Results:2 different decay possibilities were found


Dataset #1:

Author: F.G. Kondev   Citation:Nuclear Data Sheets 159, 1 (2019)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
181
81
Tl
 835.94    (9/2-)   1.40 ms 3    α: 0.40 6  6321   
177
79
Au
 

Alphas:

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



  6578 7       0.38 % 6   0.025 4 
  6818 15       0.006 % 3   3.8E-4 20 
  6974 15       0.010 % 3   7.3E-4 22 

Gamma and X-ray radiation:

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



   241.5 3        0.24 % 4   5.8E-4 10 

Dataset #2:

Author: F.G. Kondev   Citation:Nuclear Data Sheets 159, 1 (2019)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
181
81
Tl
 0.0    1/2+   2.9 s 1    α: 10  6322   
177
79
Au
 

Alphas:

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



  6183 7       8.6 %  0.53