| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 38.09 (b) | 39.49 (b) | 1.037 | − | 4.847 (b) | 6.014 (b) |
| 2 | (n,elastic) | 10.56 (b) | 11.92 (b) | 1.129 | − | 2.733 (b) | 4.399 (b) |
| 4 | (n,inelastic) | ( E-thr = 39.89 keV ) | 271.0 (mb) | 1.587 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.656 MeV ) | 1.827 (b) | 4.235 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.55 MeV ) | − | 708.1 (nb) | |||
| 22 | (n,na) | ( E-thr = 686.0 keV ) | 97.88 (μb) | 33.14 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.063 MeV ) | 340.9 (μb) | 149.6 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.95 MeV ) | 233.8e-21 (b) | 37.18e-12 (b) | |||
| 102 | (n,γ) | 27.53 (b) | 27.57 (b) | 1.002 | 278.5 (b) | 959.6 (μb) | 23.83 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 381.0 (μb) | 16.11 (mb) | 23.92 (μb) |
| 104 | (n,d) | ( E-thr = 4.820 MeV ) | 612.5 (μb) | 138.5 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.644 MeV ) | 7.006 (μb) | 3.390 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.240 MeV ) | 2.216e-12 (b) | 148.1e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 52.98 (μb) | 1.452 (mb) | 5.129 (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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