15
3x10
-
10°
137
Cs
SPIKE
2
&
>
=
3
q
S
Sb
S 10F
§
~
>
Fig. 6.
_
SPIKE
7
SOIL
ir
10"
125.
9-10"
L
05
l
1.0
MEV
l
1.5
Gamma-ray spectrum of a 9 to 10-inch-depth
increment from old soil compared with the
gamma spectra of sbt25 and csl37,