20
10
T
TT
T
10°
4
wv
g
2
=
§
2
Sb’ SPIKE
10 F-
7
a
=
S
S
rR
=
SOIL
9-10"
10.
L
0.5
l
10
!
1.5
MEV
Fig.
10.
Gamma-ray spectrum of young soil from a
depth increment of 9 to 10 in ghes compared
with the gamma spectrum of 5b 25
Aq