i,
Ee
1
and
4
are
|
30
ts
L
CHANNEL
t,
160
“180
700
fot
F
Ei gdy
the
3
3
used
aah
0
Sites.
—_—
—_ a
—_ =
ae
MINUTE / CHANNEL
TT TTT
COUNTS
bands
T
Shaded areas indicate our estimates of the
Typical field spectrum.
Figure 1.
due to indicated isotope and
peak area used to determine the total dose rate for
gamma
atural
determinin
>
2 Examples of Low Gamma Activity Spectra
_— Courtright
Ns
20
|
Figure 2.
40
Examples
of
Spectra
~ 47
taken
Res. 7710 Ft.
‘~~ Asbestos Mine 933 Ft.
/N
120
|
CHANNEL
200
at
Low
gamma
activity