| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 74.82 (b) | 76.85 (b) | 1.027 | − | 5.297 (b) | 7.053 (b) |
| 2 | (n,elastic) | 16.51 (b) | 18.59 (b) | 1.126 | − | 2.587 (b) | 3.971 (b) |
| 4 | (n,inelastic) | ( E-thr = 67.11 keV ) | 533.4 (mb) | 2.921 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.654 MeV ) | 2.166 (b) | 13.00 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.17 MeV ) | − | 2.997 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 120.5 (nb) | 250.0 (μb) | 84.06 (nb) |
| 28 | (n,np) | ( E-thr = 6.841 MeV ) | 170.3 (μb) | 74.74 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.23 MeV ) | 0.000 (b) | 138.6e-12 (b) | |||
| 102 | (n,γ) | 58.31 (b) | 58.26 (b) | 0.999 | 326.6 (b) | 819.6 (μb) | 147.5 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 202.1 (μb) | 10.04 (mb) | 10.09 (μb) |
| 104 | (n,d) | ( E-thr = 4.603 MeV ) | 1.653 (mb) | 357.8 (nb) | |||
| 105 | (n,t) | ( E-thr = 4.940 MeV ) | 74.85 (μb) | 23.04 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 5.274 MeV ) | 0.000 (b) | 1.144e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 161.0 (μb) | 3.093 (mb) | 14.72 (μb) |
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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 :
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 :
with EL = 0.5 eV and EU = 10 MeV.
U-235 Thermal Fission-Neutron Spectrum Average (Fiss. Spec. Average) :
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 :
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