| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 2.527 (b) | 2.616 (b) | 1.035 | − | 2.420 (b) | 3.524 (b) |
| 2 | (n,elastic) | 696.4 (mb) | 785.8 (mb) | 1.128 | − | 1.106 (b) | 3.029 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.410 MeV ) | 391.8 (mb) | 490.3 (mb) | |||
| 16 | (n,2n) | ( E-thr = 8.311 MeV ) | 864.3 (mb) | 729.1 (μb) | |||
| 22 | (n,na) | ( E-thr = 10.39 MeV ) | 840.8 (nb) | 17.04 (nb) | |||
| 28 | (n,np) | ( E-thr = 11.59 MeV ) | 1.104 (mb) | 667.1 (nb) | |||
| 102 | (n,γ) | 1.830 (b) | 1.830 (b) | 1.000 | 891.5 (mb) | 817.0 (μb) | 3.595 (mb) |
| 103 | (n,p) | ( E-thr = 1.248 MeV ) | 34.93 (mb) | 790.2 (μb) | |||
| 104 | (n,d) | ( E-thr = 9.315 MeV ) | 649.7 (μb) | 131.2 (nb) | |||
| 105 | (n,t) | ( E-thr = 11.34 MeV ) | 2.813 (μb) | 5.428 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 13.34 MeV ) | 0.000 (b) | 3.755e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 3.259 (mb) | 21.17 (mb) | 173.4 (μb) |
| 111 | (n,2p) | ( E-thr = 11.07 MeV ) | 34.49 (nb) | 66.36e-12 (b) | |||
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These cross sections are calculated from JENDL-3.3 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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