76-Os-188

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 13.23 (b) 14.10 (b) 1.066 5.132 (b) 6.610 (b)
elastic 7.727 (b) 8.605 (b) 1.114 2.610 (b) 4.186 (b)
inelastic ( E-thr = 105.0 keV ) 430.5 (mb) 2.348 (b)
(n,2n) ( E-thr = 8.032 MeV ) 2.086 (b) 4.863 (mb)
(n,3n) ( E-thr = 14.36 MeV ) 5.910 (μb)
(n,na) 0.000 (b) 0.000 (b) 1.744 (μb) 134.5 (μb) 97.85 (nb)
(n,2na) ( E-thr = 5.294 MeV ) 57.52 (nb) 93.91e-12 (b)
(n,np) ( E-thr = 7.248 MeV ) 20.83 (μb) 19.86 (nb)
(n,nd) ( E-thr = 12.41 MeV ) 63.35e-24 (b) 7.273e-12 (b)
(n,nt) ( E-thr = 12.33 MeV ) 83.20e-27 (b) 555.4e-15 (b)
capture 5.503 (b) 5.495 (b) 0.999 154.0 (b) 955.2 (μb) 69.99 (mb)
(n,p) ( E-thr = 1.345 MeV ) 3.688 (mb) 1.231 (μb)
(n,d) ( E-thr = 5.012 MeV ) 252.3 (μb) 58.51 (nb)
(n,t) ( E-thr = 6.117 MeV ) 2.370 (μb) 1.622 (nb)
(n,He-3) ( E-thr = 5.516 MeV ) 1.068e-15 (b) 7.306e-15 (b)
(n,a) 12.35 (μb) 12.15 (μb) 0.984 27.35 (μb) 1.645 (mb) 1.820 (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)
 .