| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 5.573 (b) | 6.283 (b) | 1.127 | − | 4.526 (b) | 6.055 (b) |
| 2 | (n,elastic) | 5.498 (b) | 6.208 (b) | 1.129 | − | 2.437 (b) | 4.525 (b) |
| 4 | (n,inelastic) | ( E-thr = 518.0 keV ) | 382.2 (mb) | 1.513 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.776 MeV ) | 1.707 (b) | 2.070 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.97 MeV ) | − | 1.664 (μb) | |||
| 22 | (n,na) | ( E-thr = 4.850 MeV ) | 2.038 (μb) | 2.575 (nb) | |||
| 28 | (n,np) | ( E-thr = 11.12 MeV ) | 318.3 (nb) | 16.26 (nb) | |||
| 32 | (n,nd) | ( E-thr = 17.05 MeV ) | − | 1.290e-15 (b) | |||
| 102 | (n,γ) | 74.86 (mb) | 74.91 (mb) | 1.001 | 1.668 (b) | 741.2 (μb) | 14.00 (mb) |
| 103 | (n,p) | ( E-thr = 5.416 MeV ) | 2.968 (mb) | 734.0 (nb) | |||
| 104 | (n,d) | ( E-thr = 8.873 MeV ) | 7.197 (μb) | 37.90 (nb) | |||
| 105 | (n,t) | ( E-thr = 10.74 MeV ) | 3.556 (nb) | 1.560 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 12.19 MeV ) | 17.72e-27 (b) | 1.188e-18 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 205.4 (nb) | 127.9 (μb) | 41.27 (nb) |
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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 :
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