part of the fallout would take about the same amount of time to descend on
the island, even though the lighter parts took longer.
Ranges of fallout time and the dose that would result from them were
calculated as follows:
Location
Dose in Rads*
Fallout Time
16 hr.
8 hr.
Rongelap
Ailinginae
Rongerik
Utirik
.
159 r
724
704
12 ¢r
209
92
106
15
r
Xr
r
xr
Since it was believed that the fallout time was less than 16 hours, and
“because of data from other sources, the figure used for the report, and the
reports from that time on were based on a fallout of 12 hours:**
Location
Best Estimate of
Gamma Dose
Rongelap
Ailinginae
Rongerik
in Air
175 r
69 r
78 x
Utirik
14 r
One additional factor of interest concerns the effect of a field, or
area,
of
fallout as opposed
to that of X-rays.
Particles of a single energy
from an X-ray machine come from a "point", or single source.
However, particles
in a fallout field, are not emitted from a single source, but many.
They are
emitted from a 369° circle around the person as he stands or walks and they
are at different energies.
Jt is as though the person is constantly being
irradiated by X-ray machines of different enerpies, placed around him in a
*From "Some Effects of Lonizing Radiation on Man", p. 6
oe
es:
**Tbid, p.
3
50103b3
96