| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 47.38 (b) | 46.29 (b) | 0.977 | − | 5.263 (b) | 6.582 (b) |
| 2 | (n,elastic) | 20.88 (b) | 20.72 (b) | 0.992 | − | 3.116 (b) | 4.510 (b) |
| 4 | (n,inelastic) | ( E-thr = 58.37 keV ) | 287.3 (mb) | 1.886 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.189 MeV ) | 1.852 (b) | 3.428 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.02 MeV ) | − | 5.638 (μb) | |||
| 22 | (n,na) | ( E-thr = 133.8 keV ) | 32.11 (μb) | 12.16 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.178 MeV ) | 353.4 (μb) | 99.47 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.85 MeV ) | 541.2e-21 (b) | 518.4e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 12.03 MeV ) | 14.46e-21 (b) | 48.06e-12 (b) | |||
| 102 | (n,γ) | 26.50 (b) | 25.57 (b) | 0.965 | 470.6 (b) | 1.012 (mb) | 182.8 (mb) |
| 103 | (n,p) | ( E-thr = 192.8 keV ) | 3.978 (mb) | 1.910 (μb) | |||
| 104 | (n,d) | ( E-thr = 3.853 MeV ) | 639.5 (μb) | 158.8 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.621 MeV ) | 38.72 (μb) | 21.58 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 15.31 (μb) | 2.057 (mb) | 1.093 (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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