## 6-C-0

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 4.947 (b) 5.580 (b) 1.128 1.304 (b) 2.366 (b)
2 (n,elastic) 4.942 (b) 5.575 (b) 1.128 803.6 (mb) 2.353 (b)
4 (n,inelastic) ( E-thr = 4.812 MeV ) 426.9 (mb) 11.42 (mb)
102 (n,γ) 3.860 (mb) 3.862 (mb) 1.001 1.885 (mb) 70.41 (μb) 22.92 (μb)
103 (n,p) ( E-thr = 13.64 MeV ) 164.0 (μb) 184.2 (nb)
104 (n,d) ( E-thr = 14.89 MeV ) 218.9 (nb)
107 (n,a) ( E-thr = 6.181 MeV ) 72.65 (mb) 1.223 (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).

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)
.