| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 4.000 (b) | 4.482 (b) | 1.121 | − | 4.879 (b) | 5.998 (b) |
| 2 | (n,elastic) | 3.735 (b) | 4.217 (b) | 1.129 | − | 2.774 (b) | 4.839 (b) |
| 4 | (n,inelastic) | ( E-thr = 853.4 keV ) | 266.3 (mb) | 1.151 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.617 MeV ) | 1.830 (b) | 2.371 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.10 MeV ) | − | 1.139 (μb) | |||
| 22 | (n,na) | ( E-thr = 3.222 MeV ) | 46.15 (μb) | 18.17 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.599 MeV ) | 25.28 (μb) | 46.44 (nb) | |||
| 32 | (n,nd) | ( E-thr = 15.68 MeV ) | − | 190.9e-15 (b) | |||
| 102 | (n,γ) | 265.1 (mb) | 265.2 (mb) | 1.000 | 595.5 (mb) | 900.2 (μb) | 5.444 (mb) |
| 103 | (n,p) | ( E-thr = 3.294 MeV ) | 7.722 (mb) | 3.168 (μb) | |||
| 104 | (n,d) | ( E-thr = 7.357 MeV ) | 60.09 (μb) | 28.15 (nb) | |||
| 105 | (n,t) | ( E-thr = 9.373 MeV ) | 97.80 (nb) | 726.0e-12 (b) | |||
| 106 | (n,He-3) | ( E-thr = 9.876 MeV ) | 8.796e-18 (b) | 2.802e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 7.030 (μb) | 393.5 (μb) | 364.6 (nb) |
|
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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