| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.942 (b) | 7.641 (b) | 1.101 | − | 3.722 (b) | 4.637 (b) |
| 2 | (n,elastic) | 5.366 (b) | 6.058 (b) | 1.129 | − | 2.034 (b) | 3.374 (b) |
| 4 | (n,inelastic) | ( E-thr = 493.9 keV ) | 450.9 (mb) | 1.222 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.753 MeV ) | 1.189 (b) | 1.063 (mb) | |||
| 17 | (n,3n) | ( E-thr = 19.36 MeV ) | − | 24.56e-12 (b) | |||
| 22 | (n,na) | ( E-thr = 7.766 MeV ) | 247.5 (nb) | 7.298 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.656 MeV ) | 5.570 (mb) | 1.133 (μb) | |||
| 32 | (n,nd) | ( E-thr = 13.61 MeV ) | 0.000 (b) | 311.6e-12 (b) | |||
| 102 | (n,γ) | 1.563 (b) | 1.564 (b) | 1.000 | 24.61 (b) | 1.108 (mb) | 39.30 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 4.916 (mb) | 38.36 (mb) | 655.3 (μb) |
| 104 | (n,d) | ( E-thr = 6.405 MeV ) | 815.4 (μb) | 193.7 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.279 MeV ) | 2.587 (μb) | 2.969 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 11.95 MeV ) | 0.000 (b) | 72.30e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 114.2 (μb) | 2.007 (mb) | 4.864 (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).
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 :
|