65-Tb-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 30.03 (b) 30.96 (b) 1.031 5.148 (b) 6.747 (b)
elastic 6.899 (b) 7.782 (b) 1.128 2.695 (b) 4.280 (b)
inelastic ( E-thr = 58.36 keV ) 541.2 (mb) 2.296 (b)
(n,2n) ( E-thr = 8.185 MeV ) 1.907 (b) 2.926 (mb)
(n,3n) ( E-thr = 15.01 MeV ) 3.040 (μb)
(n,na) ( E-thr = 140.4 keV ) 16.48 (μb) 8.546 (nb)
(n,np) ( E-thr = 6.170 MeV ) 228.8 (μb) 72.24 (nb)
(n,nd) ( E-thr = 11.92 MeV ) 778.1e-18 (b) 59.02e-12 (b)
(n,nt) ( E-thr = 12.02 MeV ) 112.6e-21 (b) 6.510e-12 (b)
(n,n He-3) ( E-thr = 14.16 MeV ) 1.583e-12 (b)
capture 23.13 (b) 23.18 (b) 1.002 409.1 (b) 1.581 (mb) 166.7 (mb)
(n,p) ( E-thr = 189.4 keV ) 3.860 (mb) 1.890 (μb)
(n,d) ( E-thr = 3.932 MeV ) 513.9 (μb) 107.7 (nb)
(n,t) ( E-thr = 5.622 MeV ) 6.212 (μb) 3.006 (nb)
(n,He-3) ( E-thr = 6.976 MeV ) 9.710e-15 (b) 33.56e-15 (b)
(n,a) 2.172 (nb) 2.173 (nb) 1.001 19.05 (μb) 1.909 (mb) 1.224 (μb)

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)
 .