53-I-135

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 83.27 (b) 83.75 (b) 1.006 4.925 (b) 5.892 (b)
elastic 3.214 (b) 3.629 (b) 1.129 2.923 (b) 5.010 (b)
inelastic ( E-thr = 608.0 keV ) 437.7 (mb) 878.3 (mb)
(n,2n) ( E-thr = 7.847 MeV ) 1.562 (b) 3.109 (mb)
(n,3n) ( E-thr = 14.15 MeV ) 2.498 (μb)
(n,na) ( E-thr = 4.258 MeV ) 173.1 (nb) 302.1e-12 (b)
(n,np) ( E-thr = 8.583 MeV ) 19.48 (μb) 18.10 (nb)
(n,nd) ( E-thr = 14.09 MeV ) 11.69e-12 (b)
capture 80.03 (b) 80.08 (b) 1.001 35.82 (b) 771.2 (μb) 348.9 (μb)
(n,p) ( E-thr = 5.218 MeV ) 799.9 (μb) 197.3 (nb)
(n,d) ( E-thr = 6.342 MeV ) 94.57 (μb) 36.85 (nb)
(n,t) ( E-thr = 7.781 MeV ) 900.7 (nb) 731.2e-12 (b)
(n,He-3) ( E-thr = 11.79 MeV ) 0.000 (b) 1.947e-18 (b)
(n,a) 0.000 (b) 0.000 (b) 911.0 (nb) 92.46 (μb) 53.96 (nb)
MT = 203 ( E-thr = 5.218 MeV ) 819.4 (μb) 215.4 (nb)
MT = 204 ( E-thr = 6.342 MeV ) 94.57 (μb) 36.86 (nb)
MT = 205 ( E-thr = 7.781 MeV ) 900.7 (nb) 731.2e-12 (b)
MT = 206 ( E-thr = 11.79 MeV ) 0.000 (b) 1.947e-18 (b)
MT = 207 0.000 (b) 0.000 (b) 911.0 (nb) 92.63 (μb) 54.26 (nb)

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)
 .