73-Ta-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 26.34 (b) 27.14 (b) 1.030 5.369 (b) 7.000 (b)
elastic 5.666 (b) 6.387 (b) 1.127 2.991 (b) 4.613 (b)
inelastic ( E-thr = 6.235 keV ) 241.9 (mb) 2.295 (b)
(n,2n) ( E-thr = 7.686 MeV ) 2.133 (b) 5.148 (mb)
(n,3n) ( E-thr = 14.30 MeV ) 6.299 (μb)
(n,np) ( E-thr = 5.968 MeV ) 163.0 (μb) 55.01 (nb)
capture 20.68 (b) 20.75 (b) 1.003 659.9 (b) 205.5 (nb) 85.63 (mb)
(n,p) ( E-thr = 241.9 keV ) 3.723 (mb) 2.304 (μb)
(n,a) 0.000 (b) 0.000 (b) 1.156 (μb) 116.3 (μb) 90.67 (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)
 .