| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 7.149 (b) | 7.901 (b) | 1.105 | − | 4.337 (b) | 5.661 (b) |
| 2 | (n,elastic) | 5.733 (b) | 6.468 (b) | 1.128 | − | 2.835 (b) | 4.567 (b) |
| 4 | (n,inelastic) | ( E-thr = 561.8 keV ) | 220.7 (mb) | 1.078 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.033 MeV ) | 1.264 (b) | 2.763 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.97 MeV ) | − | 2.208 (μb) | |||
| 22 | (n,na) | ( E-thr = 4.222 MeV ) | 408.9 (μb) | 102.8 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.794 MeV ) | 2.226 (mb) | 438.0 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.35 MeV ) | 0.000 (b) | 2.022 (nb) | |||
| 33 | (n,nt) | ( E-thr = 13.54 MeV ) | 0.000 (b) | 504.8e-12 (b) | |||
| 102 | (n,γ) | 1.401 (b) | 1.400 (b) | 1.000 | 2.842 (b) | 1.006 (mb) | 12.24 (mb) |
| 103 | (n,p) | ( E-thr = 1.922 MeV ) | 9.747 (mb) | 10.44 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.458 MeV ) | 1.096 (mb) | 243.5 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.099 MeV ) | 160.2 (μb) | 49.83 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 69.58 (μb) | 2.984 (mb) | 3.300 (μb) |
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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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