| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 2.549 (kb) | 3.403 (kb) | 1.335 | − | 4.480 (b) | 5.762 (b) |
| 2 | (n,elastic) | 7.718 (b) | 12.27 (b) | 1.590 | − | 2.522 (b) | 4.522 (b) |
| 4 | (n,inelastic) | ( E-thr = 247.6 keV ) | 408.5 (mb) | 1.189 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.607 MeV ) | 1.525 (b) | 2.892 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.98 MeV ) | − | 1.508 (μb) | |||
| 22 | (n,na) | ( E-thr = 1.643 MeV ) | 456.4 (μb) | 132.6 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.420 MeV ) | 2.953 (mb) | 585.6 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.72 MeV ) | 0.000 (b) | 26.75e-12 (b) | |||
| 102 | (n,γ) | 2.542 (kb) | 3.390 (kb) | 1.334 | 67.92 (b) | 1.058 (mb) | 47.93 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 631.9 (μb) | 17.21 (mb) | 44.47 (μb) |
| 104 | (n,d) | ( E-thr = 5.088 MeV ) | 149.5 (μb) | 46.11 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.474 MeV ) | 1.416 (μb) | 3.195 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.631 MeV ) | 301.1e-12 (b) | 3.352e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 682.9 (μb) | 3.522 (mb) | 83.14 (μb) |
| 111 | (n,2p) | ( E-thr = 5.270 MeV ) | 600.7 (nb) | 152.4e-12 (b) | |||
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These cross sections are calculated from JENDL-3.2 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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