.
‘
‘
.
~_
.
“y
i,
4
+
:
cabana, hlaTS ce
a eaten Ba ab tak bd ite, aides ts waa
‘
nuclide
Oo
activity.
ae
Any activity detected ir blark samples represents the
Contamination
and equipment.
con-
.
introduced into the sample by the Laboratory reagents
The average blank walue for each nuclide with its
measure of uncertainty is then subtracted from the sample activity.
1 cubic
The Po-210 activity has been decay corrected for ingrowth from
its Pb-210 parent for the interval between its separation date and the
in
day of collection.
The reported error reflects the uncertainty of
poth the
Po-210 measurements.
anno-
Pb-210 and
RESULTS5§5
An error in the volume computations of ten samples from the April
“he
1AOSteetBAMFN ol EMI ate
a
1969 mission was uncovered.
The corrected radiochemical concentrations
for these ten samples are given in Table 3a.
The radiochemical analy-
ses Of the individual and composite samples from the July 1969 miss.on
are reported in Table 3b.
The gross gamma and Zr-95 concentrations derived from NaI(T1)
gamma spectral analyses of the October 1969 mission are given in
mal
Table 3c.
ci-
its daughter Nb-95 at counting time.
Such spectra reflect the combined photopeaks Gf Zr-95 and
To calculate the quantity of ax??
in this mixture, the production date of the fresh fission product de¥
bris must be known.
The Zr-95 data
in
Table 3c were calculated on
the
assumption that most of the Zr-95 in each of three latitude regions of
It - 13