Results:2 different decay possibilities were found


Dataset #1:

Author: Balraj Singh and Jun Chen   Citation:Nuclear Data Sheets 185, 2 (2022)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
153
68
Er
 0.0    (7/2-)   37.1 s 2    α: 53 3  4802.4 14   
149
66
Dy
 

Alphas:

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



  4674 2      53 %  2.48

Dataset #2:

Author: N. Nica   Citation:Nuclear Data Sheets 170, 1 (2020)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
153
68
Er
 0.0    (7/2-)   37.1 s 2    ε: 47 3  4543 10   
153
67
Ho
 

Beta+:

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




   778.3 46   1720 10       0.235 %  0.00183
   823.3 45   1821 10       1.16 %  0.0096
  1070.7 46   2370 10       0.85 %  0.0091
  1172.4 46   2594 10       0.43 %  0.0051
  1223.3 46   2706 10       0.56 %  0.0069
  1273.0 46   2815 10       0.80 %  0.0102
  1305.9 46   2887 10       2.74 %  0.0357
  1414.0 46   3123 10       4.7 %  0.066
  1435.7 46   3170 10       9.4 %  0.135
  1464.4 45   3264 10       0.05 % 5   7E-4 7 

Mean beta+ energy: 1340 keV 4, total beta+ intensity: 20.92 % 5, mean beta+ dose: 0.2804 MeV/Bq-s 11

Electrons:

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



Auger L     5.33      19.2 % 5   0.00102 3 
Auger K    38.4       1.46 % 10   5.6E-4 4 
CE K   132.38 20        2.66 % 23   0.0035 3 
CE L   178.61 20        0.39 % 3   7.0E-4 6 
CE M   185.87 20        0.086 % 7   1.60E-4 14 
CE N   187.56 20        0.0200 % 17   3.8E-5 3 
CE O   187.97 20        0.00292 % 25   5.5E-6 5 
CE K   321.88 20        0.35 % 3   0.00112 11 
CE L   368.11 20        0.050 % 5   1.86E-4 18 
CE M   375.37 20        0.0111 % 11   4.2E-5 4 
CE N   377.06 20        0.0026 % 3   9.7E-6 10 
CE O   377.47 20        3.8E-4 % 4   1.42E-6 14 

Gamma and X-ray radiation:

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



XR l     6.72       4.98 % 22   3.35E-4 15 
XR kα2    46.7       6.56 % 23   0.00306 11 
XR kα1    47.547      11.6 % 4   0.00551 18 
XR kβ3    53.695       1.22 % 4   6.55E-4 22 
XR kβ1    53.877       2.36 % 8   0.00127 4 
XR kβ2    55.293       0.79 % 3   4.37E-4 15 
    94.5 2        0.032 % 21   3.0E-5 20 
   188.0 2        7.2 % 6   0.0135 11 
   351.2 2       21.3 % 16   0.075 6 
   377.5 2        6.2 % 6   0.0234 23 
   398.4 2       11.5 % 15   0.046 6 
   449.4 2        1.7 % 4   0.0076 18 
   463.6 2        1.28 % 23   0.0059 11 
Annihil.   511.0      41.84 % 9  
   565.5 2        0.64 % 22   0.0036 12 
   575.4 2        1.06 % 23   0.0061 13 
  1150.6 2        2.6 % 4   0.030 5 
  1166.4       1.49 %  0.0174
  1301.4       2.55 %  0.0332
  1348.9 3        3.2 % 5   0.043 7 
  1700.1 3        0.64 % 22   0.011 4 

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
    68.794.5 (5.58E+2), 188.0 (5.58E+2), 377.5 (5.58E+2), 449.4 (5.58E+2), 463.6 (5.58E+2),
565.5 (5.58E+2), 575.4 (5.58E+2), 1166.4 (5.58E+2), 1348.9 (5.58E+2)
    94.568.7 (5.58E+2), 188.0, 463.6, 575.4, 1348.9
   188.068.7 (5.58E+2), 94.5, 377.5, 449.4, 463.6, 575.4, 1166.4, 1348.9
   351.2463.6, 575.4, 1348.9
   377.568.7 (5.58E+2), 188.0, 1166.4
   398.41301.4
   449.468.7 (5.58E+2), 188.0
   463.668.7 (5.58E+2), 94.5, 188.0, 351.2
   565.568.7 (5.58E+2), 1166.4
   575.468.7 (5.58E+2), 94.5, 188.0, 351.2
  1166.468.7 (5.58E+2), 188.0, 377.5, 565.5
  1301.4398.4
  1348.968.7 (5.58E+2), 94.5, 188.0, 351.2