| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 14.02 (b) | 15.48 (b) | 1.104 | − | 2.555 (b) | 3.192 (b) |
| 2 | (n,elastic) | 11.47 (b) | 12.94 (b) | 1.128 | − | 1.135 (b) | 2.529 (b) |
| 4 | (n,inelastic) | ( E-thr = 14.66 keV ) | 729.8 (mb) | 653.6 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.782 MeV ) | 426.2 (mb) | 103.4 (μb) | |||
| 22 | (n,na) | ( E-thr = 7.455 MeV ) | 785.0 (μb) | 364.8 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.020 MeV ) | 93.56 (mb) | 19.23 (μb) | |||
| 102 | (n,γ) | 2.550 (b) | 2.532 (b) | 0.993 | 1.335 (b) | 99.40 (μb) | 3.509 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 50.43 (mb) | 126.2 (mb) | 5.661 (mb) |
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 7.549 (mb) | 43.12 (mb) | 373.2 (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 :
|