ADOPTED LEVELS, GAMMAS for 169Ir

Author: Coral M. Baglin |  Citation: Nucl. Data Sheets 109, 2033 (2008) |  Cutoff date: 15-Jun-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-9.57×103 keV SYS(n)= 1.143×104 keV 8S(p)= -620 keV 23Q(α)= 6141 keV 4
Reference: 2012WA38

References:
  A  173Au α decay (25 MS)  B  173Au α decay (14.0 MS)
  C  112Sn(60Ni,p2nγ) 

General Comments:

Identification: excitation functions for 63Cu bombardments of cadmium, silver, and palladium (1978Ca11); excitation functions for krypton bombardments of niobium and yttrium (1978Sc26).

Levels: band(a) π 11/2[505], α=-1/2 band. See comment on signature partner band.

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

Q-value: ΔQ(β)=200, ΔS(n)=150 (2003Au03).

Q-value: Q(α): from Eα=5995 5, the weighted average of Eα=5993 4 (2005Sc22) and Eα=6005 8 (1999Po09), assuming a g.s. to g.s. transition. Q(α)=6151 8 in 2003Au03 based on the datum from 1999Po09 alone.










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0A C (1/2+) 0.353 s 4 
% p = ?
% α = 45 12
% ε = ?
     
   153 24  BC (11/2-) 0.281 s 4 
% p = ?
% α = 72 7
% ε = ?
     
   610.15 18   C (13/2-)     457.1 2 
   100
(M1)
   153
(11/2-)
   811.20 21   C (15/2-)     201.7 3 
  658.3 3 
    31.5 8 
   100.0 13 
(M1)
(E2)
   610.15
   153
(13/2-)
(11/2-)
  1243.2 3   C (15/2-)     633.1 2 
   100

   610.15
(13/2-)
  1330.98 23   C (17/2-)     519.3 4 
  720.3 2 
   100.0 21 
    63.5 19 
(M1)
(E2)
   811.20
   610.15
(15/2-)
(13/2-)
  1547.0 3   C (17/2-)     937.3 3 
   100

   610.15
(13/2-)
  1572.75 24   C (19/2-)     242.5 4 
  762.4 4 
   <58
   100.0 21 

(E2)
  1330.98
   811.20
(17/2-)
(15/2-)
  1724.64 23   C (19/2-)     152.3 1 
  178.0 3 
  393.3 1 
    58.0 17 
    29.5 12 
   100.0 22 


D
  1572.75
  1547.0
  1330.98
(19/2-)
(17/2-)
(17/2-)
  1803.1 4   C (17/2-)     559.9 2 
   100

  1243.2
(15/2-)
  1803.45 25   C (19/2-)     256.6 4 
  992.5 2 
   100 3 
    35.4 21 


  1547.0
   811.20
(17/2-)
(15/2-)
  1997.8 3   C (21/2-)     273.9 3 
   100

  1724.64
(19/2-)
  2045.0 4   C (21/2-)     242.5 4 
   100

  1803.45
(19/2-)
  2115.69 25   C (21/2-)     542.8 1 
  785.3 2 
   100 10 
    83 6 

(E2)
  1572.75
  1330.98
(19/2-)
(17/2-)
  2221.4 4   C (23/2-)     223.6 2 
   100

  1997.8
(21/2-)
  2261.23 25   C (21/2-)     263.8 2 
  688.4 1 
    24.7 26 
   100 3 


  1997.8
  1572.75
(21/2-)
(19/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  2263.84 25   C (23/2-)     539.2 1 
   100

  1724.64
(19/2-)
  2318.4 3   C (23/2-)     273.9 3 
  317.6 4 
  515.1 3 
  745.4 2 
  <260
   100 3 
    24 9 
    51 3 




  2045.0
  1997.8
  1803.45
  1572.75
(21/2-)
(21/2-)
(19/2-)
(19/2-)
  2406.3 4   C (23/2-)     290.6 3 
  833.5 4 
   <18
   100 5 


  2115.69
  1572.75
(21/2-)
(19/2-)
  2448.9 3   C (25/2-)     130.5 1 
   100

  2318.4
(23/2-)
  2467.7 3   C (23/2-)     206.5 1 
   100

  2261.23
(21/2-)
  2574.4 4   C (25/2-)     310.6 2 
   100

  2263.84
(23/2-)
  2608.4 4   C (27/2-)     159.5 2 
   100

  2448.9
(25/2-)
  2851.4 4   C (25/2-)     383.7 2 
   100

  2467.7
(23/2-)
  2861.3 7   C (29/2-)     252.9 6 
   100

  2608.4
(27/2-)
  3117.9 8   C (31/2-)     256.6 4 
   100

  2861.3
(29/2-)
  3441.5 9   C (33/2-)     323.6 2 
   100

  3117.9
(31/2-)

E(level): From least-squares fit to Eγ, excluding the 317.6γ which fits its placement very poorly. Energies are given assuming E=153 for the h11/2 isomeric state and do not include the 24 keV uncertainty in that energy.

Jπ(level): Based on band structure deduced in (60Ni,92nγ), transition multipolarities and similarity of level scheme to that for 171Ir, except as noted.

M(γ): From 112Sn(60Ni,p2nγ) based on measured (Iγ(158|’)/((Iγ(86|’)+Iγ(94|’)) and assigning Δπ=(no) to intraband transitions.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - π 11/2[505], α=+1/2 band.
   610.15 18  (13/2-)        
  1330.98 23  (17/2-)        
  2115.69 25  (21/2-)     542.8 1 
  785.3 2 
   100 10 
    83 6 

(E2)
  1572.75
  1330.98
(19/2-)
(17/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - π=(-) SIDEBAND 1.
  1547.0 3  (17/2-)        
  1724.64 23  (19/2-)        
  1997.8 3  (21/2-)     273.9 3 
   100

  1724.64
(19/2-)
  2221.4 4  (23/2-)     223.6 2 
   100

  1997.8
(21/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - π=(-) SIDEBAND 2.
  2318.4 3  (23/2-)        
  2448.9 3  (25/2-)        
  2608.4 4  (27/2-)     159.5 2 
   100

  2448.9
(25/2-)
  2861.3 7  (29/2-)     252.9 6 
   100

  2608.4
(27/2-)
  3117.9 8  (31/2-)     256.6 4 
   100

  2861.3
(29/2-)
  3441.5 9  (33/2-)     323.6 2 
   100

  3117.9
(31/2-)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
   610.15 (13/2-)     457.1 2 (M1)0.0910α=0.0910
   811.20 (15/2-)     201.7 3 (M1)0.838α=0.838
(15/2-)     658.3 3 (E2)0.01250α=0.01250
  1330.98 (17/2-)     519.3 4 (M1)0.0651α=0.0651
(17/2-)     720.3 2 (E2)0.01026α=0.01026
  1572.75 (19/2-)     762.4 4 (E2)0.00909α=0.00909
  2115.69 (21/2-)     785.3 2 (E2)0.00854α=0.00854

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(1/2+) 0.353 s 4 
% p = ?
% α = 45 12
% ε = ?
%p: see 1983Al09 and 1984Gr14 for discussions of expected proton decay; S(p) (=-621 24 (2003Au03)) consistent with predictions.
E(level): %p: see 1983Al09 and 1984Gr14 for discussions of expected proton decay; S(p) (=-621 24 (2003Au03)) consistent with predictions.
   610.15(13/2-)   E(level): π 11/2[505], α=+1/2 band.
  1330.98(17/2-)   E(level): π 11/2[505], α=+1/2 band.
  1547.0(17/2-)   E(level): π=(-) SIDEBAND 1.
  1724.64(19/2-)   E(level): π=(-) SIDEBAND 1.
  1997.8(21/2-)   E(level): π=(-) SIDEBAND 1.
  2115.69(21/2-)   E(level): π 11/2[505], α=+1/2 band.
  2221.4(23/2-)   E(level): π=(-) SIDEBAND 1.
  2318.4(23/2-)   E(level): π=(-) SIDEBAND 2.
  2448.9(25/2-)   E(level): π=(-) SIDEBAND 2.
  2608.4(27/2-)   E(level): π=(-) SIDEBAND 2.
  2861.3(29/2-)   E(level): π=(-) SIDEBAND 2.
  3117.9(31/2-)   E(level): π=(-) SIDEBAND 2.
  3441.5(33/2-)   E(level): π=(-) SIDEBAND 2.

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Additional Gamma Comments:

E(level)E(gamma)Comments
  1572.75   242.5E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
  1803.45   256.6E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
  1997.8   273.9E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
  2045.0   242.5E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
  2318.4   273.9E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity
   317.6E(γ): fits placement very poorly; Eγ is >5σ from expected value. Level energy difference is 320.7 3.
  3117.9   256.6E(γ): Multiply placed with undivided intensity
I(γ): Multiply placed with undivided intensity

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