56-Ba-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 6.366 (b) 7.035 (b) 1.105 5.078 (b) 6.264 (b)
elastic 5.184 (b) 5.852 (b) 1.129 2.886 (b) 5.492 (b)
inelastic ( E-thr = 222.7 keV ) 479.0 (mb) 751.0 (mb)
(n,2n) ( E-thr = 6.954 MeV ) 1.707 (b) 2.493 (mb)
(n,3n) ( E-thr = 15.63 MeV ) 1.907 (μb)
(n,na) ( E-thr = 567.3 keV ) 132.0 (μb) 41.74 (nb)
(n,np) ( E-thr = 7.088 MeV ) 21.86 (μb) 19.00 (nb)
(n,nd) ( E-thr = 12.94 MeV ) 0.000 (b) 39.98e-12 (b)
capture 1.183 (b) 1.183 (b) 1.000 10.24 (b) 1.284 (mb) 17.18 (mb)
(n,p) 0.000 (b) 0.000 (b) 26.78 (μb) 2.681 (mb) 1.718 (μb)
(n,d) ( E-thr = 4.760 MeV ) 210.7 (μb) 65.37 (nb)
(n,t) ( E-thr = 6.705 MeV ) 4.496 (μb) 6.465 (nb)
(n,He-3) ( E-thr = 4.331 MeV ) 485.3e-15 (b) 498.6e-15 (b)
(n,a) 0.000 (b) 0.000 (b) 24.29 (μb) 1.712 (mb) 1.963 (μb)
(n,2p) ( E-thr = 5.156 MeV ) 14.67e-15 (b) 60.65e-15 (b)

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)
 .