Le
Table I. - (Continued)
Per cent abundance at: 1)
Relative
Fission
One
One
One
Ten
MPC
products
week
month
year
years
Bal40
gg
10.8
---
-=-
13 days
300
Lal40
9.4
12.5
wee
eee
40 hours
200
cel44—
---
2.0
26.5
---
pril44
---
2.0
26.5
---
Pmi47
---
---
5.7
15.
Half life?)
values®)
285 days
100
17 mins.
*
950 days
2, 000
Mn°4
290 days
1, 000
Fe°5
950 days
8, 000
Fe59
45 days
600
cod?
270 days
5, 000
Co58
71 days
1, 000
Co60
1900 days
500
zn5
245 days
1, 000
Non-fission
products
1) Hunter and Ballou (1951)
2) Strominger, Hollander and Seaborg
(i958)
3) MPC values relative to $r90; based upon values from Handbook
69 for which MPC for Sr99 ig 1078yec/ec
*
A short-lived daughter for which hazard is negligible in
comparison to hazard for pavsent