Lc
Table I. - (Continued)
Per cent abundanceat: 1)
Fission
One
One
One
Ten
products
week
month
year
years
Relative
MPC
Half life?)
values?!
Bal40
g.8
10.8
---
-=--
13 days
300
Lal4d
9.4
12.5
---
---
40 hours
200
Ce 144
---
2.0
26.5
---
Pri44
---
2.0
26.5
---
Pmi47
---
---
5.7
15.8
285 days
100
17 mins.
*
950 days
2, 000
Mn°?4
290 days
1, 000
Feo
950 days
8, 000
Fe59
45 days
600
Cod?
270 days
5, 000
Co58
71 days
1, 000
Co6E
1900 days
500
zn®5
245 days
1, 000
Nor-fission
products
1) Hunter and Ballou (1951)
2) Strominger, Hollander and Seaborg (1958)
3) MPC values relative to Sr99; based upon values from Handbook
69 for which MPC for Sr90 ig 107Sye/cec
*
A short-lived daughter for which hazard is negligible in
comparison to hazard for parent