Results:2 different decay possibilities were found


Dataset #1:

Author: F.G. Kondev   Citation:Nuclear Data Sheets 196, 342 (2024)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
206
89
Ac
 0.0    (3+)   22 ms +9-5    α   7960 60   
202
87
Fr
 

Alphas:

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



  7804 21     100 %  7.8

Dataset #2:

Author: F.G. Kondev   Citation:Nuclear Data Sheets 196, 342 (2024)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
206
89
Ac
 20070    (10-)   33 ms +22-9    α   7960 60   
202
87
Fr
 

Alphas:

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



  7750 20     100 %  7.8