31-Ga-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 9.850 (b) 10.76 (b) 1.092 3.228 (b) 3.770 (b)
elastic 7.047 (b) 7.956 (b) 1.129 1.624 (b) 2.903 (b)
inelastic ( E-thr = 323.4 keV ) 706.9 (mb) 849.4 (mb)
(n,2n) ( E-thr = 9.435 MeV ) 831.6 (mb) 271.3 (μb)
(n,3n) ( E-thr = 17.20 MeV ) 15.53 (nb)
(n,na) ( E-thr = 4.548 MeV ) 1.733 (mb) 670.9 (nb)
(n,np) ( E-thr = 6.704 MeV ) 10.85 (mb) 13.30 (μb)
(n,nd) ( E-thr = 14.79 MeV ) 3.142 (nb)
capture 2.803 (b) 2.805 (b) 1.001 23.79 (b) 761.4 (μb) 14.99 (mb)
(n,p) ( E-thr = 126.1 keV ) 31.40 (mb) 1.610 (mb)
(n,d) ( E-thr = 4.447 MeV ) 4.867 (mb) 3.420 (μb)
(n,t) ( E-thr = 8.446 MeV ) 292.3 (μb) 62.29 (nb)
(n,He-3) ( E-thr = 9.010 MeV ) 6.702 (nb) 29.48e-12 (b)
(n,a) 0.000 (b) 0.000 (b) 3.850 (mb) 15.39 (mb) 267.7 (μb)
(n,2p) ( E-thr = 10.56 MeV ) 194.5e-12 (b) 39.55e-12 (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)
 .