"(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.
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.
. 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.