| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 38.26 (b) | 39.26 (b) | 1.026 | − | 4.639 (b) | 5.523 (b) |
| 2 | (n,elastic) | 8.407 (b) | 9.476 (b) | 1.127 | − | 2.918 (b) | 4.328 (b) |
| 4 | (n,inelastic) | ( E-thr = 501.7 keV ) | 232.0 (mb) | 1.109 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.617 MeV ) | 1.458 (b) | 3.409 (mb) | |||
| 17 | (n,3n) | ( E-thr = 18.01 MeV ) | − | 67.43 (nb) | |||
| 22 | (n,na) | ( E-thr = 3.231 MeV ) | 414.2 (μb) | 114.4 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.830 MeV ) | 52.57 (μb) | 95.63 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.84 MeV ) | 0.000 (b) | 38.64e-12 (b) | |||
| 102 | (n,γ) | 29.86 (b) | 29.78 (b) | 0.998 | 13.81 (b) | 1.003 (mb) | 79.56 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 865.6 (μb) | 24.91 (mb) | 49.66 (μb) |
| 104 | (n,d) | ( E-thr = 6.499 MeV ) | 816.2 (μb) | 180.8 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.604 MeV ) | 2.678 (μb) | 10.72 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.909 MeV ) | 736.4e-18 (b) | 5.495e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 244.6 (μb) | 4.739 (mb) | 29.81 (μb) |
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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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