| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 419.0 (b) | 423.9 (b) | 1.012 | − | 4.975 (b) | 5.882 (b) |
| 2 | (n,elastic) | 592.3 (mb) | 695.0 (mb) | 1.173 | − | 3.453 (b) | 4.298 (b) |
| 4 | (n,inelastic) | ( E-thr = 160.3 keV ) | 191.7 (mb) | 1.462 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.995 MeV ) | 1.315 (b) | 5.691 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.95 MeV ) | − | 354.9 (nb) | |||
| 22 | (n,na) | ( E-thr = 1.533 MeV ) | 296.7 (μb) | 77.81 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.203 MeV ) | 129.0 (μb) | 56.23 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.74 MeV ) | 0.000 (b) | 337.2e-12 (b) | |||
| 102 | (n,γ) | 418.4 (b) | 423.2 (b) | 1.011 | 5.648 (kb) | 1.002 (mb) | 115.9 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 285.1 (μb) | 9.255 (mb) | 15.50 (μb) |
| 104 | (n,d) | ( E-thr = 5.874 MeV ) | 1.072 (mb) | 228.3 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.505 MeV ) | 22.83 (μb) | 14.65 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 6.876 MeV ) | 121.9e-15 (b) | 13.33e-12 (b) | |||
| 107 | (n,a) | 46.21 (μb) | 46.91 (μb) | 1.015 | 1.166 (mb) | 4.451 (mb) | 100.4 (μb) |
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These cross sections are calculated from JENDL-3.3 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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