| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.466 (b) | 3.840 (b) | 1.108 | − | 4.915 (b) | 6.439 (b) |
| 2 | (n,elastic) | 2.894 (b) | 3.267 (b) | 1.129 | − | 2.696 (b) | 5.505 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.608 MeV ) | 584.0 (mb) | 924.2 (mb) | |||
| 16 | (n,2n) | ( E-thr = 9.268 MeV ) | 1.624 (b) | 1.019 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.78 MeV ) | − | 80.30 (nb) | |||
| 22 | (n,na) | ( E-thr = 1.633 MeV ) | 120.7 (μb) | 38.13 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.200 MeV ) | 327.7 (μb) | 135.5 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.80 MeV ) | − | 2.995e-12 (b) | |||
| 102 | (n,γ) | 570.4 (mb) | 570.7 (mb) | 1.001 | 344.6 (mb) | 788.3 (μb) | 7.525 (mb) |
| 103 | (n,p) | ( E-thr = 3.001 MeV ) | 9.145 (mb) | 3.833 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.959 MeV ) | 2.164 (mb) | 551.6 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.498 MeV ) | 10.79 (μb) | 18.18 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 6.730 MeV ) | 463.0e-15 (b) | 1.236e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 58.06 (μb) | 3.595 (mb) | 4.082 (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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