MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
---|---|---|---|---|---|---|---|
1 | (n,total) | 3.831 (b) | 4.224 (b) | 1.102 | − | 2.466 (b) | 3.296 (b) |
2 | (n,elastic) | 3.056 (b) | 3.449 (b) | 1.128 | − | 1.130 (b) | 2.852 (b) |
4 | (n,inelastic) | ( E-thr = 1.462 MeV ) | 919.1 (mb) | 441.3 (mb) | |||
16 | (n,2n) | ( E-thr = 12.27 MeV ) | 258.4 (mb) | 33.23 (μb) | |||
22 | (n,na) | ( E-thr = 9.534 MeV ) | 23.24 (μb) | 100.3 (nb) | |||
28 | (n,np) | ( E-thr = 10.71 MeV ) | 30.43 (mb) | 5.427 (μb) | |||
102 | (n,γ) | 775.2 (mb) | 775.2 (mb) | 1.000 | 468.2 (mb) | 680.4 (μb) | 2.250 (mb) |
103 | (n,p) | ( E-thr = 3.258 MeV ) | 88.22 (mb) | 1.014 (mb) | |||
104 | (n,d) | ( E-thr = 8.441 MeV ) | 3.797 (mb) | 778.0 (nb) | |||
105 | (n,t) | ( E-thr = 13.33 MeV ) | 4.315e-15 (b) | 345.7e-12 (b) | |||
106 | (n,He-3) | ( E-thr = 11.05 MeV ) | 301.3e-12 (b) | 66.34e-12 (b) | |||
107 | (n,a) | ( E-thr = 1.233 MeV ) | 34.91 (mb) | 35.93 (μb) | |||
111 | (n,2p) | ( E-thr = 12.43 MeV ) | 12.11e-15 (b) | 41.89e-12 (b) |
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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