Uv
tT
1
1
q
q
-
7
-
lOOOf
GAMMA
ACTIVITY
.
and
3
A
'
Pk.
on
I PLANKTON
STATIONS 50,51,52,53 2
7
rk
\;
=
Co / Zn’ =0.19/ 1.0
{
~
'
———- PLANKTON STATIONS 43,44,45,46 7
-
Co’ Zn= 0.9/1.0
lOk
PLANKTON STATION 42
65
57
Co/Zn = 5.5/1.0
a
58
=
Co
81 MEV
FCO”
*
J2MEV .SIMEV
i
02
Fig. 2
7
_
]
04
-
~
“
“
_
84
MEV
l
06 08
MEV
10
Co
Co SPIKE
aa
|MEV Co
|
+s MEV
L
l2
~
~
[
14
Gamma spectrum curves from three areas west of
Eniwetok Atoll showing the variation in ratio
of ComT/en®5,
The gamma peaks of mn 54 6098,
and C960 are also indicated.
The gamma peaks
of a C0° spike are shown for comparison.