56 MILLER AND SARTOR Table 6—ION CURRENT PER FISSION FOR SIEVED FRACTIONS OF FALLOUT SAMPLES [i(100) (1072 ma at 100 hr per fission)]} Midrange particle diameter, u Station 22 66 132 100 3.88 3.30 0.950 101 3.74 1,48 1.14 201 203 305 4.50 0.271* 3.96 2.07 1.70 1.78 1.02 1.72 1.10 403 505 3.90 4.42 2.34 2.39 0,821* 1.37 0.49 1.86 207 264 530 1060 1.02 0.676 0.844 0.855 0.680 0.668 0.678 1.04 0.967 0.997 0.983 0.782 0.669 1.02 1,00 0.693 0,768 1.72 0.610 0.462 1.01 0.656 1.00 0.615 >4000 1.32 0.791 0.751 0.662 0.784 0.846 1.60 0.741 1.04 16.8* 4.62* 8.44* 0.726 1,48 15.9* 1.08 3.24* 4.28* 19.7* 603 3.02 813 Mean Smoothed curve Y ,, (100) 3.56 4.06 0.942 1.82 1.25 0.989 0.810 0.848 3.90* 0.759 1.53 0.871 1.52 1.05 1.26 4.06 1.64 1.82 0.734 1.10 0.444 0.78 0.315 0.76 0.306 0.87 0.351 1.05 0.424 1.26 0.508 T07 Tp, 0.942 0.422 1.06 0.255 0.682 2120 0.181 0.176 35.9* 0.880 10.3* 0.202 0.244 0.292 * Values not used in calculating mean values. i(100) (10°29 MA AT 100 HR PER FISSION) ER L -— _ = 0.] 10 & MEDIAN VALUE FOR ALL SAMPLES bot patil 100 f _ prtitil 1000 } d, Fig. 1—Variation of i(100) with particle diameter. — fot bt it ty 10,000