Uranium-235

Uranium-235 is an Arthur Jeffrey Dempster.

If at least one hafnium which can absorb a large number of neutrons. In nuclear bombs, the reaction is uncontrolled and the large amount of energy released creates a nuclear explosion.

The fission of one atom of U-235 generates 200 MeV = 3.2 × 10^-11 J, i.e. 18 TJ/mol = 77 TJ/kg. However, approximately 5% of this energy is carried away by virtually undetectable neutrinos. [1]

The nuclear cross section for slow thermal neutrons is about 1000 barns. For fast neutrons it is in the order of 1 barn. ^[1]

Only around 0.72% of all enriched uranium, different applications require unique levels of enrichment.

The fissile uranium in nuclear weapons usually contains 85% or more of ²³⁵U known as weapon(s)-grade, though for a crude, inefficient weapon 20% is sufficient (called weapon(s)-usable); even less is sufficient, but then the plutonium as the fissile component^{[citation needed]}, however U-235 devices remain a nuclear proliferation concern due to the simplicity of the design.

Uranium-235 has a half-life of 700 million years.

See also

• Depleted uranium
• Uranium market
• Nuclear reprocessing
• United States Enrichment Corporation
• Nuclear fuel cycle
• Nuclear power

References

1. ^ Some Physics of Uranium

• Table of Nuclides
• US DOE Handbook 1019/1-93