| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 7.504 (b) | 8.319 (b) | 1.109 | − | 3.972 (b) | 5.852 (b) |
| 2 | (n,elastic) | 6.354 (b) | 7.170 (b) | 1.128 | − | 2.222 (b) | 4.576 (b) |
| 4 | (n,inelastic) | ( E-thr = 30.73 keV ) | 349.8 (mb) | 1.246 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.922 MeV ) | 1.335 (b) | 1.489 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.90 MeV ) | − | 213.7 (nb) | |||
| 22 | (n,na) | ( E-thr = 1.968 MeV ) | 2.262 (mb) | 1.474 (μb) | |||
| 28 | (n,np) | ( E-thr = 6.105 MeV ) | 11.19 (mb) | 4.516 (μb) | |||
| 102 | (n,γ) | 1.149 (b) | 1.149 (b) | 1.000 | 9.428 (b) | 1.002 (mb) | 28.37 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 4.182 (mb) | 37.37 (mb) | 284.0 (μb) |
| 104 | (n,d) | ( E-thr = 3.856 MeV ) | 5.913 (mb) | 3.195 (μb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.563 (mb) | 7.169 (mb) | 121.1 (μb) |
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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 :
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