| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 13.16 (b) | 13.83 (b) | 1.051 | − | 4.536 (b) | 5.610 (b) |
| 2 | (n,elastic) | 5.126 (b) | 5.784 (b) | 1.128 | − | 2.829 (b) | 3.799 (b) |
| 4 | (n,inelastic) | ( E-thr = 2.726 keV ) | 153.5 (mb) | 1.762 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.298 MeV ) | 1.540 (b) | 14.13 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.61 MeV ) | − | 1.527 (μb) | |||
| 22 | (n,na) | ( E-thr = 3.750 MeV ) | 76.73 (μb) | 28.30 (nb) | |||
| 28 | (n,np) | ( E-thr = 10.05 MeV ) | 17.31 (μb) | 27.25 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.13 MeV ) | − | 163.6e-12 (b) | |||
| 102 | (n,γ) | 8.003 (b) | 8.003 (b) | 1.000 | 91.14 (b) | 1.000 (mb) | 32.59 (mb) |
| 103 | (n,p) | ( E-thr = 1.584 MeV ) | 9.826 (mb) | 6.167 (μb) | |||
| 104 | (n,d) | ( E-thr = 7.720 MeV ) | 292.0 (μb) | 83.63 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.885 MeV ) | 13.59 (μb) | 12.36 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 31.00 (μb) | 2.443 (mb) | 2.383 (μb) |
|
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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