| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.014 (b) | 6.500 (b) | 1.081 | − | 4.974 (b) | 5.888 (b) |
| 2 | (n,elastic) | 3.656 (b) | 4.127 (b) | 1.129 | − | 3.449 (b) | 4.786 (b) |
| 4 | (n,inelastic) | ( E-thr = 565.1 keV ) | 372.3 (mb) | 997.3 (mb) | |||
| 16 | (n,2n) | ( E-thr = 10.38 MeV ) | 1.090 (b) | 327.1 (μb) | |||
| 17 | (n,3n) | ( E-thr = 18.04 MeV ) | − | 68.16 (nb) | |||
| 22 | (n,na) | ( E-thr = 302.3 keV ) | 10.02 (mb) | 7.086 (μb) | |||
| 28 | (n,np) | ( E-thr = 7.275 MeV ) | 12.55 (mb) | 1.905 (μb) | |||
| 32 | (n,nd) | ( E-thr = 14.62 MeV ) | − | 2.198e-12 (b) | |||
| 102 | (n,γ) | 2.341 (b) | 2.342 (b) | 1.001 | 22.52 (b) | 1.054 (mb) | 101.5 (mb) |
| 103 | (n,p) | ( E-thr = 202.2 keV ) | 26.46 (mb) | 188.5 (μb) | |||
| 104 | (n,d) | ( E-thr = 4.946 MeV ) | 1.148 (mb) | 256.4 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.381 MeV ) | 5.147 (μb) | 9.909 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.645 MeV ) | 244.8e-12 (b) | 88.12e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 5.348 (mb) | 12.11 (mb) | 690.3 (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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