| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 2.475 (kb) | 3.306 (kb) | 1.336 | − | 4.488 (b) | 5.865 (b) |
| 2 | (n,elastic) | 7.545 (b) | 11.93 (b) | 1.581 | − | 2.443 (b) | 4.337 (b) |
| 4 | (n,inelastic) | ( E-thr = 247.6 keV ) | 416.3 (mb) | 1.483 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.599 MeV ) | 1.606 (b) | 2.409 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.97 MeV ) | − | 464.1 (nb) | |||
| 22 | (n,na) | ( E-thr = 1.648 MeV ) | 304.6 (μb) | 179.6 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.424 MeV ) | 1.755 (mb) | 542.9 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.79 MeV ) | 40.63e-33 (b) | 27.64e-12 (b) | |||
| 102 | (n,γ) | 2.468 (kb) | 3.294 (kb) | 1.335 | 66.59 (b) | 838.6 (μb) | 42.02 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 998.4 (μb) | 17.57 (mb) | 68.91 (μb) |
| 104 | (n,d) | ( E-thr = 5.178 MeV ) | 1.286 (mb) | 335.0 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.481 MeV ) | 6.488 (μb) | 9.107 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.646 MeV ) | 2.225 (nb) | 3.650e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 193.0 (μb) | 4.960 (mb) | 16.59 (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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