| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 510.7 (b) | 518.1 (b) | 1.015 | − | 4.931 (b) | 6.710 (b) |
| 2 | (n,elastic) | 79.54 (b) | 89.04 (b) | 1.119 | − | 2.645 (b) | 4.514 (b) |
| 4 | (n,inelastic) | ( E-thr = 50.24 keV ) | 140.8 (mb) | 2.047 (b) | |||
| 16 | (n,2n) | ( E-thr = 5.333 MeV ) | 2.001 (b) | 45.31 (mb) | |||
| 17 | (n,3n) | ( E-thr = 12.95 MeV ) | 138.8 (mb) | 36.37 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 358.1 (nb) | 185.5 (μb) | 59.87 (nb) |
| 28 | (n,np) | ( E-thr = 8.657 MeV ) | 7.524 (μb) | 14.81 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.66 MeV ) | 8.070e-18 (b) | 1.107 (nb) | |||
| 33 | (n,nt) | ( E-thr = 12.43 MeV ) | 0.000 (b) | 82.52e-12 (b) | |||
| 102 | (n,γ) | 431.1 (b) | 429.1 (b) | 0.995 | 630.3 (b) | 1.001 (mb) | 101.9 (mb) |
| 103 | (n,p) | ( E-thr = 1.935 MeV ) | 2.772 (mb) | 791.3 (nb) | |||
| 104 | (n,d) | ( E-thr = 6.331 MeV ) | 320.3 (μb) | 90.18 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.430 MeV ) | 102.7 (μb) | 33.28 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 23.76 (μb) | 1.364 (mb) | 2.910 (μb) |
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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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