| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 2.974 (kb) | 2.976 (kb) | 1.001 | − | 5.233 (b) | 6.904 (b) |
| 2 | (n,elastic) | 323.0 (b) | 356.5 (b) | 1.104 | − | 2.617 (b) | 4.327 (b) |
| 4 | (n,inelastic) | ( E-thr = 73.84 keV ) | 506.7 (mb) | 2.545 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.705 MeV ) | 2.111 (b) | 6.471 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.01 MeV ) | − | 8.549 (μb) | |||
| 22 | (n,na) | ( E-thr = 452.4 keV ) | 158.0 (μb) | 53.96 (nb) | |||
| 24 | (n,2na) | ( E-thr = 7.950 MeV ) | 10.30e-12 (b) | 23.99e-12 (b) | |||
| 28 | (n,np) | ( E-thr = 8.714 MeV ) | 3.228 (μb) | 8.839 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.51 MeV ) | 1.836e-21 (b) | 2.176e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.54 MeV ) | 257.6e-27 (b) | 202.0e-15 (b) | |||
| 102 | (n,γ) | 2.651 (kb) | 2.620 (kb) | 0.988 | 341.2 (b) | 1.023 (mb) | 24.86 (mb) |
| 103 | (n,p) | ( E-thr = 3.127 MeV ) | 1.637 (mb) | 408.1 (nb) | |||
| 104 | (n,d) | ( E-thr = 6.476 MeV ) | 73.39 (μb) | 23.70 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.215 MeV ) | 1.166 (μb) | 1.181 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.598 MeV ) | 67.74e-21 (b) | 95.94e-18 (b) | |||
| 107 | (n,a) | 283.4 (nb) | 283.6 (nb) | 1.001 | 20.87 (μb) | 981.1 (μb) | 1.598 (μb) |
|
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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