61-Pm-148

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 2.004 (kb) 2.006 (kb) 1.001 4.777 (b) 6.445 (b)
2 (n,elastic) 3.111 (b) 3.510 (b) 1.128 2.935 (b) 4.086 (b)
4 (n,inelastic) ( E-thr = 76.22 keV ) 118.2 (mb) 2.175 (b)
16 (n,2n) ( E-thr = 5.946 MeV ) 1.709 (b) 19.17 (mb)
17 (n,3n) ( E-thr = 13.67 MeV ) 3.592 (mb) 16.39 (μb)
22 (n,na) 0.000 (b) 0.000 (b) 2.118 (μb) 458.0 (μb) 184.7 (nb)
28 (n,np) ( E-thr = 6.061 MeV ) 485.5 (μb) 114.3 (nb)
32 (n,nd) ( E-thr = 9.068 MeV ) 330.8 (nb) 19.31 (nb)
33 (n,nt) ( E-thr = 10.46 MeV ) 117.7e-15 (b) 1.197 (nb)
102 (n,γ) 2.001 (kb) 2.001 (kb) 1.000 2.516 (kb) 1.001 (mb) 164.8 (mb)
103 (n,p) 0.000 (b) 0.000 (b) 51.23 (μb) 4.789 (mb) 3.084 (μb)
104 (n,d) ( E-thr = 3.735 MeV ) 1.444 (mb) 284.7 (nb)
105 (n,t) ( E-thr = 2.841 MeV ) 423.9 (μb) 88.07 (nb)
106 (n,He-3) ( E-thr = 6.933 MeV ) 3.030e-12 (b) 7.026e-12 (b)
107 (n,a) 0.000 (b) 0.000 (b) 108.7 (μb) 1.989 (mb) 15.35 (μb)

These cross sections are calculated from JENDL-3.2 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)
 .