| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.680 (b) | 4.060 (b) | 1.103 | − | 2.121 (b) | 3.350 (b) |
| 2 | (n,elastic) | 2.933 (b) | 3.311 (b) | 1.129 | − | 913.8 (mb) | 2.943 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.376 MeV ) | 480.9 (mb) | 406.7 (mb) | |||
| 16 | (n,2n) | ( E-thr = 10.62 MeV ) | 717.6 (mb) | 197.2 (μb) | |||
| 17 | (n,3n) | ( E-thr = 18.20 MeV ) | − | 2.777 (nb) | |||
| 22 | (n,na) | ( E-thr = 11.38 MeV ) | 316.6e-12 (b) | 6.032 (nb) | |||
| 28 | (n,np) | ( E-thr = 14.12 MeV ) | − | 15.18 (nb) | |||
| 102 | (n,γ) | 740.2 (mb) | 740.6 (mb) | 1.001 | 364.9 (mb) | 246.2 (μb) | 465.7 (μb) |
| 103 | (n,p) | ( E-thr = 7.087 MeV ) | 6.691 (mb) | 3.425 (μb) | |||
| 107 | (n,a) | ( E-thr = 5.599 MeV ) | 548.4 (μb) | 400.0 (nb) | |||
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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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