0.693
cm?
ii
aq
qZ—
absorption coefficient for B radiation
“mg
of Mo??
fraction of disintegrations detected by counter as
measured with Ra DtE standard
.
.
disintegration rate of Mo
99 _
R o°
ett
= NX
= Tare =
y* 4"
'ssa’ &
where N = Mo?” atoms
and XX = SOE
= 1.749 x i0~* min”!
fissions represented
by sample, f
d.
Nk
~ 1,749 x 10°x fission yield of Mo9?
Calculation of Fission Yield.
Given the above information on num-
ber of fissions and amount of uranium in the sample the fission yield can be
calculated as follows:
is i
i
Fiss
ion yiel
d
in megatons
e.
\
on
he
;
initi
i
al uranium
i
x £3
fissions
in
sample
uranium in sample x 1.45 x 10°° fissions /megaton
Fission Ratio Determination.
With the results of the fireball meas -
urementof total yield and the radiochemical measurementof fission yield,
the fission fraction can be calculated as shown:
‘Fission ratio = 2288ion yield in megatons
Total- yield in megatons
we
Lee
- 56 -
X