96-Cm-240

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 91.08 (b) 92.82 (b) 1.019 5.921 (b) 7.935 (b)
elastic 10.92 (b) 12.33 (b) 1.129 2.735 (b) 4.566 (b)
inelastic ( E-thr = 38.16 keV ) 343.9 (mb) 1.137 (b)
(n,2n) ( E-thr = 7.570 MeV ) 97.35 (mb) 70.66 (μb)
(n,3n) ( E-thr = 13.87 MeV ) 702.6 (nb) 4.891 (nb)
fission 30.01 (b) 30.05 (b) 1.001 187.9 (b) 2.742 (b) 2.046 (b)
(n,fission) 30.01 (b) 30.05 (b) 1.001 187.3 (b) 1.288 (b) 2.016 (b)
(n,n,fiss) ( E-thr = 2.100 MeV ) 1.451 (b) 29.49 (mb)
(n,2n,fiss) ( E-thr = 10.00 MeV ) 2.034 (mb) 1.819 (μb)
(n,3nfiss) ( E-thr = 16.50 MeV ) 2.318e-12 (b)
capture 50.01 (b) 49.99 (b) 1.000 293.0 (b) 1.226 (mb) 184.3 (mb)
 
νp 3.285 5.525
νd 1.020e-3 7.190e-4

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.