40-Zr-90

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
(n,total) 5.288 (b) 5.969 (b) 1.129 3.842 (b) 5.693 (b)
(n,elastic) 5.277 (b) 5.958 (b) 1.129 2.183 (b) 5.203 (b)
(n,inelastic) ( E-thr = 1.780 MeV ) 925.7 (mb) 480.1 (mb)
(n,2n) ( E-thr = 12.12 MeV ) 611.3 (mb) 83.00 (μb)
(n,na) ( E-thr = 6.749 MeV ) 21.13 (μb) 36.70 (nb)
(n,np) ( E-thr = 8.457 MeV ) 74.46 (mb) 16.94 (μb)
(n,nd) ( E-thr = 17.81 MeV ) 499.4e-15 (b)
(n,γ) 10.66 (mb) 10.66 (mb) 1.000 165.2 (mb) 909.4 (μb) 8.478 (mb)
(n,p) ( E-thr = 1.518 MeV ) 41.04 (mb) 174.5 (μb)
(n,d) ( E-thr = 6.121 MeV ) 1.120 (mb) 243.3 (nb)
(n,t) ( E-thr = 11.47 MeV ) 1.548 (nb) 1.729 (nb)
(n,He-3) ( E-thr = 7.796 MeV ) 377.1e-12 (b) 28.18e-12 (b)
(n,a) 0.000 (b) 0.000 (b) 262.6 (μb) 8.385 (mb) 11.51 (μb)
(n,2p) ( E-thr = 9.175 MeV ) 251.5e-12 (b) 28.61e-12 (b)
MT = 203 ( E-thr = 1.518 MeV ) 115.5 (mb) 192.0 (μb)
MT = 204 ( E-thr = 6.121 MeV ) 1.120 (mb) 244.2 (nb)
MT = 205 ( E-thr = 11.47 MeV ) 1.548 (nb) 1.729 (nb)
MT = 206 ( E-thr = 7.796 MeV ) 377.1e-12 (b) 28.18e-12 (b)
MT = 207 0.000 (b) 0.000 (b) 262.8 (μb) 8.406 (mb) 11.56 (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)
 .