| Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|
| total | 5.851 (b) | 6.557 (b) | 1.121 | − | 3.717 (b) | 5.011 (b) |
| elastic | 5.471 (b) | 6.177 (b) | 1.129 | − | 2.001 (b) | 3.633 (b) |
| inelastic | ( E-thr = 153.0 keV ) | 658.7 (mb) | 1.357 (b) | |||
| (n,2n) | ( E-thr = 10.04 MeV ) | 1.017 (b) | 288.0 (μb) | |||
| (n,3n) | ( E-thr = 18.79 MeV ) | − | 508.4e-12 (b) | |||
| (n,na) | ( E-thr = 6.696 MeV ) | 5.167 (μb) | 12.06 (nb) | |||
| (n,np) | ( E-thr = 7.109 MeV ) | 12.58 (mb) | 8.270 (μb) | |||
| (n,nd) | ( E-thr = 15.50 MeV ) | − | 25.35e-12 (b) | |||
| capture | 380.0 (mb) | 380.1 (mb) | 1.000 | 7.074 (b) | 876.6 (μb) | 19.93 (mb) |
| (n,p) | 0.000 (b) | 0.000 (b) | − | 3.456 (mb) | 22.13 (mb) | 347.6 (μb) |
| (n,d) | ( E-thr = 4.858 MeV ) | 1.537 (mb) | 443.8 (nb) | |||
| (n,t) | ( E-thr = 9.172 MeV ) | 14.69 (μb) | 6.345 (nb) | |||
| (n,He-3) | ( E-thr = 10.14 MeV ) | 0.000 (b) | 1.772e-12 (b) | |||
| (n,a) | 0.000 (b) | 0.000 (b) | − | 76.35 (μb) | 3.851 (mb) | 3.565 (μb) |
| MT = 203 | 0.000 (b) | 0.000 (b) | − | 3.480 (mb) | 34.70 (mb) | 355.9 (μb) |
| MT = 204 | ( E-thr = 4.858 MeV ) | 1.537 (mb) | 443.9 (nb) | |||
| MT = 205 | ( E-thr = 9.172 MeV ) | 14.69 (μb) | 6.345 (nb) | |||
| MT = 206 | ( E-thr = 10.14 MeV ) | 0.000 (b) | 1.772e-12 (b) | |||
| MT = 207 | 0.000 (b) | 0.000 (b) | − | 76.35 (μb) | 3.856 (mb) | 3.577 (μb) |
|
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).
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 :
|