28-Ni-59

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
(n,total) 91.81 (b) 92.19 (b) 1.004 2.770 (b) 3.997 (b)
(n,elastic) 2.305 (b) 2.602 (b) 1.129 1.311 (b) 2.893 (b)
(n,inelastic) ( E-thr = 345.2 keV ) 471.9 (mb) 993.6 (mb)
(n,2n) ( E-thr = 9.153 MeV ) 450.1 (mb) 272.4 (μb)
(n,na) ( E-thr = 6.206 MeV ) 4.262 (mb) 997.4 (nb)
(n,np) ( E-thr = 8.746 MeV ) 332.9 (mb) 99.46 (μb)
(n,nd) ( E-thr = 15.20 MeV ) 507.1e-12 (b)
(n,γ) 75.60 (b) 75.65 (b) 1.001 119.8 (b) 928.9 (μb) 2.608 (mb)
(n,p) 1.448 (b) 1.447 (b) 1.000 2.786 (b) 138.1 (mb) 90.49 (mb)
(n,d) ( E-thr = 6.483 MeV ) 11.81 (mb) 4.843 (μb)
(n,t) ( E-thr = 8.839 MeV ) 178.6 (μb) 27.92 (nb)
(n,He-3) ( E-thr = 7.970 MeV ) 2.973 (μb) 981.3e-12 (b)
(n,a) 12.46 (b) 12.46 (b) 1.001 19.34 (b) 46.88 (mb) 16.03 (mb)
MT = 203 1.448 (b) 1.447 (b) 1.000 2.786 (b) 470.9 (mb) 90.59 (mb)
MT = 204 ( E-thr = 6.483 MeV ) 11.81 (mb) 4.844 (μb)
MT = 205 ( E-thr = 8.839 MeV ) 178.6 (μb) 27.92 (nb)
MT = 206 ( E-thr = 7.970 MeV ) 2.973 (μb) 981.3e-12 (b)
MT = 207 12.46 (b) 12.46 (b) 1.001 19.34 (b) 51.14 (mb) 16.03 (mb)

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)
 .