SHOT 2 Only one station, George, collected enough fallout to be
analyzed. The small fraction NMD's were 12.6 and 10.7 p for the 2-hr
and 12-hr collectors, respectively.
sample was collected to be analyzed.
Not enough of the large fraction
It appears (Sect. 3.3.2) that
these particles were largely remains of Shot 1 fallout which had been
redistributed during Shot 2.
The small fraction NMD's ranged from 9.4 p to 20.0 m3 large
SHOT
fractions varied from 77 p to 127 pe
SHOTS 4 AND 6 Not enough radioactive material was collected from
these two shots to be analyzed for particle size distribution.
There was not enough fallout material in each collector interval
for a meaningful analysis; so the fallout from all intervals in each
collector was mixed together and analyzed. The only timing intervals
which can be compared are the entire cycling times of each collector.
On the basis of these cycles (2-hr and 12-hr) there is no trend of
particle size with time after shot, within the limits of sampling time.
Neither is there a trend of particie size with distance or direction
from ground zero within the limits of the area covered by the collectorse
The behavior of the cloud, which is discussed in Section 3.402,
is believed to account for the lack of trends of particle-size data.
The particle-size data obtained indicates that the Shot 1 cloud and
the Shot 3 cloud particles were both fairly homogeneous within the
limits of the area sampled.
Lack of data from Shots 2,4, and 6 pre~
clude any statements about the particle size distribution characteristics from these shots.
A difference was noted between the radioactive particle~size
distributions of Shot 1 and those of Shot 3, The samples collected
from Shot 1 were found to have 20 per cent of the particles under 5 py
which was 2% times as many as those collected from Shot 3 (Table 3.14)
TABLE 3.13 ~- Shots 2 and 3
Results
Shot
Station
of
2
2
3
3
3
3
3
George
|George*
Easy
Easy
Gearge
Uncle
Victor
3
Zebra
3
3
|3
bo
*
2
12
2
_-
;
i
mp
‘Over 44 p
lo
Dave
ter) tm| & Botoe fk
2
Average
Average
|2
12
Zebra
_.
f Under 44 y
Time ~
ation is Tos
Davg
12
2
12
2
' 0.4
[Uncle
3
Radioactive Particle Analysis
| 12
(1206
1.83'15.1
| Insufficient Sample
(1067 2.00,13.2
17.5 1.677'19.4
9.4 | 2.02'12.3
‘16.8 2.01 19.9
‘12.8 1.€2,14.9
|
"
| 101)
112
107
| 127]
1.57)
1.47/
1.69}
1.77)
n
125
141
140
160
16.7 1.98,17.4 | lg] 1.64; 145
‘2000 | 2410;2.5 |
95,
12.7
77
13.0
15.8
112.9
2.00'16.2
|
| 1.98:15.1
bo
|
111
1.65|
115
| 105
1-60)
123
1.93'15.7 |
1.97:19.0
1.49}
95)
|
102
2.66;
1.92;
138
106
These particles probably originated at Shot 1 and were redistributed by Shot 2
88
,