| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 150.0 (b) | 153.8 (b) | 1.025 | − | 4.337 (b) | 5.718 (b) |
| 2 | (n,elastic) | 3.276 (b) | 3.677 (b) | 1.123 | − | 2.539 (b) | 4.044 (b) |
| 4 | (n,inelastic) | ( E-thr = 40.14 keV ) | 468.3 (mb) | 1.580 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.414 MeV ) | 1.285 (b) | 802.1 (μb) | |||
| 17 | (n,3n) | ( E-thr = 16.93 MeV ) | − | 413.9 (nb) | |||
| 22 | (n,na) | ( E-thr = 3.150 MeV ) | 782.3 (μb) | 175.6 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.278 MeV ) | 14.57 (mb) | 4.409 (μb) | |||
| 32 | (n,nd) | ( E-thr = 13.26 MeV ) | 0.000 (b) | 806.7e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.89 MeV ) | 0.000 (b) | 56.51e-12 (b) | |||
| 102 | (n,γ) | 146.7 (b) | 150.1 (b) | 1.023 | 1.044 (kb) | 1.004 (mb) | 88.97 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 2.575 (mb) | 16.51 (mb) | 200.5 (μb) |
| 104 | (n,d) | ( E-thr = 3.945 MeV ) | 1.559 (mb) | 331.9 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.015 MeV ) | 40.55 (μb) | 19.99 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.637 MeV ) | 304.6e-15 (b) | 7.356e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 368.3 (μb) | 10.16 (mb) | 19.52 (μb) |
|
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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