| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 29.64 (b) | 32.86 (b) | 1.108 | − | 2.761 (b) | 3.661 (b) |
| 2 | (n,elastic) | 25.02 (b) | 28.24 (b) | 1.128 | − | 1.339 (b) | 3.212 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.480 MeV ) | 296.6 (mb) | 324.9 (mb) | |||
| 16 | (n,2n) | ( E-thr = 12.41 MeV ) | 30.65 (mb) | 3.743 (μb) | |||
| 22 | (n,na) | ( E-thr = 6.509 MeV ) | 3.477 (mb) | 1.066 (μb) | |||
| 28 | (n,np) | ( E-thr = 8.313 MeV ) | 635.6 (mb) | 201.4 (μb) | |||
| 102 | (n,γ) | 4.621 (b) | 4.621 (b) | 1.000 | 2.213 (b) | 53.98 (μb) | 8.700 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 616.2 (mb) | 329.8 (mb) | 107.2 (mb) |
| 104 | (n,d) | ( E-thr = 6.050 MeV ) | 8.181 (mb) | 4.140 (μb) | |||
| 105 | (n,t) | ( E-thr = 11.26 MeV ) | 1.635 (μb) | 2.554 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 6.593 MeV ) | 25.02 (μb) | 5.675 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 58.54 (mb) | 105.8 (mb) | 6.977 (mb) |
| 111 | (n,2p) | ( E-thr = 6.671 MeV ) | 11.80 (mb) | 2.174 (μb) | |||
|
These cross sections are calculated from JENDL-3.3 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 :
|