Results:2 different decay possibilities were found


Dataset #1:

Author: Balraj Singh and Jun Chen   Citation:Nuclear Data Sheets 147, 1 (2018)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
168
74
W
 0.0    0+   50.9 s 19    α: 3.2E-3 10  4500 11   
164
72
Hf
 

Alphas:

Energy
(keV)
Intensity
(%)
Dose
( MeV/Bq-s )



  4399 12       0.0031 % 10   1.4E-4 4 

Dataset #2:

Author: Coral M. Baglin   Citation:Nuclear Data Sheets 111, 1807 (2010)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
168
74
W
 0.0    0+   50.9 s 19    ε: 100  3500 30   
168
73
Ta
 

Beta+:

Energy
(keV)
End-point energy
(keV)
Intensity
(%)
Dose
( MeV/Bq-s )




   961 14      2.13E+3 3       0.60 % 11   0.0058 11 
  1039 14      2.30E+3 3      21 % 4   0.22 4 

Mean beta+ energy: 1.0E+3 keV 3, total beta+ intensity: 22 % 4, mean beta+ dose: 0.22 MeV/Bq-s 7

Electrons:

Energy
(keV)
Intensity
(%)
Dose
( MeV/Bq-s )



Auger L     6.35      46 % 8   0.0029 5 
Auger K    46.2       3.1 % 7   0.0014 3 

Gamma and X-ray radiation:

Energy
(keV)
Intensity
(%)
Dose
( MeV/Bq-s )



XR l     8.15      17 % 3   0.00140 25 
XR kα2    56.28      17 % 4   0.0098 20 
XR kα1    57.535      30 % 6   0.017 4 
XR kβ3    64.948       3.4 % 7   0.0022 4 
XR kβ1    65.222       6.6 % 13   0.0043 9 
XR kβ2    66.982       2.3 % 5   0.0015 3 
   173.9 3        1.09 % 22   0.0019 4 
   178.5 3       78 %  0.139
   352.2 3        1.4 % 3   0.0049 9 
Annihil.   511.0      43 % 8  

Gamma Coincidence Data:

For each gamma, the list of gammas in coincidence is given.
If experimentally known, an estimate of the average time interval (in seconds) between both gammas is given.

E(γ)Coincidence
   173.9178.5
   178.5173.9