41-Nb-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 7.498 (b) 8.319 (b) 1.109 3.973 (b) 5.754 (b)
elastic 6.356 (b) 7.176 (b) 1.129 2.229 (b) 4.478 (b)
inelastic ( E-thr = 30.73 keV ) 349.8 (mb) 1.246 (b)
(n,2n) ( E-thr = 8.922 MeV ) 1.335 (b) 1.489 (mb)
(n,3n) ( E-thr = 16.90 MeV ) 213.7 (nb)
(n,na) ( E-thr = 1.968 MeV ) 2.262 (mb) 1.474 (μb)
(n,np) ( E-thr = 6.105 MeV ) 11.17 (mb) 4.603 (μb)
capture 1.142 (b) 1.143 (b) 1.000 8.982 (b) 1.002 (mb) 28.42 (mb)
(n,p) 0.000 (b) 0.000 (b) 3.998 (mb) 29.98 (mb) 294.5 (μb)
(n,d) ( E-thr = 3.856 MeV ) 5.913 (mb) 3.195 (μb)
(n,a) 0.000 (b) 0.000 (b) 1.013 (mb) 7.339 (mb) 79.47 (μb)
MT = 203 0.000 (b) 0.000 (b) 4.074 (mb) 41.15 (mb) 299.1 (μb)
MT = 204 ( E-thr = 3.856 MeV ) 5.913 (mb) 3.195 (μb)
MT = 207 0.000 (b) 0.000 (b) 1.050 (mb) 9.601 (mb) 80.95 (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)
 .