| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 13.57 (b) | 14.19 (b) | 1.046 | − | 4.951 (b) | 6.017 (b) |
| 2 | (n,elastic) | 4.868 (b) | 5.492 (b) | 1.128 | − | 2.933 (b) | 4.685 (b) |
| 4 | (n,inelastic) | ( E-thr = 251.7 keV ) | 328.5 (mb) | 1.301 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.898 MeV ) | 1.683 (b) | 1.764 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.85 MeV ) | − | 1.344 (μb) | |||
| 22 | (n,na) | ( E-thr = 2.656 MeV ) | 105.5 (μb) | 38.90 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.885 MeV ) | 1.646 (mb) | 342.3 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.16 MeV ) | 0.000 (b) | 306.3e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.43 MeV ) | 0.000 (b) | 40.45e-12 (b) | |||
| 102 | (n,γ) | 8.704 (b) | 8.701 (b) | 1.000 | 62.46 (b) | 1.003 (mb) | 27.61 (mb) |
| 103 | (n,p) | ( E-thr = 379.3 keV ) | 2.454 (mb) | 1.685 (μb) | |||
| 104 | (n,d) | ( E-thr = 4.557 MeV ) | 762.7 (μb) | 193.3 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.929 MeV ) | 15.93 (μb) | 19.31 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 7.080 (μb) | 1.136 (mb) | 536.2 (nb) |
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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 :
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