28-Ni-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
(n,total) 22.32 (b) 24.63 (b) 1.103 2.760 (b) 3.651 (b)
(n,elastic) 17.86 (b) 20.16 (b) 1.129 1.335 (b) 3.185 (b)
(n,inelastic) ( E-thr = 68.52 keV ) 406.8 (mb) 379.3 (mb)
(n,2n) ( E-thr = 7.950 MeV ) 172.1 (mb) 42.16 (μb)
(n,3n) ( E-thr = 16.76 MeV ) 625.4e-12 (b)
(n,na) ( E-thr = 6.397 MeV ) 5.045 (mb) 1.440 (μb)
(n,np) ( E-thr = 8.313 MeV ) 468.2 (mb) 143.9 (μb)
(n,nd) ( E-thr = 15.38 MeV ) 104.6e-15 (b)
(n,γ) 4.465 (b) 4.467 (b) 1.000 2.177 (b) 56.35 (μb) 7.804 (mb)
(n,p) 0.000 (b) 0.000 (b) 429.6 (mb) 267.5 (mb) 73.57 (mb)
(n,d) ( E-thr = 6.050 MeV ) 6.652 (mb) 3.079 (μb)
(n,t) ( E-thr = 9.018 MeV ) 2.516 (μb) 2.631 (nb)
(n,He-3) ( E-thr = 6.593 MeV ) 17.05 (μb) 3.908 (nb)
(n,a) 0.000 (b) 0.000 (b) 46.58 (mb) 91.16 (mb) 5.223 (mb)
(n,2p) ( E-thr = 6.671 MeV ) 8.033 (mb) 1.484 (μb)
MT = 203 0.000 (b) 0.000 (b) 429.8 (mb) 751.8 (mb) 73.72 (mb)
MT = 204 ( E-thr = 6.050 MeV ) 6.652 (mb) 3.079 (μb)
MT = 205 ( E-thr = 9.018 MeV ) 2.516 (μb) 2.631 (nb)
MT = 206 ( E-thr = 6.593 MeV ) 17.05 (μb) 3.908 (nb)
MT = 207 0.000 (b) 0.000 (b) 46.58 (mb) 96.20 (mb) 5.225 (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)
 .