Results:2 different decay possibilities were found


Dataset #1:

Author: C.J. Chiara and F.G. Kondev   Citation:Nuclear Data Sheets 111,141 (2010)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
204
85
At
 587.3020    10-   108 ms 10    IT: 100      
204
85
At
 

Electrons:

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



Auger L     8.52       3.03 % 9   2.58E-4 8 
Auger K    61.2       0.128 % 15   7.8E-5 9 
CE K   491.57 20        3.75 %  0.0184
CE L   569.81 20        2.16 %  0.01233
CE M   582.98 20        0.566 %  0.00330
CE N   586.26 20        0.1471 %  8.63E-4
CE O   587.19 20        0.0299 %  1.76E-4
CE P   587.29 20        0.00351 %  2.06E-5

Gamma and X-ray radiation:

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



XR l    11.4       2.16 % 9   2.46E-4 10 
XR kα2    78.948       1.046 % 23   8.26E-4 18 
XR kα1    81.517       1.73 % 3   0.00141 3 
XR kβ3    91.73       0.209 % 4   1.92E-4 4 
XR kβ1    92.315       0.401 % 8   3.70E-4 7 
XR kβ2    94.9       0.149 % 3   1.41E-4 3 
   587.3 2       93.3 %  0.548

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
85
At
 0.0    7+   9.23 m 12    α   6070.4 12   
200
83
Bi
 

Alphas:

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



  5950.6 12       3.91 %  0.233