| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 4.914 (b) | 5.443 (b) | 1.108 | − | 5.699 (b) | 6.984 (b) |
| 2 | (n,elastic) | 4.118 (b) | 4.647 (b) | 1.128 | − | 3.423 (b) | 5.110 (b) |
| 4 | (n,inelastic) | ( E-thr = 75.77 keV ) | 508.0 (mb) | 1.841 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.504 MeV ) | 1.753 (b) | 6.014 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.49 MeV ) | 10.99 (mb) | 15.55 (μb) | |||
| 22 | (n,na) | ( E-thr = 1.003 MeV ) | 10.53 (μb) | 7.984 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.365 MeV ) | 12.98 (nb) | 7.436 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.85 MeV ) | 0.000 (b) | 15.76e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.51 MeV ) | 0.000 (b) | 4.672e-12 (b) | |||
| 102 | (n,γ) | 796.3 (mb) | 796.0 (mb) | 1.000 | 12.02 (b) | 1.007 (mb) | 24.91 (mb) |
| 103 | (n,p) | ( E-thr = 3.643 MeV ) | 1.330 (mb) | 310.5 (nb) | |||
| 104 | (n,d) | ( E-thr = 7.041 MeV ) | 37.08 (μb) | 43.12 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.625 MeV ) | 11.52 (μb) | 18.73 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.113 (μb) | 1.409 (mb) | 354.5 (nb) |
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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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