76-Os-190

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 29.46 (b) 31.30 (b) 1.063 5.147 (b) 6.618 (b)
elastic 16.35 (b) 18.34 (b) 1.122 2.633 (b) 4.206 (b)
inelastic ( E-thr = 105.0 keV ) 379.5 (mb) 2.341 (b)
(n,2n) ( E-thr = 7.834 MeV ) 2.132 (b) 6.409 (mb)
(n,3n) ( E-thr = 13.79 MeV ) 45.82 (μb) 10.57 (μb)
(n,na) 0.000 (b) 0.000 (b) 120.2 (nb) 37.37 (μb) 17.45 (nb)
(n,2na) ( E-thr = 5.844 MeV ) 2.223 (nb) 10.96e-12 (b)
(n,np) ( E-thr = 8.060 MeV ) 3.110 (μb) 8.268 (nb)
(n,nd) ( E-thr = 12.89 MeV ) 679.4e-33 (b) 2.301e-12 (b)
(n,nt) ( E-thr = 12.51 MeV ) 914.6e-30 (b) 347.3e-15 (b)
capture 13.11 (b) 12.96 (b) 0.989 25.02 (b) 926.9 (μb) 65.09 (mb)
(n,p) ( E-thr = 2.370 MeV ) 1.737 (mb) 453.3 (nb)
(n,d) ( E-thr = 5.824 MeV ) 84.19 (μb) 25.80 (nb)
(n,t) ( E-thr = 6.604 MeV ) 743.3 (nb) 867.8e-12 (b)
(n,He-3) ( E-thr = 6.936 MeV ) 924.0e-21 (b) 355.8e-18 (b)
(n,a) 1.988 (nb) 1.989 (nb) 1.001 2.611 (μb) 586.2 (μb) 267.5 (nb)

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)
 .