| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 15.79 (b) | 16.42 (b) | 1.040 | − | 4.515 (b) | 5.789 (b) |
| 2 | (n,elastic) | 3.699 (b) | 4.172 (b) | 1.128 | − | 2.503 (b) | 4.564 (b) |
| 4 | (n,inelastic) | ( E-thr = 395.2 keV ) | 487.9 (mb) | 1.080 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.529 MeV ) | 1.475 (b) | 814.5 (μb) | |||
| 17 | (n,3n) | ( E-thr = 17.27 MeV ) | − | 74.04 (nb) | |||
| 22 | (n,na) | ( E-thr = 3.099 MeV ) | 88.66 (μb) | 34.32 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.132 MeV ) | 5.095 (mb) | 1.543 (μb) | |||
| 32 | (n,nd) | ( E-thr = 13.37 MeV ) | 18.54e-27 (b) | 80.38e-12 (b) | |||
| 102 | (n,γ) | 12.09 (b) | 12.24 (b) | 1.013 | 325.4 (b) | 1.136 (mb) | 140.5 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 1.567 (mb) | 39.60 (mb) | 89.52 (μb) |
| 104 | (n,d) | ( E-thr = 3.888 MeV ) | 2.970 (mb) | 649.1 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.053 MeV ) | 19.01 (μb) | 9.171 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.080 MeV ) | 12.31e-12 (b) | 1.218e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 77.50 (μb) | 3.823 (mb) | 4.460 (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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