31-Ga-69

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 10.42 (b) 11.48 (b) 1.101 3.193 (b) 3.755 (b)
2 (n,elastic) 8.223 (b) 9.279 (b) 1.128 1.593 (b) 2.926 (b)
4 (n,inelastic) ( E-thr = 323.4 keV ) 720.3 (mb) 809.0 (mb)
16 (n,2n) ( E-thr = 10.46 MeV ) 790.8 (mb) 186.2 (μb)
22 (n,na) ( E-thr = 4.548 MeV ) 1.833 (mb) 856.8 (nb)
28 (n,np) ( E-thr = 6.704 MeV ) 17.07 (mb) 21.90 (μb)
32 (n,nd) ( E-thr = 14.79 MeV ) 5.008 (nb)
102 (n,γ) 2.201 (b) 2.201 (b) 1.000 18.22 (b) 772.3 (μb) 16.92 (mb)
103 (n,p) ( E-thr = 126.1 keV ) 39.37 (mb) 2.612 (mb)
104 (n,d) ( E-thr = 4.447 MeV ) 6.081 (mb) 4.960 (μb)
105 (n,t) ( E-thr = 8.446 MeV ) 358.6 (μb) 74.16 (nb)
106 (n,He-3) ( E-thr = 9.010 MeV ) 11.15 (nb) 48.01e-12 (b)
107 (n,a) 0.000 (b) 0.000 (b) 6.221 (mb) 23.34 (mb) 437.6 (μb)
111 (n,2p) ( E-thr = 10.56 MeV ) 323.6e-12 (b) 65.79e-12 (b)

These cross sections are calculated from JENDL-3.2 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)
 .