76-Os-186

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 100.1 (b) 100.7 (b) 1.006 5.127 (b) 6.620 (b)
elastic 20.06 (b) 22.11 (b) 1.102 2.586 (b) 4.160 (b)
inelastic ( E-thr = 105.0 keV ) 485.4 (mb) 2.356 (b)
(n,2n) ( E-thr = 8.306 MeV ) 2.045 (b) 3.498 (mb)
(n,3n) ( E-thr = 14.97 MeV ) 2.668 (μb)
(n,na) 18.25e-30 (b) 18.55e-30 (b) 0.000 28.06 (μb) 546.1 (μb) 1.056 (μb)
(n,2na) ( E-thr = 5.270 MeV ) 95.05 (nb) 314.6e-12 (b)
(n,np) ( E-thr = 6.501 MeV ) 94.76 (μb) 39.02 (nb)
(n,nd) ( E-thr = 11.97 MeV ) 2.148e-18 (b) 17.46e-12 (b)
(n,nt) ( E-thr = 12.20 MeV ) 11.03e-24 (b) 805.2e-15 (b)
(n,n He-3) ( E-thr = 14.21 MeV ) 571.9e-15 (b)
capture 80.04 (b) 78.55 (b) 0.981 242.4 (b) 958.2 (μb) 99.94 (mb)
(n,p) ( E-thr = 288.5 keV ) 5.569 (mb) 2.701 (μb)
(n,d) ( E-thr = 4.265 MeV ) 543.2 (μb) 116.5 (nb)
(n,t) ( E-thr = 5.682 MeV ) 5.930 (μb) 2.810 (nb)
(n,He-3) ( E-thr = 4.175 MeV ) 629.6e-15 (b) 79.51e-15 (b)
(n,a) 449.8 (μb) 450.0 (μb) 1.001 952.6 (μb) 4.338 (mb) 17.45 (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)
 .