fissile

(redirected from Fissile isotope)
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Synonyms for fissile

capable of undergoing nuclear fission

capable of being split or cleft or divided in the direction of the grain

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References in periodicals archive ?
It is believed that, thanks to the active efforts of the intelligence agencies, the USSR foreign intelligence extracted about 12,000 sheets of A4 format from the US Atomic Project Manhattan with detailed information on the designs of the first US atomic bombs, information on the properties of the fissile and other radioactive materials used in them, and technologies the production of the fissile isotope of uranium [92.sup.235]U and the fissile isotope of plutonium [94.sup.239]Pu [5].
London, Feb 11 (ANI): Iran has announced that it will produce uranium enriched to contain 20 per cent of the fissile isotope uranium-235, which is to refuel a reactor in Tehran that makes medical isotopes, after talks aimed at acquiring the fuel abroad stalled.
In the case of uranium ions, one will have two different ion streams--one for the rare, fissile isotope of mass 2.35 and one for the common, non-fissile isotope of mass 238; [.sup.235]U comprises about 0.7% of natural uranium.
If this spent fuel is from commercial light-water reactors, operating in their normal mode, the separated plutonium will contain only around 60 per cent of plutonium-239, which is the fissile isotope. Although there is some debate about how usable this material is for making nuclear weapons, there is no doubt at all that the plant could produce weapons-grade material (that is 90 per cent plus plutonium-239) if it were fed with appropriate spent fuel (perhaps from a dedicated reactor).
Normal uranium contains about 0.7% of the fissile isotope U235, a civil reactor requires 3.5% and a bomb over 90%.
Natural uranium contains less than 1 per cent of the fissile isotope.
235U: The only naturally occurring fissile isotope. Natural uranium contains 0.71% 235U while weapons-grade uranium has more than 90%
The detonations blanketed the islands with irradiated debris, including Plutonium-239, the fissile isotope used in nuclear warheads, which has a half-life of 24,000 years.
The last IAEA report in August said that Iran had doubled the number of centrifuges -- which spin uranium gas at supersonic speeds to increase the proportion of a fissile isotope -- to around 2,000.
First, during the talks in Baghdad, the P5+1 might seek an early confidence-building agreement by which Iran voluntarily ceases enriching to 20% content in the U-235 fissile isotope and blends down or ships out their stockpile of such uranium, which is closer to weapons grade.
First, during the talks in Baghdad, the P5 1 might seek an early confidence-building agreement by which Iran voluntarily ceases enriching to 20 percent content in the U-235 fissile isotope and blends down or ships out their stockpile of such uranium, which is closer to weapons grade.