62-Sm-149

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 40.72 (kb) 68.76 (kb) 1.688 5.322 (b) 6.990 (b)
2 (n,elastic) 178.8 (b) 424.3 (b) 2.373 3.080 (b) 4.555 (b)
4 (n,inelastic) ( E-thr = 22.65 keV ) 379.5 (mb) 2.192 (b)
16 (n,2n) ( E-thr = 5.916 MeV ) 1.846 (b) 23.45 (mb)
17 (n,3n) ( E-thr = 14.12 MeV ) 6.647 (μb)
22 (n,na) 0.000 (b) 0.000 (b) 6.452 (μb) 1.468 (mb) 576.1 (nb)
28 (n,np) ( E-thr = 7.610 MeV ) 163.9 (μb) 88.97 (nb)
32 (n,nd) ( E-thr = 11.23 MeV ) 693.6e-18 (b) 4.170 (nb)
33 (n,nt) ( E-thr = 12.73 MeV ) 0.000 (b) 81.96e-12 (b)
102 (n,γ) 40.54 (kb) 68.33 (kb) 1.685 3.494 (kb) 1.006 (mb) 217.0 (mb)
103 (n,p) ( E-thr = 291.5 keV ) 6.871 (mb) 3.577 (μb)
104 (n,d) ( E-thr = 5.284 MeV ) 3.061 (mb) 650.9 (nb)
105 (n,t) ( E-thr = 5.003 MeV ) 475.7 (μb) 128.7 (nb)
106 (n,He-3) ( E-thr = 5.886 MeV ) 6.249e-12 (b) 19.50e-12 (b)
107 (n,a) 30.77 (mb) 52.14 (mb) 1.695 2.970 (mb) 2.801 (mb) 34.29 (μb)

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)
 .