40-Zr-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 6.613 (b) 7.441 (b) 1.125 3.842 (b) 5.701 (b)
elastic 6.417 (b) 7.245 (b) 1.129 2.156 (b) 5.004 (b)
inelastic ( E-thr = 928.6 keV ) 640.0 (mb) 687.5 (mb)
(n,2n) ( E-thr = 7.283 MeV ) 972.3 (mb) 1.150 (mb)
(n,3n) ( E-thr = 14.46 MeV ) 323.4 (nb)
(n,na) ( E-thr = 3.000 MeV ) 322.8 (μb) 90.43 (nb)
(n,np) ( E-thr = 8.457 MeV ) 38.74 (mb) 8.827 (μb)
(n,nd) ( E-thr = 13.49 MeV ) 0.000 (b) 334.8e-12 (b)
(n,nt) ( E-thr = 15.88 MeV ) 176.8e-15 (b)
capture 195.7 (mb) 195.8 (mb) 1.000 1.008 (b) 781.4 (μb) 7.645 (mb)
(n,p) ( E-thr = 769.0 keV ) 29.03 (mb) 105.2 (μb)
(n,d) ( E-thr = 6.121 MeV ) 964.5 (μb) 233.4 (nb)
(n,t) ( E-thr = 7.165 MeV ) 15.56 (μb) 7.513 (nb)
(n,He-3) ( E-thr = 7.796 MeV ) 264.4e-12 (b) 15.36e-12 (b)
(n,a) 0.000 (b) 0.000 (b) 460.8 (μb) 7.566 (mb) 31.81 (μb)
(n,2p) ( E-thr = 9.175 MeV ) 129.4e-12 (b) 14.72e-12 (b)
MT = 203 ( E-thr = 769.0 keV ) 67.76 (mb) 114.3 (μb)
MT = 204 ( E-thr = 6.121 MeV ) 964.5 (μb) 233.4 (nb)
MT = 205 ( E-thr = 7.165 MeV ) 15.56 (μb) 7.504 (nb)
MT = 206 ( E-thr = 7.796 MeV ) 264.4e-12 (b) 15.36e-12 (b)
MT = 207 0.000 (b) 0.000 (b) 460.9 (μb) 7.889 (mb) 31.88 (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)
 .