Results:2 different decay possibilities were found


Dataset #1:

Author: C.D. Nesaraja   Citation:Nuclear Data Sheets 195, 718 (2024)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
253
98
Cf
 0.0    (7/2+)   17.81 d 8    α: 0.31 4  6126   
249
96
Cm
 

Alphas:

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



  5920 5       0.016 % 6   1.0E-3 4 
  5980 4       0.29 % 4   0.0176 23 

Dataset #2:

Authors: E. Browne, J. K. Tuli   Citation:Nuclear Data Sheets 114, 1041 (2013)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
253
98
Cf
 0.0    (7/2+)   17.81 d 8    β-: 99.69 4  287   
253
99
Es
 

Beta-:

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




    65.2 18    241 6     50 % 5   0.033 3 
    78.8 18    287 6     50 % 5   0.039 4 

Mean beta- energy: 72 keV 7, total beta- intensity: 100 % 7, mean beta- dose: 0.072 MeV/Bq-s 9