uranium-235

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Related to U-235: U-238

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 ?
"(International Atomic Energy Agency) Director General Yukiya Amano has informed the IAEA Board of Governors that Agency inspectors on 8 July verified that Iran is enriching uranium above 3.67% U-235," an IAEA spokesman said, referring to the fissile uranium-235 isotope.
Production of either U-235 or Pu239 is extremely difficult.
Then, the sensitivity to neutrons depends on the quantity of element fissile (U-235) at the electrode.
On 23 and 24 April 2016, the Agency verified that the recovered quantity of uranium enriched up to 3.67% U-235 was 35.7 kg.
Needless to say, despite the initial criticism, the novel is extremely interesting, based on an imponderable supposition: Stalin demanding development of an atomic bomb, despite the Soviets' inability to develop one for a decade or more, to place it on a par with the United States in a post-war era; and development of a deceitful plot to steal purified U-235 from the United States to make the weapon while implicating the Nazis as the culprits.
In ordinary uranium, atoms of U-235 occur in the proportion of only one atom in 140, the remaining 139 atoms being U-238.
The nuclear power plant produces electricity by extracting energy through fission reaction from uranium (U-235) and any other nuclear fuel.
Thus, the induced fission energy of this isotope U-235 is directed to the nozzle using a magnetic reflector.
But a nuclear explosive device requires high-enriched uranium (i.e., 90 percent or more U-235) containing twenty-five kilograms of U-235, and producing such material would necessitate an enrichment plant with an annual capacity of 5,000 SWUs.
U-235. Whereas, in contrast, the nuclear reactor core contains nuclear fuel and generates heat.
Uranium, extracted from deposits, consists of two forms of the element, known as isotopes - U-238 and U-235 with the latter, the useful radioactive part, at just 0.72%.
Russia plans to return spent nuclear fuel as UO2SO4 solution of not more than 30 liters and a mass of uranium enriched in the isotope U-235 not greater than 5 kilograms.