| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 9.471 (b) | 10.31 (b) | 1.089 | − | 5.997 (b) | 7.999 (b) |
| 2 | (n,elastic) | 6.528 (b) | 7.364 (b) | 1.128 | − | 2.625 (b) | 4.838 (b) |
| 4 | (n,inelastic) | ( E-thr = 43.56 keV ) | 565.0 (mb) | 1.822 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.224 MeV ) | 446.9 (mb) | 3.634 (mb) | |||
| 17 | (n,3n) | ( E-thr = 11.40 MeV ) | 98.85 (mb) | 14.91 (μb) | |||
| 18 | (n,fission) | 371.9 (mb) | 371.9 (mb) | 1.000 | 8.434 (b) | 2.260 (b) | 1.261 (b) |
| 102 | (n,γ) | 2.571 (b) | 2.577 (b) | 1.002 | 267.1 (b) | 861.0 (μb) | 72.51 (mb) |
|
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 :
|