26-Fe-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 13.90 (b) 15.37 (b) 1.105 2.590 (b) 3.287 (b)
elastic 11.34 (b) 12.80 (b) 1.129 1.198 (b) 2.616 (b)
inelastic ( E-thr = 14.66 keV ) 746.5 (mb) 661.1 (mb)
(n,2n) ( E-thr = 7.782 MeV ) 379.8 (mb) 94.49 (μb)
(n,na) ( E-thr = 7.455 MeV ) 785.1 (μb) 364.9 (nb)
(n,np) ( E-thr = 9.020 MeV ) 93.80 (mb) 19.30 (μb)
capture 2.565 (b) 2.566 (b) 1.001 1.342 (b) 801.0 (μb) 3.496 (mb)
(n,p) 0.000 (b) 0.000 (b) 50.31 (mb) 126.8 (mb) 5.764 (mb)
(n,a) 7.235e-21 (b) 16.33e-21 (b) 0.000 7.450 (mb) 42.65 (mb) 367.9 (μb)
MT = 203 0.000 (b) 0.000 (b) 50.31 (mb) 220.6 (mb) 5.784 (mb)
MT = 207 7.235e-21 (b) 16.33e-21 (b) 0.000 7.450 (mb) 43.43 (mb) 368.3 (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)
 .