58-Ce-141

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 32.31 (b) 32.63 (b) 1.010 4.916 (b) 5.926 (b)
elastic 3.290 (b) 3.708 (b) 1.127 2.823 (b) 4.914 (b)
inelastic ( E-thr = 666.8 keV ) 220.0 (mb) 970.7 (mb)
(n,2n) ( E-thr = 5.467 MeV ) 1.841 (b) 12.83 (mb)
(n,3n) ( E-thr = 14.74 MeV ) 1.265 (μb)
(n,na) ( E-thr = 144.8 keV ) 648.6 (μb) 199.6 (nb)
(n,np) ( E-thr = 8.468 MeV ) 146.4 (μb) 99.27 (nb)
(n,nd) ( E-thr = 11.43 MeV ) 0.000 (b) 1.880 (nb)
capture 29.02 (b) 28.93 (b) 0.997 148.3 (b) 839.4 (μb) 27.84 (mb)
(n,p) ( E-thr = 1.732 MeV ) 9.558 (mb) 4.937 (μb)
(n,d) ( E-thr = 6.228 MeV ) 4.840 (mb) 992.3 (nb)
(n,t) ( E-thr = 5.124 MeV ) 937.5 (μb) 239.6 (nb)
(n,He-3) ( E-thr = 7.439 MeV ) 0.000 (b) 744.3e-15 (b)
(n,a) 0.000 (b) 0.000 (b) 1.139 (mb) 19.15 (mb) 126.1 (μb)
MT = 203 ( E-thr = 1.732 MeV ) 9.704 (mb) 5.037 (μb)
MT = 204 ( E-thr = 6.228 MeV ) 4.840 (mb) 994.2 (nb)
MT = 205 ( E-thr = 5.124 MeV ) 937.5 (μb) 239.6 (nb)
MT = 206 ( E-thr = 7.439 MeV ) 0.000 (b) 744.3e-15 (b)
MT = 207 0.000 (b) 0.000 (b) 1.139 (mb) 19.80 (mb) 126.2 (μb)

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).

Maxwellian Average :
σmacs(T) =
2
 
 
π
EU
 
EL
σ(E,T) ⋅ E ⋅ exp (
E
  
kBT
) dE
 
EU
 
EL
E ⋅ exp (
E
  
kBT
) dE
,
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 :
σri(T) =
EU
 
EL
σ(E,T) ⋅
1
 
E
dE ,
with  EL = 0.5 eV  and  EU = 10 MeV.
U-235 Thermal Fission-Neutron Spectrum Average (Fiss. Spec. Average) :
σfacs(T) =
EU
 
EL
σ(E,T) ⋅
 
4
 
πa3b
⋅ exp (
ab E
     
4 a
) ⋅ sinh
 
bE
dE
 
EU
 
EL
 
4
 
πa3b
⋅ exp (
ab E
     
4 a
) ⋅ sinh
 
bE
dE
,
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 :
g(T) =
σmacs(T)
 
σ(0.0253 eV,T)
 .