221TH A DECAY (1.73 MS 3) I(MIN)=0.0010% Radiation Energy Intensity (G-Rad Type (keV) (%) uCi-h) ---------- --------------- ------------ -------- A 1 7730. 10 5.0 20 0.823 A 2 8145. 5 56. 5 9.72 A 3 8470. 5 39. 5 7.04 ---------- --------------- ------------ --------