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

Select target paragraph3