108
+
SPECIFIC BETA ACTIVITY (ARBITRARY UNITS)
© ISOLATED PARTICLES
©} CENTRIFUGATIONS/SIZE FRACTIONS
10! -
10°
Io?
7
i
Figure 2.
{
L
1a
|
l
10°
DIAMETER (jum)
i
L
|
10"
1
i
Specific Beta Activity of Particles from a Low-Yield Airburst.
570
10?