| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 7.988 (b) | 8.742 (b) | 1.094 | − | 4.340 (b) | 5.669 (b) |
| 2 | (n,elastic) | 5.888 (b) | 6.643 (b) | 1.128 | − | 2.553 (b) | 4.104 (b) |
| 4 | (n,inelastic) | ( E-thr = 485.9 keV ) | 349.9 (mb) | 1.518 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.887 MeV ) | 1.412 (b) | 4.272 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.14 MeV ) | − | 548.0 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.851 MeV ) | 563.5 (μb) | 145.6 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.316 MeV ) | 584.4 (μb) | 212.4 (nb) | |||
| 102 | (n,γ) | 2.100 (b) | 2.098 (b) | 0.999 | 17.13 (b) | 1.001 (mb) | 41.44 (mb) |
| 103 | (n,p) | ( E-thr = 1.162 MeV ) | 14.80 (mb) | 15.43 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.992 MeV ) | 658.5 (μb) | 139.4 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.712 MeV ) | 15.09 (μb) | 10.52 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.828 MeV ) | 154.6e-15 (b) | 6.935e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 722.6 (μb) | 6.881 (mb) | 91.48 (μb) |
|
These cross sections are calculated from JENDL-3.2 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 :
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