Results:2 different decay possibilities were found


Dataset #1:

Author: F.G. Kondev   Citation:Nuclear Data Sheets 192, 1 (2023)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
204
87
Fr
 0    (3+)   2.05 s 12    α: 92 2  7170.3 24   
200
85
At
 

Alphas:

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



  6916 8       0.58 % 19   0.040 13 
  7031 5      95.4 % 20   6.71 14 

Dataset #2:

Author: F.G. Kondev   Citation:Nuclear Data Sheets 192, 1 (2023)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
204
87
Fr
 504    (7+)   2.31 s +15-14    α   7170.3 24   
200
85
At
 

Alphas:

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



  6969 5      89.4 % 20   6.23 14 
  7077 8       0.63 % 18   0.045 13