| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 1.404 (kb) | 1.406 (kb) | 1.001 | − | 4.773 (b) | 6.481 (b) |
| 2 | (n,elastic) | 3.211 (b) | 3.623 (b) | 1.128 | − | 2.931 (b) | 4.257 (b) |
| 4 | (n,inelastic) | ( E-thr = 115.1 keV ) | 182.6 (mb) | 2.123 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.318 MeV ) | 1.591 (b) | 5.999 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.26 MeV ) | 60.16 (mb) | 25.62 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 2.886 (μb) | 386.3 (μb) | 191.7 (nb) |
| 28 | (n,np) | ( E-thr = 5.990 MeV ) | 594.0 (μb) | 140.1 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.05 MeV ) | 2.491e-15 (b) | 2.499 (nb) | |||
| 33 | (n,nt) | ( E-thr = 10.16 MeV ) | 3.090e-12 (b) | 2.324 (nb) | |||
| 102 | (n,γ) | 1.401 (kb) | 1.401 (kb) | 1.000 | 1.577 (kb) | 1.000 (mb) | 94.65 (mb) |
| 103 | (n,p) | ( E-thr = 912.7 keV ) | 3.550 (mb) | 1.339 (μb) | |||
| 104 | (n,d) | ( E-thr = 3.664 MeV ) | 625.8 (μb) | 148.4 (nb) | |||
| 105 | (n,t) | ( E-thr = 4.826 MeV ) | 186.6 (μb) | 50.04 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 34.41 (μb) | 1.526 (mb) | 2.787 (μb) |
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These cross sections are calculated from JENDL-3.3 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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