uranium-235

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Related to U235: uranium, plutonium

uranium-235

n.
The uranium isotope with mass number 235 and half-life 7.04 × 108 years, fissionable with slow neutrons and capable in a critical mass of sustaining a chain reaction that can proceed explosively with appropriate mechanical arrangements.

uranium-235

n
(Elements & Compounds) a uranium radioisotope that is used in nuclear fission
References in periodicals archive ?
Separative Work (SW) stands for the effort necessary to separate U235 and U238, which is measured in kilograms of SW.
Besides others, dangerous materials such as heavy water, uranium enriched U235, plutonium and their compounds, spent irradiated fuel elements from a nuclear reactor and other highly toxic and nuclear substances are named to be stored in the facility.
Its SWU is a standard unit of measurement that represents the effort required to transform a given amount of uranium into two components, including enriched uranium having a higher percentage of U235 and depleted uranium having a lower percentage of U235.
The enrichment process relies on the small difference in weight of the atoms of U235 and U238 and centrifuges are used to separate them.
CDATA[ With the current disclosed rate of UF6 20% growth, Iran will have enough 20% U235 stock for more than one nuclear bomb's worth of 90% U235 by this coming April 2013.
The PFN tool measures the amount of the isotope U235 that is present in all natural uranium.
Since mined uranium is less than 1% U235, it must undergo expensive and energy-intensive enrichment to reach the concentration of U-235 needed for LWR fuel.
5 percent range and are non-explosive, as weapons-grade uranium must be enriched to at least 90 percent U235.
It is the volatile U235 which is used in atom bombs, and not U238.
These include 5% duties on natural uranium and its compounds; uranium enriched in U235 and compounds; plutonium and compounds; and alloys, dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U235 or plutonium.
7% of the fissile isotope U235, a civil reactor requires 3.
Approximately 135 of the operating reactors (in 40 countries) use HEU, which is defined as uranium that has been enriched so that at least 20 percent of its composition is U235, the isotopic form of uranium that can be induced to fission and hence is suited not only for use in nuclear reactors but as a material in nuclear weapons.