Menten ae
- 3 Qe
eau examined by means of the decays.
Oecay rates themselves
@remieh 2 clus &S the date of origin, if 10 18 assumed that a
constancy exists in rate of decay from one test to another.
Por
* fore
)
tissue
e,
any one tissue the siope of the pre-Nectar curves when related to
the appropriate origin might be expected to agree vith the slope
of post-Nectar curves during the corresponding interval after
Rectar.
Using the Mike test as origin, the counting period of the
pys
ane
first five pre-Nectar samples would be 650 to 930 days post-Mike,
one) veaebe -.98,
Seo -1.61,
naGl:and2,03,
~2.03, recpecrively.Toe
respectively.
muscle)
correspond ing slopes for the post-Nectar shell, liver, end suscle
samples (curves 14, 12, end 15) during the interval 700 to 900
Gays post-KRectar were -.92, -1.36, end -1.55.
:
a,
ay
.o{e
This agreement between Nike-derived and Nectar-derived
slopes is satisfactory, especially if allowance is made for some
carry-over of long-lived products from Mike into the post-Nectar
t we
material.
SoS
contributed by the detonation of March 1, 1954 at Bikini, since
XX
*%
S
SN
AA
‘
pe
“*
, 22
According to this hypothesis, no great proportion of
the radicactivity of pre-Nectar snail samples could have been
relating curves 1 to 6 to this date gives slopes of -.36, -.57,
-.75, -.68, -.62, and -.28, which are not steep enough to correspond with slopes of the post-Nectar samples.
the
remainder to Nectar.
"
The
decay curves of
Yr clams.
Pigure 22 are unusual in
gher
with time rether than to
'
tion suggests that their
verte-
equal,
that they tend to steepen
level out.
This varta-
Belle.
2,
»pness.
semi-log plots might be
linesr. Therefore, these
and other curves are shown
segeuiee
do approach linearity indicating « single half life.
eine
on semi-, insteed of loglog plot in Figure 23, and
the data appear in Table
16. Several of the curves
eee
he
7
s
3
a
:
_
,
“
Therefore, curves
1 to 6 in Pigure 22 ere referred to the Nike test as origin, end
‘*
4.
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