| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 72.44 (b) | 72.62 (b) | 1.002 | − | 1.468 (b) | 1.849 (b) |
| 2 | (n,elastic) | 1.024 (b) | 1.154 (b) | 1.127 | − | 1.016 (b) | 1.642 (b) |
| 4 | (n,inelastic) | ( E-thr = 546.3 keV ) | 368.6 (mb) | 181.6 (mb) | |||
| 16 | (n,2n) | ( E-thr = 6.614 MeV ) | 70.69 (mb) | 50.06 (μb) | |||
| 102 | (n,γ) | 44.88 (mb) | 44.90 (mb) | 1.001 | 20.21 (mb) | 8.014 (μb) | 8.513 (μb) |
| 103 | (n,p) | ( E-thr = 3.185 MeV ) | 513.5 (μb) | 323.6 (μb) | |||
| 104 | (n,d) | ( E-thr = 8.868 MeV ) | 9.022 (mb) | 10.15 (μb) | |||
| 105 | (n,t) | 71.37 (b) | 71.41 (b) | 1.001 | 32.27 (b) | 2.129 (mb) | 25.10 (mb) |
|
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 :
|