Pure fusion weapon Totally Explained

Everything about Pure Fusion Weapon totally explained

A pure fusion weapon is a hypothetical hydrogen bomb design that doesn't need a fission "primary" explosive to ignite the fusion of deuterium and tritium, two heavy isotopes of hydrogen (see Teller-Ulam design for more information about fission-fusion weapons). Such a weapon would require no fissile material and would therefore be much easier to build in secret than existing weapons. The necessity of separating high-quality fissile material requires a substantial industrial investment, and blocking the sale and transfer of the needed machinery has been the primary mechanism to control nuclear proliferation to date. For many years, nuclear weapons designers have researched whether it's possible to create high enough temperatures and pressures inside a confined space to fuse together deuterium and tritium for the purposes of developing such a weapon. Pure fusion weapons offer the possibility of generating very small nuclear yields and the advantage of reduced collateral damage stemming from fallout because these weapons wouldn't create the highly radioactive byproducts associated with fission-type weapons. These weapons would be lethal not only because of their explosive force, which could be large compared to bombs based on chemical explosives, but also because of the neutrons they generate. The neutrons may cause substantially more casualties than the explosive blast.
   Despite the many millions of dollars spent by the U.S. between 1952 and 1992 to produce a pure fusion weapon, no measurable success was ever achieved. In 1998, the U.S. Department of Energy (DOE) released a restricted data declassification decision stating that even if the DOE made a substantial investment in the past to develop a pure fusion weapon, "the U.S. doesn't have and isn't developing a pure fusion weapon and no credible design for a pure fusion weapon resulted from the DOE investment". The power densities needed to ignite a fusion reaction still seem attainable only with the aid of a fission explosion or in large apparatus such as the Sandia Z-pinch, the Livermore National Ignition Facility, or various tokamaks. Regardless of any claimed advantages of pure fusion weapons, building those weapons doesn't appear to be feasible using currently available technologies and many have expressed concern that pure fusion weapons research and development would subvert the intent of the Comprehensive Test Ban Treaty.
   It has been claimed that it's possible to conceive of a crude, deliverable, pure fusion weapon, using only current day, unclassified technology. The weapon design weighs approximately 3 tonnes, and might have a total yield of approximately 3 tonnes of TNT. The proposed design uses a large explosively pumped flux compression generator to produce the high power density required to ignite the fusion fuel. From the point of view of explosive damage, such a weapon would have no clear advantages over a conventional explosive, but the massive neutron flux could deliver a lethal dose of radiation to humans within a 500m radius (most of those fatalities would occur over a period of months, rather than immediately).
   Some researchers have examined the use of antimatter as an alternative fusion trigger, mainly in the context of antimatter catalyzed nuclear pulse propulsion. Such a system, in a weapons context, would have many of the desired properties of a pure fusion weapon. The technical barriers to producing and containing the required quantities of antimatter appear formidable, well beyond present capabilities. Induced gamma emission is another approach that's currently being researched. Very high energy-density chemicals such as the probably mythical red mercury, various ballotechnics and others have also been suggested as a means of triggering a pure fusion weapon.

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