51-Sb-123

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 8.103 (b) 8.610 (b) 1.063 4.739 (b) 5.785 (b)
elastic 3.915 (b) 4.419 (b) 1.129 2.530 (b) 4.509 (b)
inelastic ( E-thr = 161.6 keV ) 494.6 (mb) 1.213 (b)
(n,2n) ( E-thr = 9.039 MeV ) 1.709 (b) 1.445 (mb)
(n,3n) ( E-thr = 15.90 MeV ) 469.0 (nb)
(n,na) ( E-thr = 3.962 MeV ) 3.563 (μb) 1.358 (nb)
(n,np) ( E-thr = 6.627 MeV ) 347.0 (μb) 99.74 (nb)
capture 4.188 (b) 4.191 (b) 1.001 122.4 (b) 1.005 (mb) 61.22 (mb)
(n,p) ( E-thr = 632.8 keV ) 6.175 (mb) 9.909 (μb)
(n,d) ( E-thr = 4.384 MeV ) 1.310 (mb) 419.2 (nb)
(n,t) ( E-thr = 6.947 MeV ) 13.69 (μb) 13.15 (nb)
(n,a) 0.000 (b) 0.000 (b) 3.362 (μb) 1.259 (mb) 415.2 (nb)
MT = 203 ( E-thr = 632.8 keV ) 6.522 (mb) 10.01 (μb)
MT = 204 ( E-thr = 4.384 MeV ) 1.310 (mb) 419.2 (nb)
MT = 205 ( E-thr = 6.947 MeV ) 13.69 (μb) 13.15 (nb)
MT = 207 0.000 (b) 0.000 (b) 3.362 (μb) 1.262 (mb) 416.6 (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)
 .