| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 5.619 (b) | 6.210 (b) | 1.105 | − | 4.640 (b) | 5.523 (b) |
| 2 | (n,elastic) | 4.609 (b) | 5.201 (b) | 1.128 | − | 2.930 (b) | 4.759 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.268 MeV ) | 418.4 (mb) | 652.7 (mb) | |||
| 16 | (n,2n) | ( E-thr = 10.89 MeV ) | 1.143 (b) | 262.9 (μb) | |||
| 17 | (n,3n) | ( E-thr = 19.15 MeV ) | − | 1.922 (nb) | |||
| 22 | (n,na) | ( E-thr = 1.845 MeV ) | 17.91 (mb) | 4.523 (μb) | |||
| 28 | (n,np) | ( E-thr = 7.615 MeV ) | 80.86 (mb) | 11.38 (μb) | |||
| 102 | (n,γ) | 1.009 (b) | 1.009 (b) | 0.999 | 30.49 (b) | 1.115 (mb) | 109.5 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 3.825 (mb) | 33.71 (mb) | 182.0 (μb) |
| 104 | (n,d) | ( E-thr = 5.284 MeV ) | 1.223 (mb) | 289.5 (nb) | |||
| 105 | (n,t) | ( E-thr = 9.206 MeV ) | 57.09 (nb) | 6.497 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 5.211 MeV ) | 735.8e-12 (b) | 50.84e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.816 (mb) | 13.44 (mb) | 138.8 (μb) |
| 111 | (n,2p) | ( E-thr = 5.968 MeV ) | 105.1e-15 (b) | 167.4e-12 (b) | |||
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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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