55-Cs-135

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 13.14 (b) 13.77 (b) 1.048 4.971 (b) 5.837 (b)
elastic 4.841 (b) 5.464 (b) 1.129 3.151 (b) 4.775 (b)
inelastic ( E-thr = 105.0 keV ) 203.0 (mb) 1.036 (b)
(n,2n) ( E-thr = 8.828 MeV ) 1.610 (b) 1.756 (mb)
(n,3n) ( E-thr = 15.77 MeV ) 657.5 (nb)
(n,na) ( E-thr = 2.582 MeV ) 11.30 (μb) 4.578 (nb)
(n,2na) ( E-thr = 11.23 MeV ) 2.799e-27 (b) 5.693e-15 (b)
(n,np) ( E-thr = 6.797 MeV ) 714.5 (μb) 180.2 (nb)
(n,n2a) ( E-thr = 5.774 MeV ) 2.133e-30 (b) 11.33e-24 (b)
(n,2n2a) ( E-thr = 14.21 MeV ) 0.000 (b)
(n,nd) ( E-thr = 13.17 MeV ) 115.8e-21 (b) 22.13e-12 (b)
(n,nt) ( E-thr = 13.35 MeV ) 349.7e-27 (b) 2.789e-12 (b)
(n,n He-3) ( E-thr = 16.94 MeV ) 2.091e-30 (b)
(n,n He-3) ( E-thr = 15.41 MeV ) 3.386e-12 (b)
(n,4n) ( E-thr = 16.39 MeV ) 1.596e-27 (b)
(n,3nfiss) ( E-thr = 10.02 MeV ) 5.309e-36 (b) 4.359e-21 (b)
capture 8.302 (b) 8.304 (b) 1.000 53.52 (b) 1.488 (mb) 23.53 (mb)
(n,p) ( E-thr = 385.3 keV ) 6.419 (mb) 8.096 (μb)
(n,d) ( E-thr = 4.556 MeV ) 359.0 (μb) 73.49 (nb)
(n,t) ( E-thr = 6.868 MeV ) 2.052 (μb) 2.133 (nb)
(n,He-3) ( E-thr = 8.619 MeV ) 3.532e-15 (b) 19.11e-15 (b)
(n,a) 12.91e-15 (b) 13.08e-15 (b) 1.013 10.76 (μb) 582.8 (μb) 560.0 (nb)
(n,2a) 0.000 (b) 0.000 (b) 318.0e-27 (b) 20.18e-18 (b) 1.321e-18 (b)
(n,2p) ( E-thr = 10.09 MeV ) 3.668e-18 (b) 4.611e-15 (b)
(n,pa) ( E-thr = 4.045 MeV ) 6.671e-15 (b) 891.7e-18 (b)
MT = 115 ( E-thr = 14.15 MeV ) 306.2e-24 (b)
MT = 116 ( E-thr = 16.17 MeV ) 10.64e-30 (b)
MT = 117 ( E-thr = 7.777 MeV ) 656.0e-27 (b) 19.30e-21 (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)
 .