| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 26.35 (b) | 27.14 (b) | 1.030 | − | 5.370 (b) | 7.000 (b) |
| 2 | (n,elastic) | 5.666 (b) | 6.388 (b) | 1.127 | − | 2.991 (b) | 4.614 (b) |
| 4 | (n,inelastic) | ( E-thr = 6.235 keV ) | 241.9 (mb) | 2.295 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.686 MeV ) | 2.133 (b) | 5.149 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.30 MeV ) | − | 6.300 (μb) | |||
| 28 | (n,np) | ( E-thr = 5.968 MeV ) | 163.1 (μb) | 55.01 (nb) | |||
| 102 | (n,γ) | 20.68 (b) | 20.75 (b) | 1.003 | 660.0 (b) | 205.5 (nb) | 85.64 (mb) |
| 103 | (n,p) | ( E-thr = 241.9 keV ) | 3.723 (mb) | 2.305 (μb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.156 (μb) | 116.4 (μb) | 90.68 (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).
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 :
|