96-Cm-242

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 36.41 (b) 37.93 (b) 1.042 5.905 (b) 7.913 (b)
elastic 12.61 (b) 14.22 (b) 1.128 2.401 (b) 4.641 (b)
inelastic ( E-thr = 42.31 keV ) 359.0 (mb) 1.321 (b)
(n,2n) ( E-thr = 6.999 MeV ) 231.1 (mb) 920.7 (μb)
(n,3n) ( E-thr = 13.12 MeV ) 119.6 (μb) 85.38 (nb)
fission 4.665 (b) 4.646 (b) 0.996 19.32 (b) 2.907 (b) 1.775 (b)
(n,fission) 4.665 (b) 4.646 (b) 0.996 18.87 (b) 1.416 (b) 1.753 (b)
(n,n,fiss) ( E-thr = 2.300 MeV ) 1.471 (b) 21.72 (mb)
(n,2n,fiss) ( E-thr = 9.500 MeV ) 19.89 (mb) 5.059 (μb)
(n,3nfiss) ( E-thr = 16.00 MeV ) 45.01e-12 (b)
capture 19.13 (b) 19.06 (b) 0.996 132.6 (b) 1.186 (mb) 172.0 (mb)
 
νp 3.452 5.546
νd 2.114e-3 1.771e-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.