| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 219.5 (b) | 224.2 (b) | 1.021 | − | 5.884 (b) | 7.889 (b) |
| 2 | (n,elastic) | 11.32 (b) | 12.79 (b) | 1.130 | − | 2.810 (b) | 4.471 (b) |
| 4 | (n,inelastic) | ( E-thr = 34.38 keV ) | 325.5 (mb) | 1.081 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.013 MeV ) | 293.0 (mb) | 677.1 (μb) | |||
| 17 | (n,3n) | ( E-thr = 13.10 MeV ) | 412.9 (μb) | 375.1 (nb) | |||
| 18 | (n,fission) | 53.02 (b) | 53.78 (b) | 1.014 | 302.6 (b) | 2.452 (b) | 2.203 (b) |
| 19 | (n,f) | 53.02 (b) | 53.78 (b) | 1.014 | 302.3 (b) | 1.590 (b) | 2.188 (b) |
| 20 | (n,nf) | ( E-thr = 2.300 MeV ) | 852.7 (mb) | 14.78 (mb) | |||
| 21 | (n,2nf) | ( E-thr = 10.00 MeV ) | 10.70 (mb) | 3.153 (μb) | |||
| 38 | (n,3nf) | ( E-thr = 13.50 MeV ) | 9.425e-12 (b) | 12.73 (nb) | |||
| 102 | (n,γ) | 155.1 (b) | 157.2 (b) | 1.014 | 813.7 (b) | 1.298 (mb) | 129.7 (mb) |
| 456 | νp | 2.632 | − | − | − | 4.591 | − |
| 455 | νd | 4.850e-3 | − | − | − | 4.317e-3 | − |
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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 :
νp,
νd
: numbers of prompt and delayed neutrons per fission.
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