| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 64.15 (b) | 66.72 (b) | 1.040 | − | 4.931 (b) | 6.713 (b) |
| 2 | (n,elastic) | 20.29 (b) | 22.87 (b) | 1.127 | − | 2.644 (b) | 4.866 (b) |
| 4 | (n,inelastic) | ( E-thr = 67.57 keV ) | 159.2 (mb) | 1.746 (b) | |||
| 16 | (n,2n) | ( E-thr = 5.800 MeV ) | 2.114 (b) | 29.06 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.68 MeV ) | 3.017 (mb) | 16.57 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 3.697 (μb) | 663.2 (μb) | 294.5 (nb) |
| 28 | (n,np) | ( E-thr = 8.029 MeV ) | 56.73 (μb) | 35.22 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.50 MeV ) | 39.11e-18 (b) | 1.269 (nb) | |||
| 33 | (n,nt) | ( E-thr = 12.68 MeV ) | 0.000 (b) | 52.52e-12 (b) | |||
| 102 | (n,γ) | 43.86 (b) | 43.85 (b) | 1.000 | 203.8 (b) | 1.000 (mb) | 72.95 (mb) |
| 103 | (n,p) | ( E-thr = 1.030 MeV ) | 6.131 (mb) | 2.474 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.703 MeV ) | 581.2 (μb) | 132.4 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.276 MeV ) | 145.5 (μb) | 38.31 (nb) | |||
| 107 | (n,a) | 88.55 (μb) | 88.86 (μb) | 1.004 | 614.1 (μb) | 2.275 (mb) | 30.84 (μb) |
|
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 :
|