| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 29.83 (b) | 31.69 (b) | 1.062 | − | 5.326 (b) | 6.970 (b) |
| 2 | (n,elastic) | 14.33 (b) | 16.17 (b) | 1.129 | − | 2.690 (b) | 4.115 (b) |
| 4 | (n,inelastic) | ( E-thr = 79.11 keV ) | 430.2 (mb) | 2.769 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.404 MeV ) | 2.197 (b) | 15.73 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.47 MeV ) | − | 5.411 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 0.000 (b) | 83.07 (μb) | 26.23 (nb) |
| 28 | (n,np) | ( E-thr = 7.509 MeV ) | 31.98 (μb) | 29.05 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.54 MeV ) | 0.000 (b) | 121.2e-12 (b) | |||
| 102 | (n,γ) | 15.50 (b) | 15.52 (b) | 1.001 | 384.6 (b) | 758.6 (μb) | 70.50 (mb) |
| 103 | (n,p) | ( E-thr = 518.1 keV ) | 5.147 (mb) | 2.467 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.271 MeV ) | 1.025 (mb) | 248.4 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.250 MeV ) | 126.0 (μb) | 35.92 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 6.730 MeV ) | 0.000 (b) | 130.1e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 37.47 (μb) | 1.968 (mb) | 2.451 (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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