| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 254.1 (kb) | 216.0 (kb) | 0.850 | − | 5.348 (b) | 6.708 (b) |
| 2 | (n,elastic) | 804.5 (b) | 740.0 (b) | 0.920 | − | 2.858 (b) | 4.163 (b) |
| 4 | (n,inelastic) | ( E-thr = 54.88 keV ) | 567.6 (mb) | 2.422 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.401 MeV ) | 1.918 (b) | 13.88 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.99 MeV ) | − | 2.601 (μb) | |||
| 22 | (n,na) | ( E-thr = 694.2 keV ) | 14.81 (μb) | 7.654 (nb) | |||
| 24 | (n,2na) | ( E-thr = 6.600 MeV ) | 139.9e-12 (b) | 6.697e-12 (b) | |||
| 28 | (n,np) | ( E-thr = 8.078 MeV ) | 18.06 (μb) | 17.65 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.22 MeV ) | 14.95e-18 (b) | 49.51e-12 (b) | |||
| 41 | (n,2np) | ( E-thr = 14.46 MeV ) | − | 429.8e-15 (b) | |||
| 102 | (n,γ) | 253.2 (kb) | 215.2 (kb) | 0.850 | 783.8 (b) | 952.1 (μb) | 110.4 (mb) |
| 103 | (n,p) | ( E-thr = 584.6 keV ) | 4.011 (mb) | 1.661 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.840 MeV ) | 398.0 (μb) | 85.18 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.923 MeV ) | 5.734 (μb) | 2.886 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.542 MeV ) | 181.6e-18 (b) | 10.09e-15 (b) | |||
| 107 | (n,a) | 422.3 (μb) | 360.6 (μb) | 0.854 | 7.030 (μb) | 1.176 (mb) | 534.8 (nb) |
|
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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