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Weapons-grade nuclear material is any fissionable nuclear material that is pure enough to make a nuclear weapon and has properties that make it particularly suitable for nuclear weapons use. Plutonium and uranium in grades normally used in nuclear weapons are the most common examples.
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%).
The nominal spherical critical mass for an untampered 235 U nuclear weapon is 56 kilograms (123 lb), [6] which would form a sphere 17.32 centimetres (6.82 in) in diameter. The material must be 85% or more of 235 U and is known as weapons grade uranium, though for a crude and inefficient weapon 20% enrichment is sufficient (called weapon(s)-usable).
The IAEA later confirmed in a confidential report to member states the accleration in enrichment, a process that refines the raw material so that it can be used as fuel in civil nuclear power ...
North Korea provided a rare glimpse Friday of a secretive uranium-enrichment facility where it produces material for its nuclear weapons program when it released several images of its leader Kim ...
According to the Nuclear Regulatory Commission(NRC), there are four different types of regulated nuclear materials: special nuclear material, source material, byproduct material and radium. [2] Special nuclear materials have plutonium, uranium-233 or uranium with U 233 or U 235 that has a content found more than in nature. Source material is ...
Iran has begun enriching uranium close to weapons-grade levels, according to a report released by the United Nations nuclear watchdog Wednesday.
Weapons-grade nuclear material; Y. Yellowcake; Z. Zirconium alloys This page was last edited on 8 March 2024, at 11:10 (UTC). Text is available under the Creative ...