64-Gd-156

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 7.073 (b) 7.752 (b) 1.096 5.324 (b) 6.700 (b)
2 (n,elastic) 5.246 (b) 5.923 (b) 1.129 2.782 (b) 4.483 (b)
4 (n,inelastic) ( E-thr = 89.55 keV ) 736.3 (mb) 2.079 (b)
16 (n,2n) ( E-thr = 8.592 MeV ) 1.800 (b) 2.398 (mb)
17 (n,3n) ( E-thr = 15.07 MeV ) 1.670 (μb)
22 (n,na) ( E-thr = 199.6 keV ) 107.7 (μb) 39.70 (nb)
24 (n,2na) ( E-thr = 8.511 MeV ) 114.1e-15 (b) 3.252e-12 (b)
28 (n,np) ( E-thr = 8.058 MeV ) 39.24 (μb) 31.31 (nb)
32 (n,nd) ( E-thr = 14.02 MeV ) 1.411e-12 (b)
102 (n,γ) 1.827 (b) 1.829 (b) 1.001 106.6 (b) 983.3 (μb) 136.3 (mb)
103 (n,p) ( E-thr = 1.678 MeV ) 5.983 (mb) 2.386 (μb)
104 (n,d) ( E-thr = 5.820 MeV ) 292.9 (μb) 67.02 (nb)
105 (n,t) ( E-thr = 7.726 MeV ) 498.1 (nb) 890.2e-12 (b)
106 (n,He-3) ( E-thr = 6.985 MeV ) 1.031e-15 (b) 7.918e-15 (b)
107 (n,a) 342.5e-12 (b) 342.6e-12 (b) 1.001 21.53 (μb) 2.509 (mb) 1.848 (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).

MT is a number that defines a reaction type. For the relation between MT and reaction type, please see here or refer to the manual of ENDF formats.

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)
 .