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A boosted fission weapon usually refers to a type of nuclear bomb that uses a small amount of fusion fuel to increase the rate, and thus yield, of a fission reaction. The neutrons released by the fusion reactions add to the neutrons released due to fission, allowing for more neutron-induced fission reactions to take place.
The first section of the book is concerned with mundane weapons and armor. It introduces many new weapons, such as the Gyrspike, a sword with a spiked ball attached to the hilt by a chain. As well, the section lists the different weapons used throughout the different cultures and time periods, and the names they were known by.
Documents declassified and released into the public domain in 2012 disclose that ET.317 was a warhead that used the fission-fusion-fission process, where a boosted-fission device codenamed Jennie triggered a fusion secondary codenamed Reggie [1] which in turn was encased in U-238 depleted uranium. [2]
This is known as a boosted fission weapon. [5] If a fission device designed for boosting is tested without the boost gas, a yield in the sub-kiloton range may indicate a successful test that the device's implosion and primary fission stages are working as designed, though this does not test the boosting process itself.
Kinglet was a boosted fission primary used in several American thermonuclear weapons. [1]The W55 warhead for the UUM-44 SUBROC anti-submarine missile and the W58 warhead for Polaris A-3 were designed to use Kinglet, while the W47 warhead for Polaris A-1/A-2 were retrofitted with Kinglet to overcome the technical issues with the Robin primary the W47 was initially deployed with.
Orange Herald fireball and subsequent mushroom cloud, film reel captured from a trailing aircraft. Orange Herald was a British nuclear weapon, tested on 31 May 1957.At the time it was reported as an H-bomb, although in fact it was a large boosted fission weapon and remains to date, the largest fission device ever detonated.
All versions were roughly the same dimensions and weight: 28–30 in (710–760 mm) in diameter, 39–39.5 in (990–1,000 mm) long, and weighing 900–945 lb (408–429 kg). The W31 is a boosted fission nuclear bomb. [1]
The W40 nuclear warhead was an American fusion-boosted fission nuclear warhead developed in the late 1950s and which saw service from 1959 to 1972.. The W40 design was reportedly the common Python primary or fission core used by the US B28 nuclear bomb, W28 nuclear warhead, and W49 nuclear warhead.