26-Fe-56

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
(n,total) 14.78 (b) 16.36 (b) 1.107 2.590 (b) 3.249 (b)
(n,elastic) 12.19 (b) 13.77 (b) 1.129 1.199 (b) 2.574 (b)
(n,inelastic) ( E-thr = 862.1 keV ) 772.9 (mb) 670.2 (mb)
(n,2n) ( E-thr = 11.40 MeV ) 389.2 (mb) 64.57 (μb)
(n,na) ( E-thr = 7.757 MeV ) 840.1 (μb) 382.4 (nb)
(n,np) ( E-thr = 10.37 MeV ) 70.94 (mb) 12.23 (μb)
(n,γ) 2.591 (b) 2.593 (b) 1.001 1.348 (b) 800.1 (μb) 3.392 (mb)
(n,p) ( E-thr = 2.971 MeV ) 114.0 (mb) 1.057 (mb)
(n,a) 0.000 (b) 0.000 (b) 6.926 (mb) 40.90 (mb) 332.8 (μb)
MT = 203 ( E-thr = 2.971 MeV ) 184.9 (mb) 1.069 (mb)
MT = 207 0.000 (b) 0.000 (b) 6.926 (mb) 41.74 (mb) 333.2 (μb)

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)
 .