15
3x10
T—_
T
l
10°
-
137
Cs
SPIKE
a 10°
-
3
S
=
@3
2
S 10+
SbSPIKE
4
SOIL
:
S
>
rer
Fig. 6.
l
0.5
!
1.0
MEV
L
15
Gamma-ray spectrum of a 9 to 10-inch-depth
increment from old soil compared with the
gamma spectra of Sb?25 and csl37,
woe
at Oo .
Me
10!
9-10"
.
1
etcrr
teh
t
i
‘
A i 4 a wR
.