5-B-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
(n,total) 768.5 (b) 769.5 (b) 1.001 1.424 (b) 2.468 (b)
(n,elastic) 4.679 (b) 5.278 (b) 1.128 936.5 (mb) 2.333 (b)
(n,inelastic) ( E-thr = 790.7 keV ) 292.4 (mb) 37.17 (mb)
(n,2n) ( E-thr = 8.980 MeV ) 6.472 (mb) 7.008 (μb)
(n,na) ( E-thr = 9.460 MeV ) 80.90 (mb) 22.06 (μb)
(n,np) ( E-thr = 12.26 MeV ) 884.7 (μb) 169.0 (nb)
(n,n2a) ( E-thr = 12.15 MeV ) 14.38 (mb) 2.960 (μb)
(n,nd) ( E-thr = 17.27 MeV ) 1.069 (nb)
(n,nt) ( E-thr = 12.25 MeV ) 598.7 (μb) 136.1 (nb)
(n,γ) 103.6 (mb) 103.6 (mb) 1.001 46.83 (mb) 4.234 (μb) 19.52 (μb)
(n,p) 597.0 (μb) 597.4 (μb) 1.001 13.07 (mb) 10.69 (mb) 3.034 (mb)
(n,d) ( E-thr = 4.801 MeV ) 16.85 (mb) 251.8 (μb)
(n,t) ( E-thr = 10.44 MeV ) 11.98 (mb) 2.758 (μb)
(n,a) 763.6 (b) 764.0 (b) 1.001 342.4 (b) 34.88 (mb) 86.73 (mb)
(n,t2a) 1.598 (mb) 1.599 (mb) 1.001 39.95 (mb) 18.84 (mb) 7.593 (mb)
MT = 600 597.0 (μb) 597.4 (μb) 1.001 7.057 (mb) 669.4 (μb) 2.331 (mb)
MT = 601 ( E-thr = 3.460 MeV ) 2.786 (mb) 661.1 (μb)
MT = 602 ( E-thr = 6.311 MeV ) 1.417 (mb) 17.39 (μb)
MT = 603 ( E-thr = 6.313 MeV ) 937.2 (μb) 10.23 (μb)
MT = 604 ( E-thr = 6.554 MeV ) 300.4 (μb) 2.679 (μb)
MT = 605 ( E-thr = 6.646 MeV ) 1.355 (mb) 11.16 (μb)
MT = 650 ( E-thr = 4.801 MeV ) 5.586 (mb) 235.4 (μb)
MT = 651 ( E-thr = 7.476 MeV ) 3.891 (mb) 13.16 (μb)
MT = 800 48.12 (b) 48.14 (b) 1.001 21.71 (b) 3.152 (mb) 36.67 (mb)
MT = 801 715.5 (b) 715.9 (b) 1.001 320.7 (b) 6.590 (mb) 50.01 (mb)

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)
 .