15
3x10
3
T
T
T
4
10°
Cs” SPIKE
2
» 10°
$
S
7
t
qo
S 10}
:
S
1
SPIKE
Sb.’
:
SOIL
7
Rr
2
tir
10°
Fig. 6.
9 -10"
!
0.5
t
1.0
MEV
i
1.5
.
Gamma-ray spectrum of a 3 to i0-inch depth
increment from old soil compared with the
gamna spectra of Sb 5 and csl37,
22