| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 22.40 (b) | 24.71 (b) | 1.103 | − | 2.761 (b) | 3.712 (b) |
| 2 | (n,elastic) | 18.02 (b) | 20.33 (b) | 1.128 | − | 1.418 (b) | 3.253 (b) |
| 4 | (n,inelastic) | ( E-thr = 68.52 keV ) | 397.1 (mb) | 372.6 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.955 MeV ) | 155.8 (mb) | 47.49 (μb) | |||
| 17 | (n,3n) | ( E-thr = 16.77 MeV ) | − | 1.668 (nb) | |||
| 22 | (n,na) | ( E-thr = 6.401 MeV ) | 10.27 (mb) | 2.114 (μb) | |||
| 28 | (n,np) | ( E-thr = 8.320 MeV ) | 402.8 (mb) | 153.0 (μb) | |||
| 102 | (n,γ) | 4.384 (b) | 4.384 (b) | 1.000 | 2.136 (b) | 56.33 (μb) | 7.789 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 438.2 (mb) | 282.5 (mb) | 73.78 (mb) |
| 104 | (n,d) | ( E-thr = 5.965 MeV ) | 8.940 (mb) | 3.285 (μb) | |||
| 105 | (n,t) | ( E-thr = 9.014 MeV ) | 8.372 (μb) | 60.39 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 6.589 MeV ) | 6.828 (μb) | 1.999 (nb) | |||
| 107 | (n,a) | 6.083e-15 (b) | 13.73e-15 (b) | 2.257 | 49.10 (mb) | 77.67 (mb) | 4.445 (mb) |
| 111 | (n,2p) | ( E-thr = 6.671 MeV ) | 8.056 (mb) | 1.485 (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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