ADOPTED LEVELS, GAMMAS for 175Ir

Author: Jin Wu |  Citation: Nucl. Data Sheets 206, 1 (2025) |  Cutoff date: 29-Oct-2024 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-7686 keV 22S(n)= 10680 keV 17S(p)= 688 keV 16Q(α)= 5430 keV 30
Reference: 2021WA16

References:
  A  179Au α decay  B  92Mo(88Sr,αpγ)
  C  146Nd(35Cl,6N):ISOMER  D  147Sm(32S,p3nγ)

General Comments:

$ Recent study in (88Sr,αpγ) has observed an isomer through a cascade 26.1-45.2 keV transition to the g.s., which is placed below the (1/2-[541]) band observed in (32S,p3nγ). The energies of (1/2-[541]) band members in (32S,p3nγ) were increased 71.3 keV to match the levels in (88Sr,αpγ) in the Adopted dataset.

Q-value: S(2n)=19269 16, S(2p)=4420 30, Q(εp)=2990 30 (2021Wa16)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABCD (1/2+) 8.8 s 5 
% ε = 99.15 28
% α = 0.85 28
     
   0+Y  C  33 s 4       
    26.1 4 AB   (3/2+)      26.1 4 
   100
M1
     0.0
(1/2+)
    52.6 11    D (5/2+)      53S
   100

     0.0
(1/2+)
    71.3 5  B D (5/2-) 6.58 µs 15     45.2 2 
   100
E1
    26.1
(3/2+)
   120.1 8  B D (9/2-)      49S
   100
[E2]
    71.3
(5/2-)
   131.9 4 A  D (1/2+,3/2+)     105.3
  131.9
 
 

M1
    26.1
     0.0
(3/2+)
(1/2+)
   146.0 7 A        119.9
   100

    26.1
(3/2+)
   155.5 4    D (7/2+)     103.0
   100

    52.6
(5/2+)
   203.7 11    D        
   260.3 7 A    (1/2+,3/2+,5/2+)     234.2
   100
M1
    26.1
(3/2+)
   267.6 7  B D (7/2-)     196.3
   100

    71.3
(5/2-)
   281.8 4    D (9/2+)     126.1
  229.1
   100 41 
    33 6 


   155.5
    52.6
(7/2+)
(5/2+)
   348.2 5    D (11/2)     144.5
   100

   203.7

   350.4 5  B D 13/2-     230.3
   100

   120.1
(9/2-)
   426.3 5    D (11/2+)     144.3
  270.9
   100 10 
    94 5 


   281.8
   155.5
(9/2+)
(7/2+)
   493.4 5  B D (11/2-)     225.8
  373.3
   100 6 
    72 7 


   267.6
   120.1
(7/2-)
(9/2-)
   508.9 9    D     160.6
   100

   348.2
(11/2)
   681.9 10    D     173.0
  333.7
   100 19 
  ≈143


   508.9
   348.2

(11/2)
   722.7 10  B D (17/2-)     372.4
   100

   350.4
13/2-
   731.3 7  B D (13/2+)     222.4
  237.9
  380.9
  383.1
     4.9 9 
    30.1 13 
   100 4 
    24.5 26 




   508.9
   493.4
   350.4
   348.2

(11/2-)
13/2-
(11/2)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   838.5 7  B D (15/2-)     345.1
   100

   493.4
(11/2-)
   883.1 9  B D (17/2+)     151.8
  160.4
   100.0 13 
    13.6 9 


   731.3
   722.7
(13/2+)
(17/2-)
  1132.0 10  B D (21/2+)     248.9
   100

   883.1
(17/2+)
  1185.6 11  B D (21/2-)     462.9
   100

   722.7
(17/2-)
  1459.5 11  B D (25/2+)     327.5
   100

  1132.0
(21/2+)
  1700.4 12  B D (25/2-)     514.8
   100

  1185.6
(21/2-)
  1855.4 12  B D (29/2+)     395.9
   100

  1459.5
(25/2+)
  2245.6 13  B D (29/2-)     545.2
   100

  1700.4
(25/2-)
  2312.9 13  B D (33/2+)     457.5
   100

  1855.4
(29/2+)
  2806.3 14    D (33/2-)     560.7
   100

  2245.6
(29/2-)
  2827.1 14    D (37/2+)     514.2
   100

  2312.9
(33/2+)
  3372.5 15    D (37/2-)     566.2
   100

  2806.3
(33/2-)
  3393.5 15    D (41/2+)     566.4
   100

  2827.1
(37/2+)
  3967.5 18    D (41/2-)     595
   100

  3372.5
(37/2-)
  4009.5 16    D (45/2+)     616.0
   100

  3393.5
(41/2+)
  4620.5 21    D (45/2-)     653
   100

  3967.5
(41/2-)
  4673.5 17    D (49/2+)     664.0
   100

  4009.5
(45/2+)
  5385.3 17    D (53/2+)     711.8
   100

  4673.5
(49/2+)
  6146.3 20    D (57/2+)     761
   100

  5385.3
(53/2+)
     0.0+X   D (9/2-)        
    88.9+X 4    D (11/2-)      88.9
   100

     0.0+X
(9/2-)
   263.4+X 4    D (13/2-)     174.5
  263.4
   100.0 25 
    12.0 17 


    88.9+X
     0.0+X
(11/2-)
(9/2-)
   433.3+X 5    D (15/2-)     169.6
  344.5
   100.0 25 
    56 10 


   263.4+X
    88.9+X
(13/2-)
(11/2-)
   622.3+X 5    D (17/2-)     188.9
  359.1
   100 33 
    57.5 31 


   433.3+X
   263.4+X
(15/2-)
(13/2-)
   822.7+X 6    D (19/2-)     200.3
  389.3
   100 7 
   100 7 


   622.3+X
   433.3+X
(17/2-)
(15/2-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  1038.4+X 6    D (21/2-)     215.5
  416.2
   100.0 35 
    91.9 30 


   822.7+X
   622.3+X
(19/2-)
(17/2-)
  1266.5+X 8    D (23/2-)     228.1
  443.8
    96 47 
   100 8 


  1038.4+X
   822.7+X
(21/2-)
(19/2-)
  1508.8+X 9    D (25/2-)     242.3
  470.4
    60 6 
   100.0 34 


  1266.5+X
  1038.4+X
(23/2-)
(21/2-)
  1762.8+X 9    D (27/2-)     254.1
  496.3
    66.1 22 
   100 5 


  1508.8+X
  1266.5+X
(25/2-)
(23/2-)
  2029.6+X 9    D (29/2-)     266.8
  520.9
    65 4 
   100 9 


  1762.8+X
  1508.8+X
(27/2-)
(25/2-)
  2306.8+X 9    D (31/2-)     277.1
  543.9
    60 8 
   100 6 


  2029.6+X
  1762.8+X
(29/2-)
(27/2-)
  2594.3+X 10    D (33/2-)     287.5
  564.7
    61 4 
   100 16 


  2306.8+X
  2029.6+X
(31/2-)
(29/2-)
  2890.5+X 10    D (35/2-)     296.3
  583.8
    48.0 29 
   100 10 


  2594.3+X
  2306.8+X
(33/2-)
(31/2-)
  3194.8+X 10    D (37/2-)     304.3
  600.5
    43 9 
   100 13 


  2890.5+X
  2594.3+X
(35/2-)
(33/2-)
  3507.2+X 11    D (39/2-)     312
  616.7
    52 12 
   100 14 


  3194.8+X
  2890.5+X
(37/2-)
(35/2-)
  3826.0+X 12    D (41/2-)     319
  631
   100 16 
   100 17 


  3507.2+X
  3194.8+X
(39/2-)
(37/2-)
  4154.7+X 12    D (43/2-)     328
  647.5
   100 14 
   100 18 


  3826.0+X
  3507.2+X
(41/2-)
(39/2-)
  4490.0+X 16    D (45/2-)     664?
   100

  3826.0+X
(41/2-)
  4837.7+X 16    D (47/2-)     683?
   100

  4154.7+X
(43/2-)

E(level): From a least-squares fit to Eγ’s assuming ΔE=0.5 keV. The levels with "+x " uncertain energies were from (32S,p3nγ).

Jπ(level): Based on γ-ray angular correlations and rotational band structure. Additional support for assignments to members of the 9/2-[514] rotational band comes from a comparison of gyromagnetic ratios (gK) predicted by the Nilsson model, with experimental values deduced from B(M1)/B(E2) cascade-to-crossover branching ratio intensities (1991Dr06).

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - 1/2-[541] band.
    71.3 5  (5/2-) 6.58 µs 15       
   120.1 8  (9/2-)        
   267.6 7  (7/2-)     196.3
   100

    71.3
(5/2-)
   350.4 5  13/2-     230.3
   100

   120.1
(9/2-)
   493.4 5  (11/2-)     225.8
  373.3
   100 6 
    72 7 


   267.6
   120.1
(7/2-)
(9/2-)
   722.7 10  (17/2-)     372.4
   100

   350.4
13/2-
   838.5 7  (15/2-)     345.1
   100

   493.4
(11/2-)
  1185.6 11  (21/2-)     462.9
   100

   722.7
(17/2-)
  1700.4 12  (25/2-)     514.8
   100

  1185.6
(21/2-)
  2245.6 13  (29/2-)        
  2806.3 14  (33/2-)     560.7
   100

  2245.6
(29/2-)
  3372.5 15  (37/2-)     566.2
   100

  2806.3
(33/2-)
  3967.5 18  (41/2-)     595
   100

  3372.5
(37/2-)
  4620.5 21  (45/2-)     653
   100

  3967.5
(41/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - 1/2+[660] band.
   731.3 7  (13/2+)        
   883.1 9  (17/2+)        
  1132.0 10  (21/2+)     248.9
   100

   883.1
(17/2+)
  1459.5 11  (25/2+)     327.5
   100

  1132.0
(21/2+)
  1855.4 12  (29/2+)     395.9
   100

  1459.5
(25/2+)
  2312.9 13  (33/2+)     457.5
   100

  1855.4
(29/2+)
  2827.1 14  (37/2+)     514.2
   100

  2312.9
(33/2+)
  3393.5 15  (41/2+)     566.4
   100

  2827.1
(37/2+)
  4009.5 16  (45/2+)     616.0
   100

  3393.5
(41/2+)
  4673.5 17  (49/2+)        
  5385.3 17  (53/2+)     711.8
   100

  4673.5
(49/2+)
  6146.3 20  (57/2+)     761
   100

  5385.3
(53/2+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - 5/2+[402] band.
    52.6 11  (5/2+)        
   155.5 4  (7/2+)        
   281.8 4  (9/2+)     126.1
  229.1
   100 41 
    33 6 


   155.5
    52.6
(7/2+)
(5/2+)
   426.3 5  (11/2+)     144.3
  270.9
   100 10 
    94 5 


   281.8
   155.5
(9/2+)
(7/2+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - 9/2-[514] band.
     0.0+X (9/2-)        
    88.9+X 4  (11/2-)        
   263.4+X 4  (13/2-)     174.5
  263.4
   100.0 25 
    12.0 17 


    88.9+X
     0.0+X
(11/2-)
(9/2-)
   433.3+X 5  (15/2-)     169.6
  344.5
   100.0 25 
    56 10 


   263.4+X
    88.9+X
(13/2-)
(11/2-)
   622.3+X 5  (17/2-)     188.9
  359.1
   100 33 
    57.5 31 


   433.3+X
   263.4+X
(15/2-)
(13/2-)
   822.7+X 6  (19/2-)     200.3
  389.3
   100 7 
   100 7 


   622.3+X
   433.3+X
(17/2-)
(15/2-)
  1038.4+X 6  (21/2-)     215.5
  416.2
   100.0 35 
    91.9 30 


   822.7+X
   622.3+X
(19/2-)
(17/2-)
  1266.5+X 8  (23/2-)     228.1
  443.8
    96 47 
   100 8 


  1038.4+X
   822.7+X
(21/2-)
(19/2-)
  1508.8+X 9  (25/2-)     242.3
  470.4
    60 6 
   100.0 34 


  1266.5+X
  1038.4+X
(23/2-)
(21/2-)
  1762.8+X 9  (27/2-)        
  2029.6+X 9  (29/2-)     266.8
  520.9
    65 4 
   100 9 


  1762.8+X
  1508.8+X
(27/2-)
(25/2-)
  2306.8+X 9  (31/2-)     277.1
  543.9
    60 8 
   100 6 


  2029.6+X
  1762.8+X
(29/2-)
(27/2-)
  2594.3+X 10  (33/2-)     287.5
  564.7
    61 4 
   100 16 


  2306.8+X
  2029.6+X
(31/2-)
(29/2-)
  2890.5+X 10  (35/2-)     296.3
  583.8
    48.0 29 
   100 10 


  2594.3+X
  2306.8+X
(33/2-)
(31/2-)
  3194.8+X 10  (37/2-)     304.3
  600.5
    43 9 
   100 13 


  2890.5+X
  2594.3+X
(35/2-)
(33/2-)
  3507.2+X 11  (39/2-)     312
  616.7
    52 12 
   100 14 


  3194.8+X
  2890.5+X
(37/2-)
(35/2-)
  3826.0+X 12  (41/2-)     319
  631
   100 16 
   100 17 


  3507.2+X
  3194.8+X
(39/2-)
(37/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
  4154.7+X 12  (43/2-)     328
  647.5
   100 14 
   100 18 


  3826.0+X
  3507.2+X
(41/2-)
(39/2-)
  4490.0+X 16  (45/2-)     664?
   100

  3826.0+X
(41/2-)
  4837.7+X 16  (47/2-)     683?
   100

  4154.7+X
(43/2-)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
    26.1 (3/2+)      26.1 4 M155.5α=55.5 27, α(L)=42.8 21, α(M)=9.9 5, α(N)=2.43 12, α(O)=0.429 21, α(P)=0.0323 16
    71.3 (5/2-) 6.58 µs 15     45.2 2 E10.676B(E1)(W.u.)=2.12E-7 6, α=0.676 13, α(L)=0.520 10, α(M)=0.1217 23, α(N)=0.0290 5, α(O)=0.00454 8, α(P)=0.0001725 30
   120.1 (9/2-)      49[E2]117.7α=117.7 16, α(L)=88.6 12, α(M)=22.72 32, α(N)=5.48 8, α(O)=0.829 12, α(P)=0.000808 11
   131.9 (1/2+,3/2+)     131.9M12.77α=2.77 4, α(K)=2.288 32, α(L)=0.375 5, α(M)=0.0864 12, α(N)=0.02123 30, α(O)=0.00376 5, α(P)=0.000283 4
   260.3 (1/2+,3/2+,5/2+)     234.2M10.554α=0.554 8, α(K)=0.458 6, α(L)=0.0742 10, α(M)=0.01709 24, α(N)=0.00420 6, α(O)=0.000744 10, α(P)=5.62×10-5 8

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    52.6(5/2+)   E(level): 5/2+[402] band.
    71.3(5/2-) 6.58 µs 15  E(level): 1/2-[541] band.
   120.1(9/2-)   E(level): 1/2-[541] band.
   155.5(7/2+)   E(level): 5/2+[402] band.
   267.6(7/2-)   E(level): 1/2-[541] band.
   281.8(9/2+)   E(level): 5/2+[402] band.
   350.413/2-   E(level): 1/2-[541] band.
   426.3(11/2+)   E(level): 5/2+[402] band.
   493.4(11/2-)   E(level): 1/2-[541] band.
   722.7(17/2-)   E(level): 1/2-[541] band.
   731.3(13/2+)   E(level): 1/2+[660] band.
   838.5(15/2-)   E(level): 1/2-[541] band.
   883.1(17/2+)   E(level): 1/2+[660] band.
  1132.0(21/2+)   E(level): 1/2+[660] band.
  1185.6(21/2-)   E(level): 1/2-[541] band.
  1459.5(25/2+)   E(level): 1/2+[660] band.
  1700.4(25/2-)   E(level): 1/2-[541] band.
  1855.4(29/2+)   E(level): 1/2+[660] band.
  2245.6(29/2-)   E(level): 1/2-[541] band.
  2312.9(33/2+)   E(level): 1/2+[660] band.
  2806.3(33/2-)   E(level): 1/2-[541] band.
  2827.1(37/2+)   E(level): 1/2+[660] band.
  3372.5(37/2-)   E(level): 1/2-[541] band.
  3393.5(41/2+)   E(level): 1/2+[660] band.
  3967.5(41/2-)   E(level): 1/2-[541] band.
E(level)Jπ(level)T1/2(level)Comments
  4009.5(45/2+)   E(level): 1/2+[660] band.
  4620.5(45/2-)   E(level): 1/2-[541] band.
  4673.5(49/2+)   E(level): 1/2+[660] band.
  5385.3(53/2+)   E(level): 1/2+[660] band.
  6146.3(57/2+)   E(level): 1/2+[660] band.
     0.0+X(9/2-)   E(level): 9/2-[514] band.
    88.9+X(11/2-)   E(level): 9/2-[514] band.
   263.4+X(13/2-)   E(level): 9/2-[514] band.
   433.3+X(15/2-)   E(level): 9/2-[514] band.
   622.3+X(17/2-)   E(level): 9/2-[514] band.
   822.7+X(19/2-)   E(level): 9/2-[514] band.
  1038.4+X(21/2-)   E(level): 9/2-[514] band.
  1266.5+X(23/2-)   E(level): 9/2-[514] band.
  1508.8+X(25/2-)   E(level): 9/2-[514] band.
  1762.8+X(27/2-)   E(level): 9/2-[514] band.
  2029.6+X(29/2-)   E(level): 9/2-[514] band.
  2306.8+X(31/2-)   E(level): 9/2-[514] band.
  2594.3+X(33/2-)   E(level): 9/2-[514] band.
  2890.5+X(35/2-)   E(level): 9/2-[514] band.
  3194.8+X(37/2-)   E(level): 9/2-[514] band.
  3507.2+X(39/2-)   E(level): 9/2-[514] band.
  3826.0+X(41/2-)   E(level): 9/2-[514] band.
  4154.7+X(43/2-)   E(level): 9/2-[514] band.
  4490.0+X(45/2-)   E(level): 9/2-[514] band.
  4837.7+X(47/2-)   E(level): 9/2-[514] band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    26.1    26.1E(γ): from (88Sr,αpγ). Other: 26.1 4 from (32S,p3nγ)
I(γ): from (32S,p3nγ)
M(γ): from ce in (88Sr,αpγ)
    52.6    53E(γ): from (32S,p3nγ)
    71.3    45.2E(γ): from (88Sr,αpγ). Other: 45.2 2 from (32S,p3nγ)
I(γ): from (32S,p3nγ)
M(γ): from ce in (88Sr,αpγ)
   120.1    49E(γ): from (32S,p3nγ)
   131.9   105.3E(γ): from 179Au α decay
   131.9E(γ): from 179Au α decay
M(γ): from ce in 179Au α decay
   146.0   119.9E(γ): from 179Au α decay
   260.3   234.2E(γ): from 179Au α decay
M(γ): from ce in 179Au α decay

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