| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.370 (b) | 7.130 (b) | 1.119 | − | 3.695 (b) | 4.949 (b) |
| 2 | (n,elastic) | 5.890 (b) | 6.650 (b) | 1.129 | − | 1.975 (b) | 3.495 (b) |
| 4 | (n,inelastic) | ( E-thr = 153.0 keV ) | 668.9 (mb) | 1.426 (b) | |||
| 16 | (n,2n) | ( E-thr = 10.61 MeV ) | 998.6 (mb) | 247.9 (μb) | |||
| 17 | (n,3n) | ( E-thr = 19.46 MeV ) | − | 39.17e-12 (b) | |||
| 22 | (n,na) | ( E-thr = 6.696 MeV ) | 7.160 (μb) | 16.23 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.109 MeV ) | 17.10 (mb) | 11.37 (μb) | |||
| 32 | (n,nd) | ( E-thr = 15.50 MeV ) | − | 34.51e-12 (b) | |||
| 102 | (n,γ) | 480.2 (mb) | 480.4 (mb) | 1.000 | 8.752 (b) | 997.5 (μb) | 26.42 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 4.758 (mb) | 27.26 (mb) | 479.7 (μb) |
| 104 | (n,d) | ( E-thr = 4.858 MeV ) | 1.876 (mb) | 554.3 (nb) | |||
| 105 | (n,t) | ( E-thr = 9.172 MeV ) | 20.32 (μb) | 8.328 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 10.14 MeV ) | 0.000 (b) | 2.456e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 105.4 (μb) | 5.087 (mb) | 4.861 (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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