| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 5.924 (b) | 6.549 (b) | 1.106 | − | 4.697 (b) | 5.818 (b) |
| 2 | (n,elastic) | 4.843 (b) | 5.468 (b) | 1.129 | − | 2.709 (b) | 4.313 (b) |
| 4 | (n,inelastic) | ( E-thr = 105.0 keV ) | 324.9 (mb) | 1.449 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.003 MeV ) | 1.647 (b) | 4.289 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.65 MeV ) | − | 166.3 (nb) | |||
| 22 | (n,na) | ( E-thr = 3.808 MeV ) | 61.56 (μb) | 22.90 (nb) | |||
| 24 | (n,2na) | ( E-thr = 10.40 MeV ) | 37.93e-18 (b) | 1.724e-12 (b) | |||
| 28 | (n,np) | ( E-thr = 9.520 MeV ) | 76.33 (μb) | 67.62 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.12 MeV ) | − | 14.98e-12 (b) | |||
| 41 | (n,2np) | ( E-thr = 16.36 MeV ) | − | 181.4e-15 (b) | |||
| 102 | (n,γ) | 1.080 (b) | 1.081 (b) | 1.000 | 17.94 (b) | 1.018 (mb) | 49.95 (mb) |
| 103 | (n,p) | ( E-thr = 678.4 keV ) | 15.34 (mb) | 15.67 (μb) | |||
| 104 | (n,d) | ( E-thr = 7.277 MeV ) | 337.5 (μb) | 80.51 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.809 MeV ) | 942.1 (nb) | 1.522 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 9.248 MeV ) | 758.8e-18 (b) | 19.95e-15 (b) | |||
| 107 | (n,a) | 32.06 (nb) | 32.08 (nb) | 1.001 | 61.48 (μb) | 1.742 (mb) | 4.769 (μb) |
|
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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