-9-
(
‘.
;,,
. .
,.
I
1
1
I
I
I II
I
I
I Ill
I
I
I
1
I
25
.
20
15
10
(-
5
0.1
0.5
1
5
10
50
Particle
aerodynamicdiameter,pm
Figure 2.
Plutonium activity (pCi g-l) versus particle aerodynamic diameter D
(pm) at the 1.1 m height over bare soil on Bikini Island (wind
speed 4.5 m S-l, surface contamination 15.3 pCi g-l).
●
*
(.,
.
.