![\"\"](\"https:\/\/www.azuse.cloud\/wp-content\/uploads\/2018\/09\/iran-300x169.jpg\")
<\/p>\n<\/p>\n
<\/p>\n
Several sources are reporting that Iran, that paragon of upright honest dealing, has been detected with uranium enriched at 84%.<\/p>\n
Iran has been enriching uranium to up to 60% purity since April 2021. Three months ago, it started enriching to 60% at a second site, Fordow, which is dug into a mountain. Weapons grade is around 90%.<\/p><\/blockquote>\n
You may remember, during the Obama administration Iran agreed to restrictions on its programs in exchange for many sanctions being listed. instead, it violated the agreement so repeatedly (think: arms shipments to the Afghans, Houthis, etc.) that Trump asked for, and got, renewed sanctions. At the time, if memory serves, the Iranians said they were enriching only to the 60% level.<\/p>\n
“So far, we have not made any attempt to enrich above 60%. The presence of particles above 60% enrichment does not mean production with an enrichment above 60%,” the spokesperson for Iran’s Atomic Energy Organisation, Behrouz Kamalvandi, said on Monday, according to the official IRNA News agency.<\/p><\/blockquote>\n
International Business Times<\/a><\/p>\n
About that 90% level:<\/p>\n
Uranium enrichment 101 is that the process is all about the separation of two isotopes of uranium, the slightly lighter U235 isotope from the heavier but more numerous U238 isotope. The ratio of such isotopes in natural uranium is 993 U238 atoms to just 7 U235 atoms. The enrichment process alters the ratio. The 90 percent level is when the ratio is just 1:7 \u2014 i.e., 992 atoms of U238 have been stripped out. Eighty-four percent is roughly this ratio, so a workable bomb may need just a pound or two more of U235 to function. And Twitter feeds, milking the Bloomberg story, are reminding us that the first US bomb dropped on the Japanese city of Hiroshima in 1945, used material of roughly the 84 percent level.<\/p><\/blockquote>\n