| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 7.602 (b) | 7.838 (b) | 1.031 | − | 5.078 (b) | 6.264 (b) |
| 2 | (n,elastic) | 1.805 (b) | 2.037 (b) | 1.129 | − | 2.909 (b) | 4.971 (b) |
| 4 | (n,inelastic) | ( E-thr = 222.7 keV ) | 548.4 (mb) | 1.187 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.030 MeV ) | 1.611 (b) | 4.928 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.58 MeV ) | − | 545.1 (nb) | |||
| 22 | (n,na) | ( E-thr = 1.885 MeV ) | 71.94 (μb) | 23.92 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.316 MeV ) | 62.71 (μb) | 39.24 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.94 MeV ) | 0.000 (b) | 265.3e-12 (b) | |||
| 102 | (n,γ) | 5.798 (b) | 5.802 (b) | 1.001 | 131.3 (b) | 1.002 (mb) | 95.90 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 146.7 (μb) | 5.180 (mb) | 7.751 (μb) |
| 104 | (n,d) | ( E-thr = 5.989 MeV ) | 963.2 (μb) | 214.8 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.705 MeV ) | 20.57 (μb) | 17.99 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.117 MeV ) | 21.80e-15 (b) | 6.181e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 68.48 (μb) | 2.236 (mb) | 9.317 (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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