51-Sb-125

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 9.040 (b) 9.576 (b) 1.059 4.638 (b) 5.520 (b)
elastic 4.017 (b) 4.534 (b) 1.129 2.929 (b) 4.405 (b)
inelastic ( E-thr = 334.8 keV ) 241.9 (mb) 992.9 (mb)
(n,2n) ( E-thr = 8.785 MeV ) 1.462 (b) 1.716 (mb)
(n,3n) ( E-thr = 15.31 MeV ) 2.614 (μb)
(n,na) ( E-thr = 4.871 MeV ) 256.3 (nb) 827.1e-12 (b)
(n,np) ( E-thr = 7.365 MeV ) 312.8 (μb) 73.09 (nb)
(n,nd) ( E-thr = 13.60 MeV ) 0.000 (b) 98.31e-12 (b)
(n,nt) ( E-thr = 13.36 MeV ) 0.000 (b) 37.95e-12 (b)
capture 5.002 (b) 5.005 (b) 1.001 55.86 (b) 1.003 (mb) 119.9 (mb)
(n,p) ( E-thr = 1.580 MeV ) 2.213 (mb) 943.3 (nb)
(n,d) ( E-thr = 5.036 MeV ) 180.7 (μb) 63.76 (nb)
(n,t) ( E-thr = 7.364 MeV ) 3.533 (μb) 7.233 (nb)
(n,a) 0.000 (b) 0.000 (b) 463.9 (nb) 1.019 (mb) 241.5 (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)
 .