96-Cm-247

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 163.0 (b) 164.4 (b) 1.009 5.954 (b) 8.040 (b)
elastic 8.348 (b) 9.378 (b) 1.123 2.706 (b) 4.492 (b)
inelastic ( E-thr = 61.92 keV ) 272.2 (mb) 1.631 (b)
(n,2n) ( E-thr = 5.177 MeV ) 447.3 (mb) 14.36 (mb)
(n,3n) ( E-thr = 11.66 MeV ) 66.24 (mb) 9.469 (μb)
fission 94.74 (b) 95.11 (b) 1.004 953.0 (b) 2.462 (b) 1.861 (b)
(n,fission) 94.74 (b) 95.11 (b) 1.004 952.7 (b) 1.354 (b) 1.846 (b)
(n,n,fiss) ( E-thr = 900.0 keV ) 790.6 (mb) 14.95 (mb)
(n,2n,fiss) ( E-thr = 6.500 MeV ) 315.1 (mb) 154.3 (μb)
(n,4n) ( E-thr = 17.20 MeV ) 1.655 (nb)
(n,3nfiss) ( E-thr = 14.50 MeV ) 4.077 (nb)
capture 59.93 (b) 59.97 (b) 1.001 502.6 (b) 698.0 (μb) 40.02 (mb)
 
νp 3.790 6.618
νd 1.340e-2 9.160e-3

These cross sections are calculated from JENDL-4.0 at 300K.
The background color of each cell noted a cross section means the order of the cross-section value.
The unit of cross section, (b), means barns, and SI prefixes are used as following.
(kb) → 103(b),   (mb) → 10−3(b),  (μb) → 10−6(b),  (nb) → 10−9(b).

Maxwellian Average :
σmacs(T) =
2
 
 
π
EU
 
EL
σ(E,T) ⋅ E ⋅ exp (
E
  
kBT
) dE
 
EU
 
EL
E ⋅ exp (
E
  
kBT
) dE
,
where T denotes the temperature, and kB the Boltzmann constant. The upper and lower limits of integration, EL and EU are set to 10−5 eV and 10 eV, respectively.
Resonance Integral :
σri(T) =
EU
 
EL
σ(E,T) ⋅
1
 
E
dE ,
with  EL = 0.5 eV  and  EU = 10 MeV.
U-235 Thermal Fission-Neutron Spectrum Average (Fiss. Spec. Average) :
σfacs(T) =
EU
 
EL
σ(E,T) ⋅
 
4
 
πa3b
⋅ exp (
ab E
     
4 a
) ⋅ sinh
 
bE
dE
 
EU
 
EL
 
4
 
πa3b
⋅ exp (
ab E
     
4 a
) ⋅ sinh
 
bE
dE
,
with  EL = 10−5 eV  and  EU = 20 MeV. The parameters a and b are 0.988 MeV and 2.249 MeV−1, respectively.
Westcott g-factor :
g(T) =
σmacs(T)
 
σ(0.0253 eV,T)
 .


νp, νd : numbers of prompt and delayed neutrons per fission.