| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 83.27 (b) | 83.75 (b) | 1.006 | − | 4.925 (b) | 5.892 (b) |
| 2 | (n,elastic) | 3.214 (b) | 3.629 (b) | 1.129 | − | 2.923 (b) | 5.010 (b) |
| 4 | (n,inelastic) | ( E-thr = 608.0 keV ) | 437.7 (mb) | 878.3 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.847 MeV ) | 1.562 (b) | 3.109 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.15 MeV ) | − | 2.498 (μb) | |||
| 22 | (n,na) | ( E-thr = 4.258 MeV ) | 173.1 (nb) | 302.1e-12 (b) | |||
| 28 | (n,np) | ( E-thr = 8.583 MeV ) | 19.48 (μb) | 18.10 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.09 MeV ) | − | 11.69e-12 (b) | |||
| 102 | (n,γ) | 80.03 (b) | 80.08 (b) | 1.001 | 35.82 (b) | 771.2 (μb) | 348.9 (μb) |
| 103 | (n,p) | ( E-thr = 5.218 MeV ) | 799.9 (μb) | 197.3 (nb) | |||
| 104 | (n,d) | ( E-thr = 6.342 MeV ) | 94.57 (μb) | 36.85 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.781 MeV ) | 900.7 (nb) | 731.2e-12 (b) | |||
| 106 | (n,He-3) | ( E-thr = 11.79 MeV ) | 0.000 (b) | 1.947e-18 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 911.0 (nb) | 92.46 (μb) | 53.96 (nb) |
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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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