| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 27.08 (b) | 27.77 (b) | 1.026 | − | 4.837 (b) | 5.975 (b) |
| 2 | (n,elastic) | 5.065 (b) | 5.715 (b) | 1.128 | − | 2.723 (b) | 3.922 (b) |
| 4 | (n,inelastic) | ( E-thr = 39.89 keV ) | 244.6 (mb) | 2.004 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.963 MeV ) | 1.841 (b) | 6.056 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.65 MeV ) | − | 287.8 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.117 MeV ) | 139.8 (μb) | 42.50 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.313 MeV ) | 760.7 (μb) | 274.6 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.95 MeV ) | 878.1e-21 (b) | 93.56e-12 (b) | |||
| 102 | (n,γ) | 22.01 (b) | 22.05 (b) | 1.002 | 305.4 (b) | 1.018 (mb) | 42.12 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 854.2 (μb) | 26.34 (mb) | 55.65 (μb) |
| 104 | (n,d) | ( E-thr = 6.071 MeV ) | 1.250 (mb) | 261.2 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.644 MeV ) | 18.44 (μb) | 7.335 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.333 MeV ) | 1.200e-12 (b) | 429.1e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 132.4 (μb) | 3.048 (mb) | 14.06 (μb) |
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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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