called a radiation case that is designed to contain x-rays for as long as possible. The result is greatly increased explosive power when compared to single-stage fission weapons. The device is colloquially referred to as a hydrogen bomb or, an H-bomb, because it employs the fusion of isotopes of hydrogen.[1]
W80 (nuclear warhead)
A W80 nuclear warhead "physics package"
The W80 is a small thermonuclear warhead (fusion or, more descriptively, two-stage weapon) in the U.S. enduring stockpile with a variable yield of between 5 and 200 kt of TNT.
It was designed for deployment on cruise missiles and is the warhead used in the majority of nuclear-armed US Air Force ALCM and ACM missiles, and their US Navy counterpart, the BGM-109 Tomahawk. It is essentially a modification of the widely deployed B61 weapon, which forms the basis of most of the current US stockpile. The very similar W84 warhead was deployed on the BGM-109G Gryphon GLCM.
Plutonium-239
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This article is about an isotope of plutonium. For the film also known as The Half Life of Timofey Berezin, see Pu-239 (film).
Plutonium-239
Plutonium ring.jpg
A 99.96% pure ring of plutonium
Full table
General
Name, symbol Plutonium-239,239Pu
Neutrons 145
Protons 94
Nuclide data
Half-life 24,110 years
Parent isotopes 243Cm (α)
239Am (EC)
239Np (β−)
Decay products 235U
Isotope mass 239.0521634 u
Spin + 1⁄2
Decay mode Decay energy
Alpha decay 5.156 MeV
Plutonium-239 is an isotope of plutonium. Plutonium-239 is the primary fissile isotope used for the production of nuclear weapons, although uranium-235 has also been used. Plutonium-239 is also one of the three main isotopes demonstrated usable as fuel in thermal spectrum nuclear reactors, along with uranium-235 and uranium-233. Plutonium-239 has a half-life
Hyatt Hotels Corporation is an American multinational owner, operator, and franchiser of hotels, resorts, and vacation properties. The Hyatt Corporation came into being upon purchase of the Hyatt House, at Los Angeles International Airport, on September 27, 1957. As of September 30, 2016, Hyatt has 679 properties in 54 countries.[3] In 2017, Fortune magazine listed Hyatt as the 32nd-best U.S. company to work for.[2]
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