| Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|
| total | 6.931 (b) | 7.765 (b) | 1.120 | − | 4.535 (b) | 5.614 (b) |
| elastic | 6.462 (b) | 7.296 (b) | 1.129 | − | 2.533 (b) | 4.210 (b) |
| inelastic | ( E-thr = 361.5 keV ) | 404.3 (mb) | 1.366 (b) | |||
| (n,2n) | ( E-thr = 9.000 MeV ) | 1.589 (b) | 2.001 (mb) | |||
| (n,3n) | ( E-thr = 15.30 MeV ) | − | 3.061 (μb) | |||
| (n,na) | ( E-thr = 4.374 MeV ) | 71.85 (μb) | 27.87 (nb) | |||
| (n,np) | ( E-thr = 10.58 MeV ) | 3.100 (μb) | 7.621 (nb) | |||
| capture | 469.1 (mb) | 469.4 (mb) | 1.001 | 6.622 (b) | 1.093 (mb) | 32.00 (mb) |
| (n,p) | ( E-thr = 4.661 MeV ) | 5.496 (mb) | 1.560 (μb) | |||
| (n,d) | ( E-thr = 8.252 MeV ) | 5.564 (μb) | 11.20 (nb) | |||
| (n,t) | ( E-thr = 10.47 MeV ) | 32.42 (nb) | 1.676 (nb) | |||
| (n,a) | 0.000 (b) | 0.000 (b) | − | 11.17 (μb) | 1.988 (mb) | 820.9 (nb) |
|
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 :
|