| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 1.671 (b) | 1.855 (b) | 1.110 | − | 1.720 (b) | 3.259 (b) |
| 2 | (n,elastic) | 1.441 (b) | 1.626 (b) | 1.129 | − | 788.5 (mb) | 2.966 (b) |
| 4 | (n,inelastic) | ( E-thr = 875.3 keV ) | 443.5 (mb) | 287.2 (mb) | |||
| 16 | (n,2n) | ( E-thr = 13.55 MeV ) | 5.385 (mb) | 2.679 (μb) | |||
| 22 | (n,na) | ( E-thr = 10.47 MeV ) | 2.428 (mb) | 1.440 (μb) | |||
| 28 | (n,np) | ( E-thr = 8.581 MeV ) | 279.7 (mb) | 96.50 (μb) | |||
| 102 | (n,γ) | 230.3 (mb) | 228.8 (mb) | 0.993 | 122.9 (mb) | 253.2 (μb) | 670.4 (μb) |
| 103 | (n,p) | ( E-thr = 1.896 MeV ) | 77.96 (mb) | 4.284 (mb) | |||
| 107 | (n,a) | ( E-thr = 3.249 MeV ) | 122.2 (mb) | 687.7 (μb) | |||
| 111 | (n,2p) | ( E-thr = 16.80 MeV ) | − | 1.172e-12 (b) | |||
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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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