| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.767 (kb) | 3.852 (kb) | 1.023 | − | 5.404 (b) | 6.701 (b) |
| 2 | (n,elastic) | 6.601 (b) | 8.703 (b) | 1.318 | − | 2.947 (b) | 4.048 (b) |
| 4 | (n,inelastic) | ( E-thr = 79.15 keV ) | 531.3 (mb) | 2.567 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.204 MeV ) | 1.919 (b) | 3.631 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.69 MeV ) | − | 3.272 (μb) | |||
| 22 | (n,na) | ( E-thr = 859.7 keV ) | 10.68 (μb) | 3.795 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.695 MeV ) | 278.0 (μb) | 95.91 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.48 MeV ) | 209.7e-21 (b) | 49.37e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 12.08 MeV ) | 426.4e-21 (b) | 8.024e-12 (b) | |||
| 41 | (n,2np) | ( E-thr = 14.71 MeV ) | − | 1.949e-12 (b) | |||
| 102 | (n,γ) | 3.761 (kb) | 3.843 (kb) | 1.022 | 15.51 (kb) | 789.2 (μb) | 82.00 (mb) |
| 103 | (n,p) | ( E-thr = 850.4 keV ) | 5.081 (mb) | 2.075 (μb) | |||
| 104 | (n,d) | ( E-thr = 4.456 MeV ) | 507.8 (μb) | 104.3 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.177 MeV ) | 2.754 (μb) | 1.910 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.052 MeV ) | 53.85e-18 (b) | 7.325e-15 (b) | |||
| 107 | (n,a) | 165.8e-12 (b) | 166.1e-12 (b) | 1.002 | 1.518 (μb) | 311.4 (μb) | 132.0 (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 :
|