55-Cs-133

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 32.89 (b) 33.48 (b) 1.018 4.954 (b) 5.949 (b)
elastic 3.985 (b) 4.489 (b) 1.126 3.107 (b) 4.537 (b)
inelastic ( E-thr = 81.61 keV ) 245.6 (mb) 1.359 (b)
(n,2n) ( E-thr = 9.055 MeV ) 1.589 (b) 1.370 (mb)
(n,3n) ( E-thr = 16.28 MeV ) 349.7 (nb)
(n,na) ( E-thr = 2.008 MeV ) 48.53 (μb) 15.34 (nb)
(n,2na) ( E-thr = 10.91 MeV ) 1.667e-24 (b) 26.80e-15 (b)
(n,np) ( E-thr = 6.126 MeV ) 1.957 (mb) 480.6 (nb)
(n,n2a) ( E-thr = 4.701 MeV ) 150.3e-27 (b) 3.521e-21 (b)
(n,2n2a) ( E-thr = 13.47 MeV ) 0.000 (b) 0.000 (b)
(n,nd) ( E-thr = 12.89 MeV ) 132.0e-18 (b) 52.19e-12 (b)
(n,nt) ( E-thr = 13.24 MeV ) 97.33e-24 (b) 3.967e-12 (b)
(n,n He-3) ( E-thr = 16.19 MeV ) 102.0e-27 (b)
(n,n He-3) ( E-thr = 15.13 MeV ) 12.13e-12 (b)
(n,4n) ( E-thr = 15.32 MeV ) 85.00e-24 (b)
(n,3nfiss) ( E-thr = 8.859 MeV ) 3.056e-27 (b) 994.3e-21 (b)
capture 28.90 (b) 28.99 (b) 1.003 446.2 (b) 1.541 (mb) 51.76 (mb)
(n,p) 0.000 (b) 0.000 (b) 398.6 (μb) 9.024 (mb) 26.05 (μb)
(n,d) ( E-thr = 3.884 MeV ) 747.5 (μb) 173.1 (nb)
(n,t) ( E-thr = 6.584 MeV ) 4.212 (μb) 3.198 (nb)
(n,He-3) ( E-thr = 7.543 MeV ) 262.7e-15 (b) 156.7e-15 (b)
(n,a) 110.7e-12 (b) 111.9e-12 (b) 1.011 86.03 (μb) 1.378 (mb) 4.065 (μb)
(n,2a) 0.000 (b) 0.000 (b) 560.6e-24 (b) 2.249e-15 (b) 32.31e-18 (b)
(n,2p) ( E-thr = 8.945 MeV ) 31.39e-15 (b) 55.80e-15 (b)
(n,pa) ( E-thr = 2.731 MeV ) 2.094e-12 (b) 19.00e-15 (b)
MT = 115 ( E-thr = 13.08 MeV ) 823.5e-33 (b) 62.69e-21 (b)
MT = 116 ( E-thr = 15.42 MeV ) 52.01e-27 (b)
MT = 117 ( E-thr = 6.618 MeV ) 21.07e-21 (b) 2.217e-18 (b)

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)
 .