ADOPTED LEVELS, GAMMAS for 225Th

Authors: A. K. Jain , R. Raut , J. K. Tuli |  Citation: Nucl. Data Sheets 110, 1409 (2009) |  Cutoff date: 1-Dec-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-2.03×103 keV 8S(n)= 5755 keV 12S(p)= 5213 keV 7Q(α)= 6921.4 keV 22
Reference: 2012WA38

References:
  A  229U α decay  B  226Ra(α,5nγ)

General Comments:

Theoretical calculations in 2007Mi30, 2002Ts01, 1995De13, 1993De18, 1991Cw01, 1989Cw03.

Detailed spectroscopic studies on 225Th was carried out using the reaction 226Ra(α,5n) at a beam energy of 50 MeV. The measurements could establish the level structure of the nucleus upto an excitation energy of 2494 keV and spin 39/2~h. Parity doublets were observed and classified according to simplex (s) quantum number. The results were compared with theoretical calculations in interpreting the nuclear shape. However, the relative excitation of the s=+i band with respect to the ground state could not be established experimentally (1990Hu04).

The level observed at 102 keV in the α-decay, not observed in 1990Hu04. Interpretations in 1988Le13.

Levels: For given s, π=- has greater effective moment of inertia than π=+. For given π, s=-i has larger effective moment of inertia than s=+i, for rotation frequencies <0.18 Mev. For each s, effective moment of inertia converge at a common value.

Q-value: Note: Current evaluation has used the following Q record










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
       0.0AB (3/2+) 8.75 m 4 
% ε ≈ 10
% α ≈ 90
     
      68.4AB (7/2+)      68.4
  100
[E2]
       0.0
(3/2+)
     187.0AB (11/2+)     118.6
  100
E2
      68.4
(7/2+)
     325.6 B (13/2-)     138.6 2 
  100
E1
     187.0
(11/2+)
     370.2 B (15/2+)      44.9 2 
  183.2 2 
 
 

E2
     325.6
     187.0
(13/2-)
(11/2+)
     519.7 B (17/2-)     149.4 2 
  194.1 2 
 
 
E1

     370.2
     325.6
(15/2+)
(13/2-)
     614.3 B (19/2+)      94.8 2 
  244.1 2 
 
 
E1
E2
     519.7
     370.2
(17/2-)
(15/2+)
     768.7 B (21/2-)     154.2 2 
  249.0 2 
 
 
E1

     614.3
     519.7
(19/2+)
(17/2-)
     910.7 B (23/2+)     141.8 2 
  296.4 2 
 
 
E1

     768.7
     614.3
(21/2-)
(19/2+)
    1072.2 B (25/2-)     161.9 2 
  303.5 2 
 
 
E1

     910.7
     768.7
(23/2+)
(21/2-)
    1251.3 B (27/2+)     178.8 2 
  340.6 5 
 
 


    1072.2
     910.7
(25/2-)
(23/2+)
    1426.3 B (29/2-)     174.9 2 
  354.1 2 
 
 


    1251.3
    1072.2
(27/2+)
(25/2-)
    1631.8 B (31/2+)     205.4 2 
  380.5 5 
 
 


    1426.3
    1251.3
(29/2-)
(27/2+)
    1824.5 B (33/2-)     193.1 2 ?
  398.2 5 
 
 


    1631.8
    1426.3
(31/2+)
(29/2-)
    2047.2? B (35/2+)     222.7 5 ?
  415.4 5 ?
 
 


    1824.5
    1631.8
(33/2-)
(31/2+)
    2259.1? B (37/2-)     211.6 2 ?
  434.6 5 ?
 
 


    2047.2
    1824.5
(35/2+)
(33/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
    2494.4? B (39/2+)     234.9 2 ?
  447.2 5 ?
 
 


    2259.1
    2047.2
(37/2-)
(35/2+)
       XAB (5/2+)        
   X+103.5AB (9/2+)     103.5
  100
E2
       X
(5/2+)
   X+222.8 B (11/2-)     119.3 2 
  100
E1
   X+103.5
(9/2+)
   X+271.1 B (13/2+)      48.1 2 
  167.6 2 
 
 

E2
   X+222.8
   X+103.5
(11/2-)
(9/2+)
   X+401.6 B (15/2-)     131.1 2 
  178.8 2 ?
 
 
E1

   X+271.1
   X+222.8
(13/2+)
(11/2-)
   X+498.1 B (17/2+)      95.9 2 
  227.0 2 
 
 
E1
E2
   X+401.6
   X+271.1
(15/2-)
(13/2+)
   X+636.5 B (19/2-)     138.6 2 
  234.9 2 
 
 
E1

   X+498.1
   X+401.6
(17/2+)
(15/2-)
   X+775.6 B (21/2+)     138.6 2 
  277.5 2 
 
 
E1

   X+636.5
   X+498.1
(19/2-)
(17/2+)
   X+925.2 B (23/2-)     149.8
  288.7 5 
 
 


   X+775.6
   X+636.5
(21/2+)
(19/2-)
  X+1096 B (25/2+)     170.3 2 
  320.4 2 
 
 


   X+925.2
   X+775.6
(23/2-)
(21/2+)
  X+1259.3 B (27/2-)     163.9 2 
  334.1 2 
 
 


  X+1096
   X+925.2
(25/2+)
(23/2-)
  X+1454.2? B (29/2+)     194.1 2 ?
  358.2 5 ?
 
 


  X+1259.3
  X+1096
(27/2-)
(25/2+)
  X+1626.3? B (31/2-)     173.2 2 ?
  367.0 2 ?
 
 


  X+1454.2
  X+1259.3
(29/2+)
(27/2-)
  X+1839.1? B (33/2+)     211.6 2 ?
  384.9 5 ?
 
 


  X+1626.3
  X+1454.2
(31/2-)
(29/2+)
  X+2020.1? B (35/2-)     393.8 5 ?
 

  X+1626.3
(31/2-)

E(level): From 1990Hu04

Jπ(level): From 1990Hu04. Deduced under the assumption of stretched transition.

E(γ): Uncertainty in γ-energies is 0.2 keV for strong lines and upto 0.5 keV for weak lines. Lines with intensities around 1.0 has been considered as weak lines in this dataset.

M(γ): Multipolarities from conversion electron measurements, (L1+L2)/L3 intensity ratios and (L1+L2) conversion coefficients.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - s=-i, π=+ band
       0.0 (3/2+) 8.75 m 4 
% ε ≈ 10
% α ≈ 90
     
      68.4 (7/2+)      68.4
  100
[E2]
       0.0
(3/2+)
     187.0 (11/2+)     118.6
  100
E2
      68.4
(7/2+)
     370.2 (15/2+)      44.9 2 
  183.2 2 
 
 

E2
     325.6
     187.0
(13/2-)
(11/2+)
     614.3 (19/2+)      94.8 2 
  244.1 2 
 
 
E1
E2
     519.7
     370.2
(17/2-)
(15/2+)
     910.7 (23/2+)     141.8 2 
  296.4 2 
 
 
E1

     768.7
     614.3
(21/2-)
(19/2+)
    1251.3 (27/2+)     178.8 2 
  340.6 5 
 
 


    1072.2
     910.7
(25/2-)
(23/2+)
    1631.8 (31/2+)     205.4 2 
  380.5 5 
 
 


    1426.3
    1251.3
(29/2-)
(27/2+)
    2047.2 (35/2+)     222.7 5 ?
  415.4 5 ?
 
 


    1824.5
    1631.8
(33/2-)
(31/2+)
    2494.4 (39/2+)     234.9 2 ?
  447.2 5 ?
 
 


    2259.1
    2047.2
(37/2-)
(35/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - s=-i, π=- band
     325.6 (13/2-)        
     519.7 (17/2-)     149.4 2 
  194.1 2 
 
 
E1

     370.2
     325.6
(15/2+)
(13/2-)
     768.7 (21/2-)     154.2 2 
  249.0 2 
 
 
E1

     614.3
     519.7
(19/2+)
(17/2-)
    1072.2 (25/2-)     161.9 2 
  303.5 2 
 
 
E1

     910.7
     768.7
(23/2+)
(21/2-)
    1426.3 (29/2-)     174.9 2 
  354.1 2 
 
 


    1251.3
    1072.2
(27/2+)
(25/2-)
    1824.5 (33/2-)     193.1 2 ?
  398.2 5 
 
 


    1631.8
    1426.3
(31/2+)
(29/2-)
    2259.1 (37/2-)     211.6 2 ?
  434.6 5 ?
 
 


    2047.2
    1824.5
(35/2+)
(33/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - s=+i, π=+ band
       X (5/2+)        
   X+103.5 (9/2+)     103.5
  100
E2
       X
(5/2+)
   X+271.1 (13/2+)      48.1 2 
  167.6 2 
 
 

E2
   X+222.8
   X+103.5
(11/2-)
(9/2+)
   X+498.1 (17/2+)      95.9 2 
  227.0 2 
 
 
E1
E2
   X+401.6
   X+271.1
(15/2-)
(13/2+)
   X+775.6 (21/2+)     138.6 2 
  277.5 2 
 
 
E1

   X+636.5
   X+498.1
(19/2-)
(17/2+)
  X+1096 (25/2+)     170.3 2 
  320.4 2 
 
 


   X+925.2
   X+775.6
(23/2-)
(21/2+)
  X+1454.2 (29/2+)     194.1 2 ?
  358.2 5 ?
 
 


  X+1259.3
  X+1096
(27/2-)
(25/2+)
  X+1839.1 (33/2+)     211.6 2 ?
  384.9 5 ?
 
 


  X+1626.3
  X+1454.2
(31/2-)
(29/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - s=+i, π=- band
   X+222.8 (11/2-)        
   X+401.6 (15/2-)     131.1 2 
  178.8 2 ?
 
 
E1

   X+271.1
   X+222.8
(13/2+)
(11/2-)
   X+636.5 (19/2-)     138.6 2 
  234.9 2 
 
 
E1

   X+498.1
   X+401.6
(17/2+)
(15/2-)
   X+925.2 (23/2-)     149.8
  288.7 5 
 
 


   X+775.6
   X+636.5
(21/2+)
(19/2-)
  X+1259.3 (27/2-)     163.9 2 
  334.1 2 
 
 


  X+1096
   X+925.2
(25/2+)
(23/2-)
  X+1626.3 (31/2-)     173.2 2 ?
  367.0 2 ?
 
 


  X+1454.2
  X+1259.3
(29/2+)
(27/2-)
  X+2020.1 (35/2-)     393.8 5 ?
 

  X+1626.3
(31/2-)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
      68.4 (7/2+)      68.4[E2]68.0α=68.0
     187.0 (11/2+)     118.6E25.36α=5.36 8
     325.6 (13/2-)     138.6 2 E10.226α=0.226 4
     370.2 (15/2+)     183.2 2 E20.914α=0.914 14
     519.7 (17/2-)     149.4 2 E10.189α=0.189 3
     614.3 (19/2+)      94.8 2 E10.1351α=0.1351 21
(19/2+)     244.1 2 E20.327α=0.327 5
     768.7 (21/2-)     154.2 2 E10.175α=0.175 3
     910.7 (23/2+)     141.8 2 E10.214α=0.214 3
    1072.2 (25/2-)     161.9 2 E10.1558α=0.1558 23
   X+103.5 (9/2+)     103.5E29.60α=9.60 14
   X+222.8 (11/2-)     119.3 2 E10.323α=0.323 5
   X+271.1 (13/2+)     167.6 2 E21.288α=1.288 19
   X+401.6 (15/2-)     131.1 2 E10.258α=0.258 4
   X+498.1 (17/2+)      95.9 2 E10.1311α=0.1311 20
(17/2+)     227.0 2 E20.419α=0.419 6
   X+636.5 (19/2-)     138.6 2 E10.226α=0.226 4
   X+775.6 (21/2+)     138.6 2 E10.226α=0.226 4

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
       0.0(3/2+) 8.75 m 4 
% ε ≈ 10
% α ≈ 90
E(level): s=-i, π=+ band.
      68.4(7/2+)   E(level): s=-i, π=+ band.
     187.0(11/2+)   E(level): s=-i, π=+ band.
     325.6(13/2-)   E(level): s=-i, π=- band.
     370.2(15/2+)   E(level): s=-i, π=+ band.
     519.7(17/2-)   E(level): s=-i, π=- band.
     614.3(19/2+)   E(level): s=-i, π=+ band.
     768.7(21/2-)   E(level): s=-i, π=- band.
     910.7(23/2+)   E(level): s=-i, π=+ band.
    1072.2(25/2-)   E(level): s=-i, π=- band.
    1251.3(27/2+)   E(level): s=-i, π=+ band.
    1426.3(29/2-)   E(level): s=-i, π=- band.
    1631.8(31/2+)   E(level): s=-i, π=+ band.
    1824.5(33/2-)   E(level): s=-i, π=- band.
    2047.2(35/2+)   E(level): s=-i, π=+ band.
    2259.1(37/2-)   E(level): s=-i, π=- band.
    2494.4(39/2+)   E(level): s=-i, π=+ band.
       X(5/2+)   E(level): s=+i, π=+ band.
   X+103.5(9/2+)   E(level): s=+i, π=+ band.
   X+222.8(11/2-)   E(level): s=+i, π=- band.
   X+271.1(13/2+)   E(level): s=+i, π=+ band.
   X+401.6(15/2-)   E(level): s=+i, π=- band.
   X+498.1(17/2+)   E(level): s=+i, π=+ band.
   X+636.5(19/2-)   E(level): s=+i, π=- band.
   X+775.6(21/2+)   E(level): s=+i, π=+ band.
E(level)Jπ(level)T1/2(level)Comments
   X+925.2(23/2-)   E(level): s=+i, π=- band.
  X+1096(25/2+)   E(level): s=+i, π=+ band.
  X+1259.3(27/2-)   E(level): s=+i, π=- band.
  X+1454.2(29/2+)   E(level): s=+i, π=+ band.
  X+1626.3(31/2-)   E(level): s=+i, π=- band.
  X+1839.1(33/2+)   E(level): s=+i, π=+ band.
  X+2020.1(35/2-)   E(level): s=+i, π=- band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
      68.4      68.4E(γ): From the level scheme of 1990Hu04. Not listed in the table.
I(γ): Set 100 (β. Singh)
     187.0     118.6I(γ): Set 100 (β. Singh)
     325.6     138.6E(γ): Multiply placed
I(γ): Iγ(103 gate)=39 4, Iγ(118 gate)=47 5
     370.2      44.9I(γ): Iγ(103 gate)=3.0 6, Iγ(118 gate)=10 2
     183.2I(γ): Iγ(103 gate)=6.4 7 Iγ(118 gate)=21
     519.7     149.4I(γ): Iγ(103 gate)=18 2, Iγ(118 gate)=38 4
     194.1E(γ): Multiply placed
I(γ): Iγ(103 gate)=2.1 7, Iγ(118 gate)=3.3 12
     614.3      94.8I(γ): Iγ(103 gate)=11.7 12, Iγ(118 gate)=24 4
     244.1I(γ): Iγ(103 gate)=3.6 4, Iγ(118 gate)=14.0 14
     768.7     154.2I(γ): Iγ(103 gate)=9.0 9, Iγ(118 gate)=26 3
     249.0I(γ): Iγ(103 gate)=3.6 4, Iγ(118 gate)=5.9 6
     910.7     141.8I(γ): Iγ(103 gate)=5.0 5, Iγ(118 gate)=14.9 15
     296.4I(γ): Iγ(103 gate)=≈2, Iγ(118 gate)=6.1 12
    1072.2     161.9I(γ): Iγ(103 gate)=3.8 5, Iγ(118 gate)=12.3 12
     303.5I(γ): Iγ(103 gate)=5.3 8, Iγ(118 gate)=8.9 9
    1251.3     178.8E(γ): Multiply placed
I(γ): Iγ(103 gate)=2.9 4, Iγ(118 gate)=7.0 7
     340.6I(γ): Iγ(103 gate)=0.9 3, Iγ(118 gate)=4.7 7
    1426.3     174.9I(γ): Iγ(103 gate)=4.4 8, Iγ(118 gate)=5.9 6
     354.1I(γ): Iγ(103 gate)=1.4 5, Iγ(118 gate)=4.7 5
    1631.8     205.4I(γ): Iγ(103 gate)=5.2 7, Iγ(118 gate)=4.7 10
     380.5I(γ): Iγ(103 gate)=0.5 3, Iγ(118 gate)=2.4 4
    1824.5     193.1I(γ): Iγ(103 gate)=8.4 13, Iγ(118 gate)=8.1 12
     398.2I(γ): Iγ(103 gate)=1.1 3, Iγ(118 gate)=2.4 4
    2047.2     222.7I(γ): Iγ(103 gate)=0.8 4, Iγ(118 gate)=2.9 6
     415.4I(γ): Iγ(103 gate)=1.6 4, Iγ(118 gate)=1.2 3
E(level)E(gamma)Comments
    2259.1     211.6E(γ): Multiply placed
I(γ): Iγ(103 gate)=2.7 3, Iγ(118 gate)=2.5 3
     434.6I(γ): Iγ(103 gate)=1.0 3, Iγ(118 gate)=1.4 3
    2494.4     234.9E(γ): Multiply placed
I(γ): Iγ(103 gate)=3.9 4, Iγ(118 gate)=2.4 4
     447.2I(γ): Iγ(103 gate)=0.7 2, Iγ(118 gate)=1.2 3
   X+103.5     103.5I(γ): Set 100 (β. Singh)
   X+222.8     119.3I(γ): Iγ(103 gate)=30 3. Set 100 (β. Singh)
   X+271.1      48.1I(γ): Iγ(103 gate)=16 3
     167.6I(γ): Iγ(103 gate)=13 1
   X+401.6     131.1I(γ): Iγ(103 gate)=28 3, Iγ(118 gate)=9.5 10
     178.8E(γ): Multiply placed
I(γ): Iγ(103 gate)=2.9 4, Iγ(118 gate)=7.0 7
   X+498.1      95.9I(γ): Iγ(103 gate)=27 3, Iγ(118 gate)=8 3
     227.0I(γ): Iγ(103 gate)=11 2, Iγ(118 gate)=3.4 11
   X+636.5     138.6E(γ): Multiply placed
I(γ): Iγ(103 gate)=39 4, Iγ(118 gate)=47 5
     234.9E(γ): Multiply placed
I(γ): Iγ(103 gate)=3.9 4, Iγ(118 gate)=2.4 4
   X+775.6     138.6E(γ): Multiply placed
I(γ): Iγ(103 gate)=39 4, Iγ(118 gate)=47 5
     277.5I(γ): Iγ(103 gate)=7.1 7, Iγ(118 gate)=2.5 5
   X+925.2     288.7I(γ): Iγ(103 gate)=5.2 5, Iγ(118 gate)=0.8 4
  X+1096     170.3I(γ): Iγ(103 gate)=8.5 9, Iγ(118 gate)=7.8 8
     320.4I(γ): Iγ(103 gate)=4.2 6, Iγ(118 gate)=2.1 3
  X+1259.3     163.9I(γ): Iγ(103 gate)=1.9 4, Iγ(118 gate)=2.3 3
     334.1I(γ): Iγ(103 gate)=3.5 4, Iγ(118 gate)=1.2 3
  X+1454.2     194.1E(γ): Multiply placed
I(γ): Iγ(103 gate)=2.1 7, Iγ(118 gate)=3.3 12
     358.2I(γ): Iγ(103 gate)=1.8 9, Iγ(118 gate)=1.1 4
  X+1626.3     173.2I(γ): Iγ(103 gate)=7.5 10, Iγ(118 gate)=6.7 7
     367.0I(γ): Iγ(103 gate)=3.8 4, Iγ(118 gate)=2.8 3
E(level)E(gamma)Comments
  X+1839.1     211.6E(γ): Multiply placed
I(γ): Iγ(103 gate)=2.7 3, Iγ(118 gate)=2.5 3
     384.9I(γ): Iγ(103 gate)=1.2 3, Iγ(118 gate)=0.9 3
  X+2020.1     393.8I(γ): Iγ(103 gate)=1.3 3, Iγ(118 gate)=0.6 3

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