8-O-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 3.955 (b) 4.463 (b) 1.129 1.607 (b) 2.757 (b)
elastic 3.955 (b) 4.463 (b) 1.129 895.7 (mb) 2.745 (b)
inelastic ( E-thr = 6.430 MeV ) 507.2 (mb) 3.859 (mb)
(n,2n) ( E-thr = 16.65 MeV ) 2.147 (nb)
(n,na) ( E-thr = 7.613 MeV ) 36.52 (mb) 3.463 (μb)
(n,np) ( E-thr = 12.89 MeV ) 0.000 (b) 109.0 (nb)
capture 189.4 (μb) 189.5 (μb) 1.001 671.7 (μb) 99.76 (μb) 113.3 (μb)
(n,p) ( E-thr = 10.24 MeV ) 43.59 (mb) 20.21 (μb)
(n,d) ( E-thr = 10.53 MeV ) 15.36 (mb) 3.879 (μb)
(n,a) ( E-thr = 2.355 MeV ) 108.7 (mb) 8.195 (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)
 .