| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 49.64 (b) | 51.73 (b) | 1.042 | − | 2.045 (b) | 2.756 (b) |
| 2 | (n,elastic) | 16.12 (b) | 18.20 (b) | 1.129 | − | 930.7 (mb) | 2.530 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.254 MeV ) | 352.2 (mb) | 108.8 (mb) | |||
| 16 | (n,2n) | ( E-thr = 10.59 MeV ) | 89.94 (mb) | 18.59 (μb) | |||
| 22 | (n,na) | ( E-thr = 7.198 MeV ) | 64.32 (mb) | 13.12 (μb) | |||
| 28 | (n,np) | ( E-thr = 6.555 MeV ) | 372.7 (mb) | 407.6 (μb) | |||
| 32 | (n,nd) | ( E-thr = 16.01 MeV ) | − | 2.783 (nb) | |||
| 102 | (n,γ) | 33.15 (b) | 33.16 (b) | 1.000 | 13.56 (b) | 334.2 (μb) | 947.3 (μb) |
| 103 | (n,p) | 370.8 (mb) | 371.4 (mb) | 1.002 | 657.0 (mb) | 109.7 (mb) | 73.03 (mb) |
| 104 | (n,d) | ( E-thr = 4.267 MeV ) | 10.18 (mb) | 21.96 (μb) | |||
| 105 | (n,t) | ( E-thr = 9.572 MeV ) | 1.290 (mb) | 367.7 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 9.808 MeV ) | 10.89 (μb) | 2.307 (nb) | |||
| 107 | (n,a) | 60.63 (μb) | 60.67 (μb) | 1.001 | 279.6 (mb) | 112.6 (mb) | 43.01 (mb) |
| 111 | (n,2p) | ( E-thr = 11.00 MeV ) | 9.652 (μb) | 20.40 (nb) | |||
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These cross sections are calculated from JENDL-4.0 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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