| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.028 (b) | 6.681 (b) | 1.108 | − | 4.272 (b) | 5.773 (b) |
| 2 | (n,elastic) | 5.058 (b) | 5.711 (b) | 1.129 | − | 2.348 (b) | 4.480 (b) |
| 4 | (n,inelastic) | ( E-thr = 638.7 keV ) | 639.1 (mb) | 1.148 (b) | |||
| 16 | (n,2n) | ( E-thr = 10.98 MeV ) | 921.2 (mb) | 219.0 (μb) | |||
| 17 | (n,3n) | ( E-thr = 19.48 MeV ) | − | 13.34e-12 (b) | |||
| 22 | (n,na) | ( E-thr = 1.648 MeV ) | 13.57 (mb) | 9.928 (μb) | |||
| 28 | (n,np) | ( E-thr = 7.424 MeV ) | 103.5 (mb) | 28.35 (μb) | |||
| 32 | (n,nd) | ( E-thr = 15.30 MeV ) | − | 11.57e-12 (b) | |||
| 102 | (n,γ) | 969.8 (mb) | 970.1 (mb) | 1.000 | 9.139 (b) | 2.522 (mb) | 140.3 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 54.49 (mb) | 168.7 (mb) | 4.109 (mb) |
| 104 | (n,d) | ( E-thr = 5.178 MeV ) | 8.471 (mb) | 1.963 (μb) | |||
| 105 | (n,t) | ( E-thr = 8.984 MeV ) | 12.83 (μb) | 23.31 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.646 MeV ) | 177.7 (nb) | 259.6e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 9.255 (mb) | 69.88 (mb) | 877.1 (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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