40-Zr-91

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
(n,total) 12.24 (b) 13.65 (b) 1.116 3.842 (b) 5.699 (b)
(n,elastic) 10.98 (b) 12.39 (b) 1.129 2.138 (b) 4.998 (b)
(n,inelastic) ( E-thr = 1.218 MeV ) 360.3 (mb) 689.3 (mb)
(n,2n) ( E-thr = 7.283 MeV ) 1.304 (b) 2.294 (mb)
(n,3n) ( E-thr = 19.40 MeV ) 703.3e-12 (b)
(n,na) ( E-thr = 5.513 MeV ) 3.772 (μb) 2.126 (nb)
(n,np) ( E-thr = 8.805 MeV ) 2.729 (mb) 673.9 (nb)
(n,nd) ( E-thr = 13.49 MeV ) 0.000 (b) 2.898 (nb)
(n,γ) 1.261 (b) 1.262 (b) 1.000 5.726 (b) 1.002 (mb) 9.070 (mb)
(n,p) ( E-thr = 769.0 keV ) 27.38 (mb) 100.2 (μb)
(n,d) ( E-thr = 6.556 MeV ) 2.356 (mb) 641.4 (nb)
(n,t) ( E-thr = 7.165 MeV ) 83.94 (μb) 18.22 (nb)
(n,He-3) ( E-thr = 8.652 MeV ) 627.1e-12 (b) 7.323e-12 (b)
(n,a) 0.000 (b) 0.000 (b) 1.214 (mb) 7.865 (mb) 136.1 (μb)
MT = 203 ( E-thr = 769.0 keV ) 30.11 (mb) 101.2 (μb)
MT = 204 ( E-thr = 6.556 MeV ) 2.356 (mb) 644.3 (nb)
MT = 205 ( E-thr = 7.165 MeV ) 83.94 (μb) 18.22 (nb)
MT = 206 ( E-thr = 8.652 MeV ) 627.1e-12 (b) 7.323e-12 (b)
MT = 207 0.000 (b) 0.000 (b) 1.217 (mb) 7.869 (mb) 136.4 (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)
 .