Weight-Percent of Isotope

Page Title: Weight-Percent of Isotope
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DOE-STD-1128-98

Figure 6.6.

Reduction in Photon Dose Rate with Various Shielding Materials at a Distance of 3

cm from a 100-gram Disk of Plutonium Oxide

Table 6.12. Isoptopic Composition of Plutonium Sources at 5 years After Chemical

Separation of the Plutonium

Weight-Percent of Isotope

Low-exposure Pu

High-exposure Pu

0.001

1.85

235

239Pu

93.5

63.3

240Pu

5.99

19.2

241Pu

0.397

9.27

242Pu

0.001

3.88

241Am

0.103

2.40

6-37

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