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2. Natural uranium - Wikipedia

   en.wikipedia.org/wiki/Natural_uranium

   Natural uranium (NU or U nat [1]) is uranium with the same isotopic ratio as found in nature. It contains 0.711% uranium-235 , 99.284% uranium-238 , and a trace of uranium-234 by weight (0.0055%). Approximately 2.2% of its radioactivity comes from uranium-235, 48.6% from uranium-238, and 49.2% from uranium-234.

3. Nuclear fuel - Wikipedia

   en.wikipedia.org/wiki/Nuclear_fuel

   Nuclear fuel refers to any substance, ... U content about 0.1 percentage points higher than in natural uranium. ... thermophotovoltaic cells, alkali-metal thermal to ...

4. Spent nuclear fuel - Wikipedia

   en.wikipedia.org/wiki/Spent_nuclear_fuel

   For natural uranium fuel, fissile component starts at 0.7% 235 U concentration in natural uranium. At discharge, total fissile component is still 0.5% (0.2% 235 U, 0.3% fissile 239 Pu, 241 Pu ). Fuel is discharged not because fissile material is fully used-up, but because the neutron-absorbing fission products have built up and the fuel becomes ...

5. Fission products (by element) - Wikipedia

   en.wikipedia.org/wiki/Fission_products_(by_element)

   Caesium-134 is found in spent nuclear fuel but is not produced by nuclear weapon explosions, as it is only formed by neutron capture on stable Cs-133, which is only produced by beta decay of Xe-133 with a half-life of 3 days. Cs-134 has a half-life of 2 years and may be a major source of gamma radiation in the first 20 years after discharge.

6. Enriched uranium - Wikipedia

   en.wikipedia.org/wiki/Enriched_uranium

   Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235 U) has been increased through the process of isotope separation.Naturally occurring uranium is composed of three major isotopes: uranium-238 (238 U with 99.2732–99.2752% natural abundance), uranium-235 (235 U, 0.7198–0.7210%), and uranium-234 (234 U, 0.0049–0.0059%).

7. Former SpaceX engineer seeks to help end US dearth of ... - AOL

   www.aol.com/news/former-spacex-engineer-seeks...

   Former SpaceX engineer Scott Nolan, CEO of startup General Matter, is on a mission to help end Russia's monopoly on a type of more-enriched nuclear fuel by producing it at commercial scale in the ...

8. 3 Renewable Energy Stocks to Buy in 2025 and Hold for Decades

   www.aol.com/3-renewable-energy-stocks-buy...

   The point is, fuel cells may be on the verge of entering the mainstream. As is the case with NuScale Power, Plug Power's potential upside is paired with significant risks. Chief among them is a ...

9. Energy density Extended Reference Table - Wikipedia

   en.wikipedia.org/wiki/Energy_density_Extended...

   battery, Hydrogen closed cycle H fuel cell [17] 1.62: Hydrazine decomposition (as monopropellant) 1.6: 1.6: Ammonium nitrate decomposition (as monopropellant) 1.4: 2.5: Thermal Energy Capacity of Molten Salt: 1 [citation needed] 98% [18] Molecular spring approximate [citation needed] 1: battery, Lithium–Manganese [19] [20] 0.83-1.01: 1.98-2. ...