Results:2 different decay possibilities were found


Dataset #1:

Author: T.D. Johnson and W.D. Kulp   Citation:Nuclear Data Sheets 129, 1 (2015)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
87
41
Nb
 3.8414    (9/2+)   2.6 m 1    β+   5473   
87
40
Zr
 

Beta+:

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




  1154.6 38   2570 8      27 %  0.3117
  1824.1 39   3984 8      21 %  0.3831
  1953.3 39   4254 8       5 %  0.09767
  2049.9 39   4455 8      36 %  0.7380

Mean beta+ energy: 1719.587 keV , total beta+ intensity: 89 % , mean beta+ dose: 1.53 MeV/Bq-s

Electrons:

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



Auger L     2.02       6.50 % 6   1.313E-4 11 
Auger K    13.4       1.51 % 3   2.03E-4 4 
CE K   183.00 20        0.97 % 4   0.00178 8 
CE L   198.47 20        0.116 % 5   2.30E-4 10 
CE M   200.57 20        0.0202 % 9   4.05E-5 17 
CE N   200.95 20        0.00283 % 12   5.68E-6 24 

Gamma and X-ray radiation:

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



XR l     2.04       0.213 % 6   4.34E-6 12 
XR kα2    15.691       1.22 % 4   1.91E-4 6 
XR kα1    15.775       2.33 % 7   3.68E-4 11 
XR kβ3    17.653       0.180 % 5   3.18E-5 9 
XR kβ1    17.667       0.350 % 10   6.18E-5 18 
XR kβ2    17.969       0.0711 % 24   1.28E-5 4 
   201.0 2       30.0 % 12   0.0603 24 
   242.4 23        0.6 %  0.001454
   322.8 23        0.6 %  0.001937
   461.7 23        0.6 %  0.002770
   466.5 23        0.6 %  0.002799
   470.0 23        2.1 %  0.00987
   470.6 2       20.7 % 12   0.097 6 
Annihil.   511.0     178 % 
   600.0 5        2.9 % 5   0.017 3 
   616.6 2        9.3 % 9   0.057 6 
   797.0 23        1.5 %  0.01196
   801.0 6        1.2 % 4   0.010 3 
   887.0 15        2.2 % 7   0.019 6 
  1066.8 5       11.1 % 12   0.118 13 
  1083.0 7        2.1 % 6   0.023 6 
  1295.4 23        0.6 %  0.007772
  1304.6 23        1.5 %  0.01957
  1360.1 23        0.6 %  0.008161
  1683.2 3        0.7 % 3   0.012 5 
  1718.7 23        0.6 %  0.010312
  1858.3 23        0.6 %  0.011150
  1868.4 23        0.6 %  0.011210
  1884.2 3        9.9 % 9   0.187 17 
  2044.4 23        0.6 %  0.012266
  2153.3 7        1.1 % 3   0.025 7 
  2397.3 23        0.6 %  0.014384
  2852.3 23        0.6 %  0.017114
  3246.0 23        0.6 %  0.019476

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
   201.0242.4, 322.8, 381.3, 388.7, 461.7, 466.5, 470.0, 600.0, 616.6, 797.0, 887.0, 1066.8,
1083.0, 1295.4, 1304.6, 1360.1, 1683.2, 1718.7, 1858.3, 1868.4, 2044.4,
2153.3, 2397.3, 2852.3, 3246.0
   242.4201.0, 381.3, 470.0, 616.6
   322.8201.0
   381.3201.0, 242.4, 470.0, 616.6
   388.7201.0, 1295.4, 1360.1
   461.7201.0, 470.0, 616.6
   466.5201.0, 616.6
   470.0201.0, 242.4, 381.3, 461.7, 616.6
   600.0201.0, 1083.0
   616.6201.0, 242.4, 381.3, 461.7, 466.5, 470.0, 1066.8
   797.0201.0, 887.0
   801.01083.0
   887.0201.0, 797.0
  1066.8201.0, 616.6
  1083.0201.0, 600.0, 801.0
  1295.4201.0, 388.7
  1304.6201.0
  1360.1201.0, 388.7
  1683.2201.0
  1718.7201.0
  1858.3201.0
  1868.4201.0
  2044.4201.0
  2153.3201.0
  2397.3201.0
  2852.3201.0
  3246.0201.0

Dataset #2:

Author: T.D. Johnson and W.D. Kulp   Citation:Nuclear Data Sheets 129, 1 (2015)

Parent
Nucleus
Parent
E(level)
Parent
Parent
T1/2
Decay Mode GS-GS Q-value
(keV)
Daughter
Nucleus
Decay
Scheme
 
ENSDF
file
 
87
41
Nb
 0.0    (1/2-)   3.75 m 9    β+   5473   
87
40
Zr
 

Beta+:

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




  1886.6 39   4115 8      96.90 % 4   1.828 4 

Mean beta+ energy: 1887 keV 4, total beta+ intensity: 96.90 % 4, mean beta+ dose: 1.828 MeV/Bq-s 4

Electrons:

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



Auger L     2.02      76.7 % 17   0.00155 3 
Auger K    13.4      15.8 % 5   0.00212 7 
CE K   117.2 3       53.6 % 16   0.0628 19 
CE L   132.7 3       15.4 % 4   0.0205 6 
CE M   134.8 3        2.76 % 8   0.00372 11 
CE N   135.1 3        0.350 % 10   4.73E-4 13 
CE K   183.20 20        3.11 %  0.00570
CE L   198.67 20        0.372 %  7.39E-4
CE M   200.77 20        0.0647 %  1.299E-4
CE N   201.15 20        0.00907 %  1.82E-5

Gamma and X-ray radiation:

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



XR l     2.04       2.51 % 8   5.12E-5 17 
XR kα2    15.691      12.7 % 5   0.00199 8 
XR kα1    15.775      24.4 % 10   0.00384 15 
XR kβ3    17.653       1.88 % 7   3.32E-4 13 
XR kβ1    17.667       3.65 % 14   6.45E-4 25 
XR kβ2    17.969       0.74 % 3   1.33E-4 6 
   135.2 3       27.2 % 6   0.0368 8 
   201.2 2       96.4 %  0.19396
Annihil.   511.0     193.80 % 8  

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
   135.2201.2
   201.2135.2