26
6.
Fractionated neutron-induced nuclides, curies
Each neutron-induced nuclide was put into the original ORIGEN
calculation as 1.43 x 10)? atoms or one atom produced per
fission.
The resulting curies appeared in the decay matrix
referred to in sections 3 and 4 above.
The curies of
fractionated, neutron-induced nuclides was calculated by
(A/F) * bfA) + D(A), = KT ,
I(A),
where I(A),
fractionated curies of mass A as a function of
i
>
~
aA
time,
atoms per fission of mass A (input data),
b(A) = 1.0 for volatile masses 181-203,
b(A) = fraction of refractory elements present, f,
(input data) for refractory masses 7-74 and
204-242--note that there are no datafor any
volatile nuclide in these mass ranges,
D(A), = curies of mass A as a function of time,
assuming a production of 1 atom per fission.
Fractionated neutron-induced nuclides, mR/hr
IMR(A) t
where IMR(A),
"1
7.
1(A), + C(A)
mR/hr due to mass A measured 1 m above
the ground as a function of time.