sy
yt
‘aa
Table 9
“4
Flight
28 ip
>.
fly
fue
m
“fox,
Initial
5/27
:
2 &
11/30
3,560
74
S83
0.12
274 dfn
272
99
&7
0.33
18,500
46
1240
0.08
210
0.32
14
35,800 d/n
": £
cre
12/18
1,400 d/m
wy
a
sr99/o,89
sr®Sigp99
12/8
4
d/a
Activity
4,800 a/m
aoe
7
gg89-90
Sr 90
gas:
$3
Theoretical (Ivy)
_
(USSR )
a:
tee
roo
Pe
Fr 2ist
showed an average of 0.08 d/n/m’, of which 0,02 d/a/e” was radibstrontiu.
The stromtium percentage, as for the jet semples, was much higher than
expected.
&
A lZegallan stainless steel pot was used to collect accumulated] rainfall
ws
December 23rd cf 1480 d/min., of which 745 d/min. were radiostrpntium.
sr
o
and dry fallout on the rocf at NTO during the period of July 15¢h
to
Again the strontium percentage is higher than expected.
“gt
*
oe
The armlyses of samples taken during the test period indicate al lower
radiostrontium content than expected, while thoes taken well
er
detonation show a relatively high rediostrontiim content. Sinck
the re-
os
+
“h
a
aw
Ye
as will be discussed, it i probap je that fraectiamtion hms cooprred.
The late formation of Sr?” and Sr
compared to the life of the] firee
ball male i¢ possible that they are more highly dispersed. The] carly
fallout is deficient in radicetromtiimm, since the smaller partibles remain suspended, while the later fallout ami particularly the
erial
stored in the upper atmosphere camtains an excess,
cont high altitude measwemexts give the highest strontium peropntage,
The sr9°ay89 ratios are quite constant for a given time since
as show; in Table 8.
However for mixed fallout from sore than
the Sr? /3z88 ratio can probably be wed only as an approximatibn of the
relative amount of material from each series, The mt ezzect of fractionation appears to be minim], As not
the Sr §
measured in soil is in good agreement with the pre
ty, based on heesupgments of total fallowt in the area and the
earlier,
sted actiri-
contribution of gr°*"99,
Of interest; is the comparison of 89/90 measured in bone with
Predicted in soil, The latter is based on fallout measurement
the age of the fnllout inte sensiderrtion, As sucn iz Figure 7,f
in bene is higher than predisted by @ factor of about 2.
the ratio
—_—_—_—_—_——______
06131986.025
4. ow
aS
:
"
ype wy
os
-
Air snuples collected on the rogt at WYO during the myer of Des
6,04
LOS 1054