42-Mo-99

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 13.76 (b) 14.50 (b) 1.054 4.162 (b) 6.177 (b)
elastic 5.730 (b) 6.469 (b) 1.129 2.310 (b) 4.164 (b)
inelastic ( E-thr = 98.78 keV ) 283.3 (mb) 1.981 (b)
(n,2n) ( E-thr = 5.986 MeV ) 1.558 (b) 12.77 (mb)
(n,3n) ( E-thr = 14.72 MeV ) 2.690 (μb)
(n,na) ( E-thr = 2.761 MeV ) 339.3 (μb) 79.59 (nb)
(n,np) ( E-thr = 9.825 MeV ) 59.47 (μb) 60.77 (nb)
(n,nd) ( E-thr = 13.63 MeV ) 0.000 (b) 224.7e-12 (b)
capture 8.003 (b) 8.007 (b) 1.001 36.87 (b) 857.5 (μb) 17.57 (mb)
(n,p) ( E-thr = 2.886 MeV ) 7.653 (mb) 4.338 (μb)
(n,d) ( E-thr = 7.578 MeV ) 1.540 (mb) 294.5 (nb)
(n,t) ( E-thr = 7.313 MeV ) 24.26 (μb) 7.691 (nb)
(n,He-3) ( E-thr = 9.980 MeV ) 0.000 (b) 101.3e-15 (b)
(n,a) 0.000 (b) 0.000 (b) 105.8 (μb) 2.364 (mb) 8.801 (μb)
MT = 203 ( E-thr = 2.886 MeV ) 7.712 (mb) 4.399 (μb)
MT = 204 ( E-thr = 7.578 MeV ) 1.540 (mb) 294.7 (nb)
MT = 205 ( E-thr = 7.313 MeV ) 24.26 (μb) 7.691 (nb)
MT = 206 ( E-thr = 9.980 MeV ) 0.000 (b) 101.3e-15 (b)
MT = 207 0.000 (b) 0.000 (b) 105.8 (μb) 2.703 (mb) 8.880 (μb)

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)
 .