55-Cs-133

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 33.32 (b) 33.94 (b) 1.018 4.914 (b) 5.967 (b)
2 (n,elastic) 4.311 (b) 4.860 (b) 1.127 2.913 (b) 4.324 (b)
4 (n,inelastic) ( E-thr = 81.61 keV ) 403.9 (mb) 1.587 (b)
16 (n,2n) ( E-thr = 9.058 MeV ) 1.582 (b) 1.339 (mb)
17 (n,3n) ( E-thr = 16.30 MeV ) 915.6 (nb)
22 (n,na) ( E-thr = 2.021 MeV ) 73.31 (μb) 26.15 (nb)
28 (n,np) ( E-thr = 6.143 MeV ) 1.595 (mb) 328.0 (nb)
32 (n,nd) ( E-thr = 12.82 MeV ) 0.000 (b) 443.5e-12 (b)
33 (n,nt) ( E-thr = 13.26 MeV ) 0.000 (b) 42.07e-12 (b)
102 (n,γ) 29.01 (b) 29.08 (b) 1.002 396.2 (b) 1.001 (mb) 51.84 (mb)
103 (n,p) 0.000 (b) 0.000 (b) 215.5 (μb) 9.409 (mb) 11.11 (μb)
104 (n,d) ( E-thr = 3.815 MeV ) 1.032 (mb) 233.8 (nb)
105 (n,t) ( E-thr = 6.592 MeV ) 25.51 (μb) 20.68 (nb)
106 (n,He-3) ( E-thr = 7.551 MeV ) 2.719e-15 (b) 3.907e-12 (b)
107 (n,a) 0.000 (b) 0.000 (b) 13.54 (μb) 1.329 (mb) 890.6 (nb)

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 :
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)
 .