96-Cm-241

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 1.211 (kb) 1.213 (kb) 1.002 5.925 (b) 8.292 (b)
elastic 10.62 (b) 11.99 (b) 1.129 2.735 (b) 4.391 (b)
inelastic ( E-thr = 5.523 keV ) 439.8 (mb) 1.645 (b)
(n,2n) ( E-thr = 6.119 MeV ) 175.4 (mb) 2.152 (mb)
(n,3n) ( E-thr = 13.69 MeV ) 4.077 (μb) 18.33 (nb)
fission 1.000 (kb) 999.5 (b) 0.999 853.5 (b) 2.570 (b) 2.213 (b)
(n,fission) 1.000 (kb) 999.5 (b) 0.999 853.4 (b) 1.844 (b) 2.207 (b)
(n,n,fiss) ( E-thr = 2.300 MeV ) 624.6 (mb) 6.304 (mb)
(n,2n,fiss) ( E-thr = 8.000 MeV ) 102.6 (mb) 16.72 (μb)
(n,3nfiss) ( E-thr = 16.50 MeV ) 205.2e-15 (b)
capture 200.1 (b) 199.9 (b) 0.999 79.41 (b) 808.8 (μb) 38.25 (mb)
 
νp 3.390 5.714
νd 1.460e-3 1.020e-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.