| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.490 (b) | 3.861 (b) | 1.106 | − | 4.895 (b) | 6.386 (b) |
| 2 | (n,elastic) | 2.877 (b) | 3.248 (b) | 1.129 | − | 2.693 (b) | 5.406 (b) |
| 4 | (n,inelastic) | ( E-thr = 645.8 keV ) | 545.8 (mb) | 969.4 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.221 MeV ) | 1.642 (b) | 1.782 (mb) | |||
| 17 | (n,3n) | ( E-thr = 12.69 MeV ) | 3.520 (mb) | 1.399 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 1.148 (μb) | 301.7 (μb) | 120.7 (nb) |
| 28 | (n,np) | ( E-thr = 8.200 MeV ) | 294.7 (μb) | 125.1 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.45 MeV ) | 0.000 (b) | 14.81e-12 (b) | |||
| 102 | (n,γ) | 611.3 (mb) | 611.7 (mb) | 1.001 | 403.9 (mb) | 787.0 (μb) | 7.330 (mb) |
| 103 | (n,p) | ( E-thr = 3.001 MeV ) | 8.626 (mb) | 3.545 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.959 MeV ) | 2.200 (mb) | 550.0 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.146 MeV ) | 32.19 (μb) | 24.01 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 6.730 MeV ) | 409.5e-15 (b) | 1.110e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 65.58 (μb) | 3.704 (mb) | 4.666 (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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