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- Variable_yield abstract "Variable yield—or dial-a-yield—is an option available on most modern nuclear weapons. It allows the operator to specify a weapon's yield, or explosive power, allowing a single design to be used in different situations. For example, the Mod-10 B61 bomb had selectable explosive yields of 0.3, 5, 10 or 80 kilotons, depending on how the ground crew set a dial inside the casing when it was loaded onto an aircraft.Variable yield technology has existed since at least the early 1960s. Examples of variable yield weapons include the B61 nuclear bomb family, B83, W80, W85, and WE177A warheads.Most modern nuclear weapons are Teller–Ulam design type thermonuclear weapons, with a fission primary stage and a fusion (or fission) secondary stage which is collapsed by the energy from the primary. These offer at least three methods to vary yield: Varying primary yield by boosting with fusion, using small amounts of deuterium / tritium gas inside the primary fission bomb to increase its yield. Typically, the gas is injected a few seconds before detonation and the amount used can be preset. Varying primary yield by varying the timing or use of external neutron initiators (ENIs). These are small particle accelerators that cause a brief fusion reaction by accelerating deuterium into a tritium target (or potentially vice-versa), producing a short pulse of energetic neutrons. Precise timing of the ENI pulse as the nuclear primary's pit is collapsing can significantly affect yield, and the rate of neutron injection can also be controlled. Shutting down the thermonuclear secondary, either by firing the primary at low enough yield that it does not compress the secondary sufficiently to ignite, or by blocking energy transport inside the warhead briefly as the primary is firing using shutters or a similar mechanism. If the primary's energy starts to disperse through the radiation case before being focused on the secondary then the secondary will likely never detonate.All current British nuclear warheads incorporate variable yield technology as standard.".
- Variable_yield wikiPageExternalLink www.nuclearweaponarchive.org.
- Variable_yield wikiPageID "1045744".
- Variable_yield wikiPageRevisionID "605112092".
- Variable_yield hasPhotoCollection Variable_yield.
- Variable_yield subject Category:Nuclear_weapons.
- Variable_yield type Artifact100021939.
- Variable_yield type Device103183080.
- Variable_yield type Instrument103574816.
- Variable_yield type Instrumentality103575240.
- Variable_yield type NuclearWeapon103834604.
- Variable_yield type NuclearWeapons.
- Variable_yield type Object100002684.
- Variable_yield type PhysicalEntity100001930.
- Variable_yield type Weapon104565375.
- Variable_yield type WeaponOfMassDestruction104565963.
- Variable_yield type Whole100003553.
- Variable_yield comment "Variable yield—or dial-a-yield—is an option available on most modern nuclear weapons. It allows the operator to specify a weapon's yield, or explosive power, allowing a single design to be used in different situations. For example, the Mod-10 B61 bomb had selectable explosive yields of 0.3, 5, 10 or 80 kilotons, depending on how the ground crew set a dial inside the casing when it was loaded onto an aircraft.Variable yield technology has existed since at least the early 1960s.".
- Variable_yield label "Bombe à puissance variable".
- Variable_yield label "Variable yield".
- Variable_yield label "Ядерная боеголовка изменяемой мощности".
- Variable_yield label "可变当量".
- Variable_yield sameAs Bombe_à_puissance_variable.
- Variable_yield sameAs m.0416zs.
- Variable_yield sameAs Q2600764.
- Variable_yield sameAs Q2600764.
- Variable_yield sameAs Variable_yield.
- Variable_yield wasDerivedFrom Variable_yield?oldid=605112092.
- Variable_yield isPrimaryTopicOf Variable_yield.