ADOPTED LEVELS, GAMMAS for 166Ta

Author: Coral M. Baglin |  Citation: Nucl. Data Sheets 109, 1103 (2008) |  Cutoff date: 1-Mar-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-4.21×103 keV 3S(n)= 8.32×103 keV 4S(p)= 1.75×103 keV 4Q(α)= 4.31×103 keV 8
Reference: 2012WA38

References:
  A  166W ε decay  B  141Pr(28Si,3nγ)

General Comments:

Levels: band(a) (ν i13/2)#(π h11/2), α=1 band. See comment on signature-partner band.

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
     0.0A  (2)+ 34.4 s 5 
% ε = 100
     
     0.0+X B (9-)        
    53.6+X 8  B (10-)      53.6
  100

     0.0+X
(9-)
   125.79 18 A  1+     125.8 2 
  100
M1+E2
     0.0
(2)+
   147.6+X 8  B (11-)      94.0
  147.6
 
 


    53.6+X
     0.0+X
(10-)
(9-)
   298.3 3 A      172.5 3 
  100
[M1,E2]
   125.79
1+
   320.1+X 10  B (12-)     172.5
  266.5
 
 


   147.6+X
    53.6+X
(11-)
(10-)
   350.34 25 A      224.6 2 
  100
[M1,E2]
   125.79
1+
   395.93 20 A  1+      45.8 4 
   97.6 4 
  270.1 2 
  395.9 3 
   26 8 
   35 4 
   43 4 
  100 2 
[M1]
[M1,E2]
[M1,E2]
[M1,E2]
   350.34
   298.3
   125.79
     0.0


1+
(2)+
   495.0+X 11  B (13-)     174.9
  347.4
 
 


   320.1+X
   147.6+X
(12-)
(11-)
   754.6+X 12  B (14-)     259.6
  434.5
 
 


   495.0+X
   320.1+X
(13-)
(12-)
   992.2+X 13  B (15-)     237.6
  497.3
 
 


   754.6+X
   495.0+X
(14-)
(13-)
  1309.2+X 13  B (16-)     317.0
  554.6
 
 


   992.2+X
   754.6+X
(15-)
(14-)
  1597.8+X 14  B (17-)     288.6
  605.6
 
 


  1309.2+X
   992.2+X
(16-)
(15-)
  1946.3+X 15  B (18-)     348.5
  637.1
 
 


  1597.8+X
  1309.2+X
(17-)
(16-)
  2273.2+X 15  B (19-)     326.9
  675.4
 
 


  1946.3+X
  1597.8+X
(18-)
(17-)
  2626.7+X 16  B (20-)     353.5
  680.4
 
 


  2273.2+X
  1946.3+X
(19-)
(18-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  2972.1+X 17  B (21-)     345.3
  698.8
 
 


  2626.7+X
  2273.2+X
(20-)
(19-)
  3304.9+X 17  B (22-)     332.8
  678.2
 
 


  2972.1+X
  2626.7+X
(21-)
(20-)
  3653.9+X 18  B (23-)     349.0
  681.8
 
 


  3304.9+X
  2972.1+X
(22-)
(21-)
  3972.1+X 19  B (24-)     318.2
  667.2
 
 


  3653.9+X
  3304.9+X
(23-)
(22-)

E(level): From least-squares fit to Eγ.

Jπ(level): Values given without comment are from 141Pr(28Si,3nγ). Bandhead J assumes smooth energy variation with Z for levels with assigned configuration in neighboring isotones. J for higher-energy levels is based on observed band structure.

E(γ): From 141Pr(28Si,3nγ), except as noted. Authors did not state uncertainty.

I(γ): Relative photon intensity normalized to 100 at strongest photon deexciting each level. From 166W ε decay.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - (ν i13/2)#(π h11/2), α=0 band.
    53.6+X 8  (10-)        
   320.1+X 10  (12-)        
   754.6+X 12  (14-)     259.6
  434.5
 
 


   495.0+X
   320.1+X
(13-)
(12-)
  1309.2+X 13  (16-)     317.0
  554.6
 
 


   992.2+X
   754.6+X
(15-)
(14-)
  1946.3+X 15  (18-)     348.5
  637.1
 
 


  1597.8+X
  1309.2+X
(17-)
(16-)
  2626.7+X 16  (20-)     353.5
  680.4
 
 


  2273.2+X
  1946.3+X
(19-)
(18-)
  3304.9+X 17  (22-)     332.8
  678.2
 
 


  2972.1+X
  2626.7+X
(21-)
(20-)
  3972.1+X 19  (24-)     318.2
  667.2
 
 


  3653.9+X
  3304.9+X
(23-)
(22-)

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Additional Gamma Data:















E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityMixing
Ratio
Conversion
Coefficient
Additional Data
   125.79 1+     125.8 2 M1+E20.8 +8-51.98α=1.98 24
   298.3     172.5 3 [M1,E2] 0.71α=0.71 22
   350.34     224.6 2 [M1,E2] 0.32α=0.32 13
   395.93 1+      45.8 4 [M1] 7.21α=7.21 22
1+      97.6 4 [M1,E2] 4.4α=4.4 4
1+     270.1 2 [M1,E2] 0.19α=0.19 8
1+     395.9 3 [M1,E2] 0.07α=0.07 3

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(2)+ 34.4 s 5 
% ε = 100
Assignment: 159Tb(16O,9N), E(16O)=147 MeV, excit (1977Le08).
E(level): Assignment: 159Tb(16O,9N), E(16O)=147 MeV, excit (1977Le08).
    53.6+X(10-)   E(level): (ν i13/2)#(π h11/2), α=0 band.
   320.1+X(12-)   E(level): (ν i13/2)#(π h11/2), α=0 band.
   754.6+X(14-)   E(level): (ν i13/2)#(π h11/2), α=0 band.
  1309.2+X(16-)   E(level): (ν i13/2)#(π h11/2), α=0 band.
  1946.3+X(18-)   E(level): (ν i13/2)#(π h11/2), α=0 band.
  2626.7+X(20-)   E(level): (ν i13/2)#(π h11/2), α=0 band.
  3304.9+X(22-)   E(level): (ν i13/2)#(π h11/2), α=0 band.
  3972.1+X(24-)   E(level): (ν i13/2)#(π h11/2), α=0 band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   125.79   125.8E(γ): From 166W ε decay.
   298.3   172.5E(γ): From 166W ε decay.
   350.34   224.6E(γ): From 166W ε decay.
   395.93    45.8E(γ): From 166W ε decay.
    97.6E(γ): From 166W ε decay.
   270.1E(γ): From 166W ε decay.
   395.9E(γ): From 166W ε decay.

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