ACTIVITY-MASS RELATIONSHIPS FOR URANIUM

Uranium Enrichment 1 wt percent U-235 present Specific Activity Tbq/g Ci/g 0.45 1.8 x 10 -8 5.0 x 10 -7 0.72 2.6 x 10 -8 7.1 x 10 -7 1.0 2.8 x 10 -8 7.6 x 10 -7 1.5 3.7 x 10 -8 1.0 x 10 -6 5.0 1.0 x 10 -7 2.7 x 10 -6 10.0 1.8 x 10 -7 4.8 x 10 -6 20.0 3.7 x 10 -7 1.0 x 10 -5 35.0 7.4 x 10 -7 2.0 x 10 -5 50.0 9.3 x 10 -7 2.5 x 10 -5 90.0 2.2 x 10 -6 5.8 x 10 -5 93.0 2.6 x 10 -6 7.0 x 10 -5 95.0 3.4 x 10 -6 9.1 x 10 -5 1 The figures for uranium include representative values for the activity of the uranium-234 that is concentrated during the enrichment process.