| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 14.05 (b) | 14.37 (b) | 1.022 | − | 4.890 (b) | 6.180 (b) |
| 2 | (n,elastic) | 2.549 (b) | 2.874 (b) | 1.127 | − | 2.953 (b) | 4.786 (b) |
| 4 | (n,inelastic) | ( E-thr = 146.4 keV ) | 196.0 (mb) | 1.373 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.468 MeV ) | 1.720 (b) | 1.054 (mb) | |||
| 17 | (n,3n) | ( E-thr = 17.44 MeV ) | − | 168.1 (nb) | |||
| 22 | (n,na) | ( E-thr = 1.319 MeV ) | 457.5 (μb) | 123.9 (nb) | |||
| 28 | (n,np) | ( E-thr = 5.268 MeV ) | 5.756 (mb) | 1.299 (μb) | |||
| 32 | (n,nd) | ( E-thr = 12.20 MeV ) | 131.3e-21 (b) | 791.6e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.50 MeV ) | 0.000 (b) | 8.237e-12 (b) | |||
| 102 | (n,γ) | 11.50 (b) | 11.49 (b) | 0.999 | 18.39 (b) | 1.002 (mb) | 18.40 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 184.0 (μb) | 8.766 (mb) | 9.118 (μb) |
| 104 | (n,d) | ( E-thr = 2.941 MeV ) | 2.074 (mb) | 433.9 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.969 MeV ) | 34.46 (μb) | 18.11 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 5.683 MeV ) | 109.3e-12 (b) | 32.09e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 99.08 (μb) | 2.673 (mb) | 6.337 (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 :
|