Central to calculations about centrifuges is their efficiency, usually measured in terms of separative work units (SWUs), which relate to both the amount of material processed and the degree of enrichment
Enrichment is not negotiable, but the details including site, level and degree of enrichment
can be discussed between the two sides, Araqchi said.
Iran needs this degree of enrichment
for its medical research reactor, which can produce isotopes for cancer treatment.
33 Table 7b: Enrichment factor (Sutherland, 2000) of heavy metal classes EF Indices Degree of Enrichment
EF [less Background concentration than or equal to 1 EF1-2 Depletion to minimal enrichment EF2- 5 Moderate enrichment EF5-20 Significant enrichment EF20- 40 Very high enrichment EF>40 Extremely high enrichment Table 8a: Contamination factor (CF) and Pollution Load Index (PLI) of heavy metals in Obajana dry season soil samples Heavy Sample Locations metals (mgf Obj Obj Obj Obj Obj0 L) 02 04 06 OS 9 Fe 1.
m], with lower extension temperatures showing a greater degree of enrichment
(data not shown).
Wheatgerm bread often has slightly more zinc than wholemeal, depending on the degree of enrichment
The threshold, now even closer given the recent disclosures regarding the degree of enrichment
reached at the Fordow plant (well beyond 20%), would not alleviate Israeli security concerns and might tip the balance in Israeli assessments over the costs and benefits of a military operation against nuclear sites in Iran.