| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 7.828 (b) | 8.666 (b) | 1.107 | − | 2.660 (b) | 3.828 (b) |
| 2 | (n,elastic) | 6.528 (b) | 7.366 (b) | 1.128 | − | 1.267 (b) | 3.200 (b) |
| 4 | (n,inelastic) | ( E-thr = 824.9 keV ) | 419.8 (mb) | 626.4 (mb) | |||
| 16 | (n,2n) | ( E-thr = 10.22 MeV ) | 946.7 (mb) | 321.8 (μb) | |||
| 22 | (n,na) | ( E-thr = 7.781 MeV ) | 411.3 (μb) | 248.0 (nb) | |||
| 28 | (n,np) | ( E-thr = 12.03 MeV ) | 80.31 (μb) | 136.8 (nb) | |||
| 102 | (n,γ) | 1.300 (b) | 1.301 (b) | 1.000 | 1.357 (b) | 1.025 (mb) | 1.829 (mb) |
| 103 | (n,p) | ( E-thr = 5.405 MeV ) | 12.62 (mb) | 11.21 (μb) | |||
| 107 | (n,a) | ( E-thr = 1.412 MeV ) | 11.74 (mb) | 23.91 (μb) | |||
|
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 :
|