For thermonuclear devices, in addition to gamma radiation fros
fission~product gammas, it is necessary to consider the interaction
of noutrons from the fusion process with x,
The radiation due to
the fusion process may vary over wide limits, depanding on the design
of the device.
For & given yleld, the number cf neutrons available
may be ten time: as grost for fusion: as for fission, and therefore a
.
:
lt
large ecntributic: t: gomm: radiation expose may be due to the k
(ny ¢) recetion in e thermonuclear deviee (F: ference 2).
w
$63.0Sf sce fore Scigtica.
Th. residual game rodirtic..
consists <i ficcloueproduct rudiction dreu Sellout and radiaiiws frre
novtron-induce! activity. The deca, rate of the pesidual radiation
from fallout will fellow apprexinstely the expressions:
-
“€
~~
_
-1,°
> = oat
t>
ref 1 c= 51, (t, egte
,
Fe
where:
I, = exposure ratc at tim te
1, = exposure ratc at unit time,
t
= tince
r = exposure between tines t, and t., where
t, 2 1C seconds.
ST. Loyts e020
The decry of the reciducl redteticon dc expected to very vith wer o>
Gesigy.
2
*
Fir tow Ll, th. procone. cf i.
“>
ars
.
oom om
*
13
oe
wevld tenl t. ceoarccs. t.
.
eg
-.
abSclute valuc cf the decay oxponant fer & period of tins.
~
oe