| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 9.172 (kb) | 8.260 (kb) | 0.901 | − | 5.200 (b) | 6.840 (b) |
| 2 | (n,elastic) | 3.202 (b) | 3.024 (b) | 0.944 | − | 2.876 (b) | 4.849 (b) |
| 4 | (n,inelastic) | ( E-thr = 21.64 keV ) | 592.3 (mb) | 1.616 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.035 MeV ) | 1.710 (b) | 2.593 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.51 MeV ) | − | 3.314 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 0.000 (b) | 1.423 (mb) | 381.3 (nb) |
| 28 | (n,np) | ( E-thr = 4.918 MeV ) | 2.854 (mb) | 1.140 (μb) | |||
| 102 | (n,γ) | 9.169 (kb) | 8.257 (kb) | 0.901 | 3.108 (kb) | 1.013 (mb) | 370.4 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 514.8 (μb) | 7.479 (mb) | 34.39 (μb) |
| 107 | (n,a) | 8.806 (μb) | 7.948 (μb) | 0.903 | 888.4 (μb) | 8.881 (mb) | 72.71 (μb) |
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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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