| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 21.68 (b) | 22.26 (b) | 1.027 | − | 4.780 (b) | 5.741 (b) |
| 2 | (n,elastic) | 4.253 (b) | 4.798 (b) | 1.128 | − | 2.795 (b) | 4.708 (b) |
| 4 | (n,inelastic) | ( E-thr = 17.84 keV ) | 422.2 (mb) | 964.5 (mb) | |||
| 16 | (n,2n) | ( E-thr = 6.264 MeV ) | 1.553 (b) | 4.560 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.04 MeV ) | − | 1.226 (μb) | |||
| 22 | (n,na) | ( E-thr = 5.288 MeV ) | 7.550 (nb) | 112.9e-12 (b) | |||
| 28 | (n,np) | ( E-thr = 7.851 MeV ) | 334.1 (μb) | 103.8 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.39 MeV ) | 0.000 (b) | 161.2e-12 (b) | |||
| 102 | (n,γ) | 17.41 (b) | 17.42 (b) | 1.001 | 57.29 (b) | 1.004 (mb) | 63.44 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 189.9 (μb) | 11.48 (mb) | 9.694 (μb) |
| 104 | (n,d) | ( E-thr = 5.609 MeV ) | 711.1 (μb) | 149.3 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.081 MeV ) | 33.80 (μb) | 8.184 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 12.48 MeV ) | 0.000 (b) | 25.75e-18 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 410.9 (nb) | 111.4 (μb) | 39.62 (nb) |
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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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