| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 20.19 (kb) | 26.99 (kb) | 1.336 | − | 4.589 (b) | 5.999 (b) |
| 2 | (n,elastic) | 25.26 (b) | 56.44 (b) | 2.235 | − | 2.564 (b) | 4.279 (b) |
| 4 | (n,inelastic) | ( E-thr = 265.9 keV ) | 258.5 (mb) | 1.662 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.599 MeV ) | 1.746 (b) | 7.503 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.08 MeV ) | − | 654.2 (nb) | |||
| 22 | (n,na) | ( E-thr = 3.902 MeV ) | 61.27 (μb) | 32.48 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.801 MeV ) | 55.55 (μb) | 91.25 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.09 MeV ) | − | 82.95e-12 (b) | |||
| 102 | (n,γ) | 20.17 (kb) | 26.93 (kb) | 1.335 | 388.1 (b) | 848.2 (μb) | 49.89 (mb) |
| 103 | (n,p) | ( E-thr = 1.245 MeV ) | 15.12 (mb) | 10.45 (μb) | |||
| 104 | (n,d) | ( E-thr = 7.556 MeV ) | 2.005 (mb) | 478.0 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.776 MeV ) | 28.50 (μb) | 21.26 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 9.994 MeV ) | 37.57e-18 (b) | 60.31e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 48.30 (μb) | 5.379 (mb) | 4.063 (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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