Results:3 different decay possibilities were found


Dataset #1:

Author: M. Shamsuzzoha Basunia   Citation:Nuclear Data Sheets 199, 271 (2025)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
81
34
Se
 0    1/2-   18.5 m 1    β-   1588.0 14   
81
35
Br
 

Beta-:

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




    74.46 48  ?  260.7 15      0.0013 % 13   9E-7 9 
   257.8 6    759.6 14      0.41 % 4   0.00106 10 
   330.8 6    938.0 14      0.0191 % 18   6.3E-5 6 
   366.1 6   1021.9 14      0.78 % 7   0.0029 3 
   377.9 6   1049.8 14      0.032 % 7   1.2E-4 3 
   509.8 6   1312.0 14      0.007 % 7   3E-5 3 
   614.2 6   1588.0 14     98.74 % 12   0.6065 9 

Mean beta- energy: 610.7 keV 13, total beta- intensity: 99.99 % 14, mean beta- dose: 0.6106 MeV/Bq-s 16

Electrons:

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



Auger L     1.41       0.0154 % 10   2.18E-7 14 
Auger K    10.2       0.0046 % 3   4.6E-7 3 
CE K   164.942 24        1.50E-4 % 21   2.5E-7 3 
CE L   176.634 24        1.7E-5 % 3   2.9E-8 4 
CE M   178.160 24        2.7E-6 % 4   4.7E-9 7 
CE N   178.389 24        2.4E-7 % 4   4.3E-10 7 
CE K   262.516 10        0.0049 % 4   1.27E-5 10 
CE L   274.208 10        5.2E-4 % 4   1.43E-6 11 
CE M   275.733 10        8.3E-5 % 6   2.29E-7 18 
CE N   275.963 10        7.8E-6 % 6   2.14E-8 17 
CE K   276.664 13        0.0065 % 8   1.79E-5 22 
CE L   288.356 13        7.3E-4 % 9   2.1E-6 3 
CE M   289.882 13        1.16E-4 % 14   3.4E-7 4 
CE N   290.111 13        1.05E-5 % 12   3.1E-8 4 
CE K   524.715 14        7.0E-5 % 5   3.7E-7 3 
CE L   536.407 14        7.4E-6 % 6   4.0E-8 3 
CE M   537.933 14        1.18E-6 % 9   6.3E-9 5 
CE N   538.162 14        1.10E-7 % 8   5.9E-10 5 
CE K   538.981 14        1.29E-4 % 12   7.0E-7 6 
CE L   550.673 14        1.38E-5 % 13   7.6E-8 7 
CE M   552.199 14        2.19E-6 % 20   1.21E-8 11 
CE N   552.428 14        2.04E-7 % 19   1.13E-9 10 
CE K   552.649 14        3.8E-4 % 3   2.08E-6 16 
CE L   564.341 14        4.1E-5 % 3   2.29E-7 18 
CE M   565.867 14        6.5E-6 % 5   3.7E-8 3 
CE N   566.096 14        6.0E-7 % 5   3.4E-9 3 
CE K   636.516 19        2.41E-5 % 18   1.54E-7 12 
CE L   648.208 19        2.55E-6 % 20   1.65E-8 13 
CE M   649.734 19        4.0E-7 % 3   2.63E-9 20 
CE N   649.963 19        3.8E-8 % 3   2.46E-10 19 
CE K   814.86 17        1.63E-4 % 13   1.33E-6 10 
CE K   822.0 5        4.6E-7 % 21   3.8E-9 18 
CE L   826.55 17        1.72E-5 % 13   1.42E-7 11 
CE M   828.07 17        2.73E-6 % 21   2.26E-8 17 
CE N   828.30 17        2.56E-7 % 20   2.12E-9 16 
CE L   833.7 5        4.9E-8 % 23   4.1E-10 19 
CE M   835.2 5        8E-9 % 4   7E-11 3 
CE N   835.5 5        7E-10 % 3   6E-12 3 

Gamma and X-ray radiation:

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



XR l     1.48       3.06E-4 % 22   4.5E-9 3 
XR kα2    11.878       0.00225 % 18   2.68E-7 22 
XR kα1    11.924       0.0044 % 3   5.2E-7 4 
XR kβ3    13.284       3.06E-4 % 24   4.1E-8 3 
XR kβ1    13.292       5.9E-4 % 5   7.9E-8 6 
XR kβ2    13.469       5.9E-5 % 5   8.0E-9 6 
   178.416 24        0.0062 % 5   1.10E-5 9 
   275.990 10        0.67 % 5   0.00185 14 
   290.1 1        0.016 % 4   4.7E-5 10 
   290.138 13        0.56 % 4   0.00164 12 
   538.189 14        0.048 % 4   2.59E-4 19 
   552.455 14        0.091 % 7   5.0E-4 4 
   566.123 14        0.213 % 16   0.00121 9 
   649.990 19        0.0254 % 19   1.65E-4 12 
   789.1 5  ?      0.0025 % 4   2.0E-5 3 
   828.33 17        0.291 % 22   0.00241 18 
   835.5 5        7E-4 % 3   6E-6 3 

Gamma Coincidence Data:

For each gamma, the list of gammas in coincidence is given.
If experimentally known, an estimate of the average time interval (in seconds) between both gammas is given.

E(γ)Coincidence
   178.416649.990 (2.60E-12)
   275.990290.138 (9.70E-12), 552.455 (9.70E-12)
   290.1538.189 (7.60E-13)
   290.138275.990 (9.70E-12)
   538.189290.1 (7.60E-13), 789.1 (7.60E-13)
   552.455275.990 (9.70E-12)
   649.990178.416 (2.60E-12)
   789.1538.189 (7.60E-13)

Dataset #2:

Author: M. Shamsuzzoha Basunia   Citation:Nuclear Data Sheets 199, 271 (2025)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
81
34
Se
 102.96810    7/2+   57.28 m 2    β-   1588.0 14   
81
35
Br
 

Beta-:

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




   315.7 6    901.7 14      0.012 % 4   3.8E-5 12 
   325.0 6    924.0 15      7.0E-4 % 23   2.3E-6 7 
   422.8 6   1154.7 14      0.07 % 3   3.1E-4 11 

Mean beta- energy: 4.1E+2 keV 19, total beta- intensity: 0.09 % 3, mean beta- dose: 3.5E-4 MeV/Bq-s 20

Electrons:

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



Auger L     1.41       0.0044 % 11   6.2E-8 16 
Auger K    10.2       0.0013 % 4   1.3E-7 4 
CE K   246.831 12        0.0030 % 10   7.3E-6 24 
CE L   258.523 12        3.5E-4 % 11   9E-7 3 
CE M   260.048 12        5.5E-5 % 18   1.4E-7 5 
CE N   260.278 12        5.1E-6 % 17   1.3E-8 4 
CE K   262.46 5        5.4E-4 % 17   1.4E-6 5 
CE L   274.15 5        5.9E-5 % 19   1.6E-7 5 
CE M   275.67 5        9E-6 % 3   2.6E-8 8 
CE N   275.90 5        9E-7 % 3   2.4E-9 8 
CE K   477.8263 4        1.7E-7 % 5   7.9E-10 23 
CE L   489.5180 4        1.8E-8 % 5   9E-11 3 
CE M   491.0435 4        2.8E-9 % 8   1.4E-11 4 
CE N   491.2727 5        2.6E-10 % 8   1.3E-12 4 
CE K   753.4 5        4.1E-7 % 11   3.1E-9 9 
CE L   765.1 5        4.3E-8 % 12   3.3E-10 9 
CE M   766.6 5        6.8E-9 % 19   5.2E-11 15 
CE N   766.9 5        6.4E-10 % 18   4.9E-12 14 

Gamma and X-ray radiation:

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



XR l     1.48       8.8E-5 % 22   1.3E-9 3 
XR kα2    11.878       6.4E-4 % 18   7.6E-8 21 
XR kα1    11.924       0.0012 % 3   1.5E-7 4 
XR kβ3    13.284       8.7E-5 % 25   1.2E-8 3 
XR kβ1    13.292       1.7E-4 % 5   2.2E-8 6 
XR kβ2    13.469       1.7E-5 % 5   2.3E-9 6 
   260.305 12        0.074 % 24   1.9E-4 6 
   275.93 5        0.075 % 24   2.1E-4 7 
   491.3       9.0E-5 % 26   4.4E-7 13 
   766.9 5        0.00061 % 17   4.7E-6 13 
   789.254 19        0.0116 % 29   9.2E-5 23 

Gamma Coincidence Data:

For each gamma, the list of gammas in coincidence is given.
If experimentally known, an estimate of the average time interval (in seconds) between both gammas is given.

E(γ)Coincidence
   260.305275.93 (9.70E-12)
   275.93260.305 (9.70E-12), 491.3 (9.70E-12)
   491.3275.93 (9.70E-12)

Dataset #3:

Author: M. Shamsuzzoha Basunia   Citation:Nuclear Data Sheets 199, 271 (2025)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
81
34
Se
 102.96810    7/2+   57.28 m 2    IT       
81
34
Se
 

Electrons:

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



Auger L     1.32      96.3 % 3   0.001272 4 
Auger K     9.67      27.0 % 3   0.00261 3 
CE K    90.310 10       67.8 %  0.0613
CE L   101.314 11       16.46 %  0.01668
CE M   102.968 10        2.57 %  0.00264
CE N   102.968 10        0.1727 %  1.78E-4

Gamma and X-ray radiation:

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



XR l     1.38       1.72 % 5   2.37E-5 7 
XR kα2    11.182      11.9 % 4   0.00133 5 
XR kα1    11.222      23.1 % 8   0.00260 9 
XR kβ3    12.49       1.59 % 5   1.98E-4 7 
XR kβ1    12.496       3.08 % 11   3.85E-4 14 
XR kβ2    12.652       0.219 % 8   2.77E-5 10 
   102.968 10       12.80 %  0.01318