ADOPTED LEVELS, GAMMAS for 161Ta

Author: C. W. Reich |  Citation: Nucl. Data Sheets 112,2497 (2011) |  Cutoff date: 1-Jun-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-8.15×103 keV SYS(n)= 1.090×104 keV 8S(p)= 59 keV 24Q(α)= 5.33×103 keV 3
Reference: 2012WA38

References:
  A  165Re α decay  B  165Re α decay (2.32 S)
  C  106Cd(58Ni,3PG) 

General Comments:

α recent study (d. O’Donnell et al., (to be published); d.t. Joss, R.d. Page and d. O’Donnell (private communication, June, 2011)) has led to new insights regarding the (1/2+) and (11/2-) states in 161Ta. In particular, they indicate that the decay data previously reported for the (1/2+) state in 161Ta are to be associated with the (11/2-) state instead. At present, then, there are no decay data known for this (1/2+) state.

All data on the excited states above the (11/2-) level are from the 106Cd(58Ni,3pγ) study of 2011La01. See that source data set for additional details. From considerations of the systematics of the yrast bands in the heavier odd-A Ta isotopes, 2011La01 propose that there is a 9/2- level below the (11/2-) level. This level has not yet been directly observed.

Levels: For the labeling of the quasiparticle orbitals used here, see the 106Cd(58Ni,3pγ) source data set.

Levels: band(a) πh11/2 band, α=+1/2 branch. See the comment on the α=-1/2 branch. Conf is fEF or fAB.

Levels: band(b) Band based on (29/2-), α=-1/2. Possible conf is fAB |) fABEF.

Levels: band(d) Band based on (25/2+), α=-1/2 branch. Possible conf is fAF.

Levels: band(e) Tentative band based on (29/2+), α=-1/2 branch. Possible conf is fAE.

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

Q-value: The uncertainties assigned to these estimated values by 2009AuZZ are as follows: for Q(β-), 203; for S(n), 104; and, for S(p), 53.

Q-value: 2003Au03 report the following values (all from systematics): Q(β-)=8330 200; S(n)=10930 110; S(p)=90 50; and Q(α)=5320 60.










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
       0SA   (1/2+) % ε = ?
% α = ?
     
       X BC (11/2-) 3.08 s 11 
% ε = ?
% α = ?
     
     396.0+X 5   C (13/2-)      396.1 5 
  100
M1+E2
       X
(11/2-)
     482.8+X 5   C (15/2-)       86.9 20 
   482.7 5 
    1.0 1 
  100.0 3 
M1+E2
E2
     396.0+X
       X
(13/2-)
(11/2-)
     956.2+X 5   C (17/2-)      473.3 5 
   560.4 5 
  100 5 
   83 4 
M1+E2
E2
     482.8+X
     396.0+X
(15/2-)
(13/2-)
    1083.2+X 6   C (19/2-)      127.5 20 
   600.4 5 
    2.2 13 
  100 5 
M1+E2
E2
     956.2+X
     482.8+X
(17/2-)
(15/2-)
    1583.4+X 6   C (21/2-)      500.4 5 
   627.1 5 
   81.5 4 
  100 5 
M1+E2

    1083.2+X
     956.2+X
(19/2-)
(17/2-)
    1677.4+X 11   C     1194.6 10 
  100

     482.8+X
(15/2-)
    1763.6+X 7   C (23/2-)      180.0 10 
   680.2 5 
    8 4 
  100 4 
M1+E2
E2
    1583.4+X
    1083.2+X
(21/2-)
(19/2-)
    1794.5+X 9   C (19/2+)      838.3 10 
  100
E1
     956.2+X
(17/2-)
    1994.8+X 11   C (21/2+)      911.5 10 
  100
E1
    1083.2+X
(19/2-)
    2073.2+X 7   C (21/2+)      278.7 20 
   990.0 5 
   12 2 
  100 4 
M1+E2
E1
    1794.5+X
    1083.2+X
(19/2+)
(19/2-)
    2176.4+X 7   C (25/2-)      412.4 5 
   593.0 5 
   60 3 
  100 5 
M1+E2
E2
    1763.6+X
    1583.4+X
(23/2-)
(21/2-)
    2243.6+X 7   C (23/2+)      170.7 20 
   449.2 10 
   660.4 5 
    8.4 9 
   61 4 
  100 6 
M1+E2
E2

    2073.2+X
    1794.5+X
    1583.4+X
(21/2+)
(19/2+)
(21/2-)
    2321.2+X 21   C     1238.0 20 
  100

    1083.2+X
(19/2-)
    2467.7+X 8   C (27/2-)      291.1 10 
   704.1 5 
   24.8 16 
  100 5 

E2
    2176.4+X
    1763.6+X
(25/2-)
(23/2-)
    2494.5+X 11   C (25/2+)      251.7 10 
   422.0 20 
   499.7 20 
  100 9 
   74 9 
   57 13 
M1+E2


    2243.6+X
    2073.2+X
    1994.8+X
(23/2+)
(21/2+)
(21/2+)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
    2528.3+X 9   C (25/2+)      285.4 20 
   454.7 20 
   764.4 10 
   21.0 12 
   23.5 25 
  100 7 
M1+E2
E2
E1
    2243.6+X
    2073.2+X
    1763.6+X
(23/2+)
(21/2+)
(23/2-)
    2537.6+X 9   C (25/2+)       44S
   293.7 10 
   773.9 10 
 
   74 3 
  100 6 

M1+E2

    2494.5+X
    2243.6+X
    1763.6+X
(25/2+)
(23/2+)
(23/2-)
    2652.1+X 11   C (27/2+)      114.9 10 
  100
M1+E2
    2537.6+X
(25/2+)
    2741.8+X 8   C (27/2+)      213.4 10 
   498.7 10 
   565.4 5 
   41 2 
   62 3 
  100 5 
M1+E2
E2
E1
    2528.3+X
    2243.6+X
    2176.4+X
(25/2+)
(23/2+)
(25/2-)
    2760.3+X 10   C (29/2-)      293.0 10 
   583.6 10 
   32 2 
  100 6 
M1+E2
E2
    2467.7+X
    2176.4+X
(27/2-)
(25/2-)
    2817.4+X 10   C (29/2+)       75.8 20 
   165.6 10 
   288.8 20 
   349.2 10 
   42 4 
  100 4 
   79 4 
   83 4 

E2
E2
E1
    2741.8+X
    2652.1+X
    2528.3+X
    2467.7+X
(27/2+)
(27/2+)
(25/2+)
(27/2-)
    2891.9+X 14   C (29/2+)      240.0 10 
  100

    2652.1+X
(27/2+)
    3016.7+X 11   C (31/2+)      125.6 20 
   199.3 5 
    1.6 8 
  100 4 

M1+E2
    2891.9+X
    2817.4+X
(29/2+)
(29/2+)
    3089.8+X 11   C (31/2-)      329.6 10 
   622.0 10 
   44 4 
  100 7 
M1+E2

    2760.3+X
    2467.7+X
(29/2-)
(27/2-)
  3169+X 4   C (29/2-)        
    3261.2+X 13   C (31/2-)      793.5 10 
  100

    2467.7+X
(27/2-)
    3343.8+X 11   C (33/2+)      327.1 5 
   526.3 10 
  100 5 
   33.6 25 
M1+E2

    3016.7+X
    2817.4+X
(31/2+)
(29/2+)
    3443.5+X 12   C (33/2-)      354.2 20 
   683.0 10 
   18.2 15 
  100 6 

E2
    3089.8+X
    2760.3+X
(31/2-)
(29/2-)
  3447+X 3   C (31/2-)      278.7 20 
  100

  3169+X
(29/2-)
    3467.2+X 24   C      575.3 20 
  100

    2891.9+X
(29/2+)
    3573.7+X 12   C (35/2+)      229.9 10 
   557.0 5 
   84 4 
  100 5 
M1+E2

    3343.8+X
    3016.7+X
(33/2+)
(31/2+)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
    3689.2+X 22   C (33/2-)      241.8 20 
  100

  3447+X
(31/2-)
    3762.2+X 13   C (35/2-)      318.4 20 
   672.5 10 
  100
  100


    3443.5+X
    3089.8+X
(33/2-)
(31/2-)
  3872+X 3 ?  C      405.3 20 
  100

    3467.2+X

    3941.7+X 12   C (37/2+)      368.0 5 
   598.0 10 
  100 4 
   46 3 
M1+E2

    3573.7+X
    3343.8+X
(35/2+)
(33/2+)
    4023.5+X 16   C (35/2-)      334.5 20 
   761.9 10 
   63 4 
  100 7 

E2
    3689.2+X
    3261.2+X
(33/2-)
(31/2-)
    4058.8+X 16   C (35/2-)      798.0 10 
  100

    3261.2+X
(31/2-)
  4098+X 3 ?  C      227.1 20 
   631.2 10 
   27 5 
  100 9 


  3872+X
    3467.2+X


    4202.7+X 13   C (39/2+)      261.4 10 
   629.0 5 
   44 3 
  100 5 
M1+E2

    3941.7+X
    3573.7+X
(37/2+)
(35/2+)
    4218.1+X 14   C (37/2-)      455.8 20 
   774.6 10 
   13 4 
  100 5 

E2
    3762.2+X
    3443.5+X
(35/2-)
(33/2-)
    4313.9+X 19   C (37/2-)      256.7 20 
   289.6 20 
   624.6 20 
   31 5 
  100 5 
   84 11 

M1+E2

    4058.8+X
    4023.5+X
    3689.2+X
(35/2-)
(35/2-)
(33/2-)
  4445+X 3 ?  C      346.4 20 
   572.8 20 
  100 8 
   75 16 


  4098+X
  3872+X


    4496.6+X 15   C (39/2-)      278.6 10 
   734.4 10 
   77 4 
  100 8 


    4218.1+X
    3762.2+X
(37/2-)
(35/2-)
    4544.3+X 14   C (41/2+)      341.9 10 
   602.3 10 
  100 5 
   90 5 
M1+E2

    4202.7+X
    3941.7+X
(39/2+)
(37/2+)
    4673.6+X 19   C (39/2-)      359.8 10 
   649.4 20 
  100 7 
   53 7 
M1+E2

    4313.9+X
    4023.5+X
(37/2-)
(35/2-)
  4770+X 4 ?  C      671.5 20 
  100

  4098+X

    4864.4+X 15   C (43/2+)      320.1 10 
   661.6 10 
  100 4 
   58 5 
M1+E2

    4544.3+X
    4202.7+X
(41/2+)
(39/2+)
    4980.7+X 20   C (41/2-)      307.2 10 
   666.7 10 
  100 8 
   92 8 
M1+E2

    4673.6+X
    4313.9+X
(39/2-)
(37/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  5061+X 4 ?  C      616.0 20 
  100

  4445+X

    5070.9+X 25   C (41/2-)      852.8 20 
  100

    4218.1+X
(37/2-)
    5088.5+X 25   C      870.4 20 
  100

    4218.1+X
(37/2-)
    5289.6+X 25   C (43/2-)      793 2 
 

    4496.6+X
(39/2-)
    5328.4+X 21   C (43/2-)      347.7 10 
   654.7 20 
  100 7 
   21 7 
M1+E2

    4980.7+X
    4673.6+X
(41/2-)
(39/2-)
    5653.9+X 25   C (45/2-)      325.5 20 
   673.2 20 
   89 11 
  100 11 
M1+E2

    5328.4+X
    4980.7+X
(43/2-)
(41/2-)
  6024+X 3   C (47/2-)      370.3 10 
  100

    5653.9+X
(45/2-)
  6093+X 4   C (47/2-)      803.2 20 
  100

    5289.6+X
(43/2-)
  6382+X 3   C (49/2-)      358.2 10 
   728.0 20 
  100 9 
   86 18 


  6024+X
    5653.9+X
(47/2-)
(45/2-)
  6764+X 3   C (51/2-)      382.1 20 
   739.0 20 
  100 8 
   83 17 


  6382+X
  6024+X
(49/2-)
(47/2-)

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - πh11/2 band, α=-1/2 branch.
     482.8+X 5  (15/2-)        
    1083.2+X 6  (19/2-)        
    1763.6+X 7  (23/2-)      180.0 10 
   680.2 5 
    8 4 
  100 4 
M1+E2
E2
    1583.4+X
    1083.2+X
(21/2-)
(19/2-)
    2467.7+X 8  (27/2-)      291.1 10 
   704.1 5 
   24.8 16 
  100 5 

E2
    2176.4+X
    1763.6+X
(25/2-)
(23/2-)
    3089.8+X 11  (31/2-)      329.6 10 
   622.0 10 
   44 4 
  100 7 
M1+E2

    2760.3+X
    2467.7+X
(29/2-)
(27/2-)
    3762.2+X 13  (35/2-)      318.4 20 
   672.5 10 
  100
  100


    3443.5+X
    3089.8+X
(33/2-)
(31/2-)
    4496.6+X 15  (39/2-)      278.6 10 
   734.4 10 
   77 4 
  100 8 


    4218.1+X
    3762.2+X
(37/2-)
(35/2-)
    5289.6+X 25  (43/2-)      793 2 
 

    4496.6+X
(39/2-)
  6093+X 4  (47/2-)      803.2 20 
  100

    5289.6+X
(43/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Band based on (29/2-), α=+1/2.
  3169+X 4  (29/2-)        
    3689.2+X 22  (33/2-)        
    4313.9+X 19  (37/2-)      256.7 20 
   289.6 20 
   624.6 20 
   31 5 
  100 5 
   84 11 

M1+E2

    4058.8+X
    4023.5+X
    3689.2+X
(35/2-)
(35/2-)
(33/2-)
    4980.7+X 20  (41/2-)      307.2 10 
   666.7 10 
  100 8 
   92 8 
M1+E2

    4673.6+X
    4313.9+X
(39/2-)
(37/2-)
    5653.9+X 25  (45/2-)      325.5 20 
   673.2 20 
   89 11 
  100 11 
M1+E2

    5328.4+X
    4980.7+X
(43/2-)
(41/2-)
  6382+X 3  (49/2-)      358.2 10 
   728.0 20 
  100 9 
   86 18 


  6024+X
    5653.9+X
(47/2-)
(45/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Band based on (19/2+).
    1794.5+X 9  (19/2+)        
    2073.2+X 7  (21/2+)        
    2243.6+X 7  (23/2+)      170.7 20 
   449.2 10 
   660.4 5 
    8.4 9 
   61 4 
  100 6 
M1+E2
E2

    2073.2+X
    1794.5+X
    1583.4+X
(21/2+)
(19/2+)
(21/2-)
    2528.3+X 9  (25/2+)      285.4 20 
   454.7 20 
   764.4 10 
   21.0 12 
   23.5 25 
  100 7 
M1+E2
E2
E1
    2243.6+X
    2073.2+X
    1763.6+X
(23/2+)
(21/2+)
(23/2-)
    2741.8+X 8  (27/2+)      213.4 10 
   498.7 10 
   565.4 5 
   41 2 
   62 3 
  100 5 
M1+E2
E2
E1
    2528.3+X
    2243.6+X
    2176.4+X
(25/2+)
(23/2+)
(25/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - Band based on (25/2+), α=+1/2 branch.
    2537.6+X 9  (25/2+)        
    2817.4+X 10  (29/2+)        
    3343.8+X 11  (33/2+)      327.1 5 
   526.3 10 
  100 5 
   33.6 25 
M1+E2

    3016.7+X
    2817.4+X
(31/2+)
(29/2+)
    3941.7+X 12  (37/2+)      368.0 5 
   598.0 10 
  100 4 
   46 3 
M1+E2

    3573.7+X
    3343.8+X
(35/2+)
(33/2+)
    4544.3+X 14  (41/2+)      341.9 10 
   602.3 10 
  100 5 
   90 5 
M1+E2

    4202.7+X
    3941.7+X
(39/2+)
(37/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - Tentative band based on (29/2+), α=+1/2 branch.
    2891.9+X 14  (29/2+)        
    3467.2+X 24         
  3872+X 3       405.3 20 
  100

    3467.2+X

  4098+X 3       227.1 20 
   631.2 10 
   27 5 
  100 9 


  3872+X
    3467.2+X


  4770+X 4       671.5 20 
  100

  4098+X

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
       0(1/2+) % ε = ?
% α = ?
The previously reported (2005Sc22) α branch from the 165Re g.s. has not been confirmed in a subsequent study (d. O’Donnell et al., (to be published); d.t. Joss, R.d. Page and d. O’Donnell, (private communication, June, 2011)) by some of the same authors as 2005Sc22. The evaluator assumes that the existence of an α branch from the 165Re g.s. leading to this state is presently an open question.
E(level): The previously reported (2005Sc22) α branch from the 165Re g.s. has not been confirmed in a subsequent study (d. O’Donnell et al., (to be published); d.t. Joss, R.d. Page and d. O’Donnell, (private communication, June, 2011)) by some of the same authors as 2005Sc22. The evaluator assumes that the existence of an α branch from the 165Re g.s. leading to this state is presently an open question.
       X(11/2-) 3.08 s 11 
% ε = ?
% α = ?
From the study of O’Donnell et al. (see above), the 5148 3 α transition is to be associated with the decay of this level rather than from the decay of the (1/2+) state, as previously proposed.
E(level): From the study of O’Donnell et al. (see above), the 5148 3 α transition is to be associated with the decay of this level rather than from the decay of the (1/2+) state, as previously proposed.
     482.8+X(15/2-)   E(level): πh11/2 band, α=-1/2 branch.
    1083.2+X(19/2-)   E(level): πh11/2 band, α=-1/2 branch.
    1763.6+X(23/2-)   E(level): πh11/2 band, α=-1/2 branch.
    1794.5+X(19/2+)   E(level): Band based on (19/2+).
    2073.2+X(21/2+)   E(level): Band based on (19/2+).
    2243.6+X(23/2+)   E(level): Band based on (19/2+).
    2467.7+X(27/2-)   E(level): πh11/2 band, α=-1/2 branch.
    2528.3+X(25/2+)   E(level): Band based on (19/2+).
    2537.6+X(25/2+)   E(level): Band based on (25/2+), α=+1/2 branch.
    2741.8+X(27/2+)   E(level): Band based on (19/2+).
    2817.4+X(29/2+)   E(level): Band based on (25/2+), α=+1/2 branch.
    2891.9+X(29/2+)   E(level): Tentative band based on (29/2+), α=+1/2 branch.
    3089.8+X(31/2-)   E(level): πh11/2 band, α=-1/2 branch.
  3169+X(29/2-)   E(level): Band based on (29/2-), α=+1/2.
    3343.8+X(33/2+)   E(level): Band based on (25/2+), α=+1/2 branch.
    3467.2+X   E(level): Tentative band based on (29/2+), α=+1/2 branch.
    3689.2+X(33/2-)   E(level): Band based on (29/2-), α=+1/2.
    3762.2+X(35/2-)   E(level): πh11/2 band, α=-1/2 branch.
  3872+X   E(level): Tentative band based on (29/2+), α=+1/2 branch.
    3941.7+X(37/2+)   E(level): Band based on (25/2+), α=+1/2 branch.
  4098+X   E(level): Tentative band based on (29/2+), α=+1/2 branch.
    4313.9+X(37/2-)   E(level): Band based on (29/2-), α=+1/2.
    4496.6+X(39/2-)   E(level): πh11/2 band, α=-1/2 branch.
E(level)Jπ(level)T1/2(level)Comments
    4544.3+X(41/2+)   E(level): Band based on (25/2+), α=+1/2 branch.
  4770+X   E(level): Tentative band based on (29/2+), α=+1/2 branch.
    4980.7+X(41/2-)   E(level): Band based on (29/2-), α=+1/2.
    5289.6+X(43/2-)   E(level): πh11/2 band, α=-1/2 branch.
    5653.9+X(45/2-)   E(level): Band based on (29/2-), α=+1/2.
  6093+X(47/2-)   E(level): πh11/2 band, α=-1/2 branch.
  6382+X(49/2-)   E(level): Band based on (29/2-), α=+1/2.

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