41-Nb-94

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 22.26 (b) 23.08 (b) 1.037 3.978 (b) 5.933 (b)
elastic 6.488 (b) 7.323 (b) 1.129 2.216 (b) 4.097 (b)
inelastic ( E-thr = 41.34 keV ) 316.5 (mb) 1.797 (b)
(n,2n) ( E-thr = 7.305 MeV ) 1.398 (b) 4.528 (mb)
(n,3n) ( E-thr = 16.23 MeV ) 434.5 (nb)
(n,na) ( E-thr = 2.327 MeV ) 1.575 (mb) 356.9 (nb)
(n,np) ( E-thr = 6.607 MeV ) 4.324 (mb) 1.057 (μb)
(n,nd) ( E-thr = 11.16 MeV ) 8.683 (nb) 1.956 (nb)
capture 15.77 (b) 15.76 (b) 0.999 129.2 (b) 752.7 (μb) 34.28 (mb)
(n,p) 0.000 (b) 0.000 (b) 1.523 (mb) 25.17 (mb) 80.83 (μb)
(n,d) ( E-thr = 4.358 MeV ) 5.293 (mb) 1.627 (μb)
(n,t) ( E-thr = 4.841 MeV ) 177.5 (μb) 40.97 (nb)
(n,He-3) ( E-thr = 8.501 MeV ) 281.4e-12 (b) 8.498e-12 (b)
(n,a) 0.000 (b) 0.000 (b) 1.263 (mb) 12.66 (mb) 75.40 (μb)
MT = 203 0.000 (b) 0.000 (b) 1.524 (mb) 29.49 (mb) 81.89 (μb)
MT = 204 ( E-thr = 4.358 MeV ) 5.293 (mb) 1.629 (μb)
MT = 205 ( E-thr = 4.841 MeV ) 177.5 (μb) 40.97 (nb)
MT = 206 ( E-thr = 8.501 MeV ) 281.4e-12 (b) 8.498e-12 (b)
MT = 207 0.000 (b) 0.000 (b) 1.263 (mb) 14.24 (mb) 75.75 (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)
 .